CN109149346A - A kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation - Google Patents
A kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation Download PDFInfo
- Publication number
- CN109149346A CN109149346A CN201811007026.3A CN201811007026A CN109149346A CN 109149346 A CN109149346 A CN 109149346A CN 201811007026 A CN201811007026 A CN 201811007026A CN 109149346 A CN109149346 A CN 109149346A
- Authority
- CN
- China
- Prior art keywords
- mirror
- mgo
- reflection mirror
- tuned reflection
- tuned
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
- H01S3/108—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering
- H01S3/1083—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity using non-linear optical devices, e.g. exhibiting Brillouin or Raman scattering using parametric generation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/10061—Polarization control
Abstract
The present disclosure discloses a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, more optical parametric oscillators include: laser diode pumping source, energy-transmission optic fibre, coupled lens group, total reflective mirror, laser gain medium, condenser lens, the first tuned reflection mirror, MgO:APLN crystal, the second tuned reflection mirror, MgO:PPLN polarization state modulator, driving power, third tuned reflection mirror and outgoing mirror.The disclosure passes through in the intracavitary introducing resonance parameter polarization state modulator of more optical parametric oscillators, realize effective control to intracavitary resonance parameter light polarization direction, and then change the resonance parameteric light energy proportioning for participating in frequency transformation, achieve the purpose that Energy Reversal is inhibited to change.
Description
Technical field
This disclosure relates to solid state laser field more particularly to a kind of more optical parameters realized Energy Reversal and change intracavitary regulation
Oscillator.
Background technique
Recently as frontier science and technology such as optical difference frequency Terahertz, the guidance of military multi-wave band laser, multi-channel optical fiber communications
The demand of the development in field, multi-wavelength tunable laser is more urgent, this makes this emerging direction of more optical parametric oscillators
Industry concern is gradually obtained, and is widely studied.
The optical parametric oscillator for mixing magnesia lithium niobate (MgO:APLN) crystal based on acyclic polarized structure can pass through
Monolithic frequency-changer crystal compensates multiple phase mismatch, and then achievees the purpose that more optical parametric oscillations, is current more optical parametric oscillators
Most reasonable technological approaches.However due to more wave energy coupling process complicated in monolithic crystal, Energy Reversal changes problem very
Seriously, the transfer efficiency and stability of output multiwavelength laser, the problem especially in terms of the drive manner of inner cavity are significantly impacted
It becomes apparent, for details, reference can be made to document, " more optical parametric oscillator experimental studies and its inverse transformation process based on MgO:APLN are drilled
Change and analyzes, Acta Physica Sinica, 2015,64 (4), 044203 ".
For the inverse conversion problem of above-mentioned more optical parametric oscillators, can be reached by increasing intracavitary resonance parameter light loss
Effectively inhibit the purpose of inverse conversion, Traditional solutions are usually to shorten frequency-changer crystal length, optimal cavity structure, non-colinear
Phase matched and reasonable set outgoing mirror resonance parameter light transmission rate etc..But these methods are passive mode, once parameter
After determination, just it can not change or correct in more optical parametric oscillator operation process, and with fundamental frequency light injecting power density
Step up, the Optimal Parameters that corresponding inverse conversion also can change therewith, and set obviously can not entirely reverse transformation
Change and realizes Dynamic Matching in range.
Summary of the invention
Present disclose provides a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, by more optical parameters
Resonance parameter polarization state modulator is introduced in oscillator chamber, realizes effective control to intracavitary resonance parameter light polarization direction,
And then change the resonance parameteric light energy proportioning for participating in frequency transformation, achieve the purpose that Energy Reversal is inhibited to change.
Present disclose provides a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, more optical parameter vibrations
Swinging device includes: laser diode pumping source, energy-transmission optic fibre, coupled lens group, total reflective mirror, laser gain medium, condenser lens,
One tuned reflection mirror, MgO:APLN crystal, the second tuned reflection mirror, MgO:PPLN polarization state modulator, driving power, third are humorous
Shake reflecting mirror and outgoing mirror, in which:
The laser diode pumping source is connect with energy-transmission optic fibre；
The coupled lens group and laser gain medium are placed sequentially in the optical path rear of the energy-transmission optic fibre；
The total reflective mirror is placed between coupled lens group and laser gain medium；
The condenser lens, the first tuned reflection mirror, the second tuned reflection mirror and outgoing mirror are placed sequentially in the laser
The optical path rear of gain media；
The third tuned reflection mirror is placed on optical path side, with the first tuned reflection mirror and the second tuned reflection mirror
Annular optical parametric osoillator is formed, the MgO:APLN crystal and MgO:PPLN polarization state modulator are located at the optical parametric osoillator
In；
The MgO:APLN crystal be placed on condenser lens the first tuned reflection mirror and the second tuned reflection mirror it
Between focusing focus at；
The MgO:PPLN polarization state modulator is one or more, is placed on the first tuned reflection mirror, second humorous
It shakes in the optical path that reflecting mirror and third tuned reflection mirror are formed；
The quantity of the driving power is corresponding with the quantity of the MgO:PPLN polarization state modulator, respectively with corresponding MgO:
The two sides electrode slice of PPLN polarization state modulator connects, for providing driving power output；
The total reflective mirror and outgoing mirror constitute fundamental frequency optical cavity, the laser gain medium, condenser lens, the first resonance
Reflecting mirror, MgO:APLN crystal and the second tuned reflection mirror are located in the fundamental frequency optical cavity.
The disclosure additionally provides a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, more optical parameters
Oscillator include: laser diode pumping source, energy-transmission optic fibre, coupled lens group, total reflective mirror, laser gain medium, condenser lens,
First tuned reflection mirror, MgO:APLN crystal, the second tuned reflection mirror, the first MgO:PPLN polarization state modulator, the 2nd MgO:
PPLN polarization state modulator, the first driving power, the second driving power, third tuned reflection mirror and outgoing mirror, in which:
The laser diode pumping source is connect with energy-transmission optic fibre；
The coupled lens group and laser gain medium are placed sequentially in the optical path rear of the energy-transmission optic fibre；
The total reflective mirror is placed between coupled lens group and laser gain medium；
The condenser lens, the first tuned reflection mirror, the second tuned reflection mirror and outgoing mirror are placed sequentially in the laser
The optical path rear of gain media；
The third tuned reflection mirror is placed on optical path side, with the first tuned reflection mirror and the second tuned reflection mirror
Annular optical parametric osoillator is formed, the MgO:APLN crystal, the first MgO:PPLN polarization state modulator and the 2nd MgO:PPLN are inclined
Polarization state modulator is located in the optical parametric osoillator；
The MgO:APLN crystal be placed on condenser lens the first tuned reflection mirror and the second tuned reflection mirror it
Between focusing focus at；
The first MgO:PPLN polarization state modulator is placed between the second tuned reflection mirror and third tuned reflection mirror；
The 2nd MgO:PPLN polarization state modulator is placed between the first tuned reflection mirror and third tuned reflection mirror；
First driving power and the second driving power respectively with the first MgO:PPLN polarization state modulator and second
The two sides electrode slice of MgO:PPLN polarization state modulator connects, for providing driving power output；
The total reflective mirror and outgoing mirror constitute fundamental frequency optical cavity, the laser gain medium, condenser lens, the first resonance
Reflecting mirror, MgO:APLN crystal and the second tuned reflection mirror are located in the fundamental frequency optical cavity.
Optionally, the total reflective mirror is average mirror, is coated with pump light anti-reflection film and fundamental frequency light high-reflecting film.
Optionally, the laser gain medium plates pump light and fundamental frequency light anti-reflection film, the other end close to one end of total reflective mirror
Coating basic frequency light anti-reflection film.
Optionally, the condenser lens is biconvex mirror, two-sided to be coated with pump light anti-reflection film.
Optionally, the first tuned reflection mirror is flat-flat mirror, two-sided to be coated with fundamental frequency light anti-reflection film, close to MgO:
APLN crystal side single side is coated with 30 ° of high-reflecting films of resonance parameteric light.
Optionally, the MgO:APLN crystal both ends of the surface are coated with fundamental frequency light, signal light and ideler frequency light anti-reflection film.
Optionally, the second tuned reflection mirror is flat-flat mirror, two-sided to be coated with fundamental frequency light and output parameter light is anti-reflection
Film is coated with 30 ° of high-reflecting films of resonance parameteric light close to MgO:APLN crystal side single side.
Optionally, the third tuned reflection mirror is flat-flat mirror, is coated with resonance ginseng close to MgO:APLN crystal side single side
Measure 30 ° of high-reflecting films of light.
Optionally, the outgoing mirror is plano-concave mirror, is coated with fundamental frequency light high-reflecting film and output parameter light high transmittance film.
The beneficial effect of technical solution provided by the present disclosure is: the disclosure is humorous in the intracavitary introducing of the more optical parametric oscillators in inner cavity
Shake parameter polarization state modulator, designs niobic acid lithium material polarization knot according to Solc filtering principle combination parameteric light resonance wavelength
Structure, by forming resonance parameter polarization state modulator, it can be achieved that any to resonance wavelength laser polarization state to its on-load voltage
The deflection of angle controls, since the deflection angle directly determines the resonance parameteric light e light during participating in frequency conversion energy coupling
Light intensity magnitude, therefore the energy proportion that resonance parameteric light participates in frequency transformation can be changed by adjusting on-load voltage value, thus
On-load voltage appropriate is chosen according to the actual power variation of inverse conversion reflection, inhibits inverse conversion, remains high efficiency
Output.Inhibit inverse conversion technological approaches, the disclosure compared to optimal cavity structure, replacement outgoing mirror resonance parameter light transmission rate etc.
The output power situation of change that can be reflected at any time according to inverse conversion carries out active control to laser, and control precision is high, can
Control property is strong, is more conducive to practical application.
Detailed description of the invention
Fig. 1 is to realize that Energy Reversal changes more optical parametric oscillators of intracavitary regulation according to a kind of of one embodiment of the disclosure
Structural schematic diagram；
Fig. 2 is the operation principle schematic diagram according to the MgO:PPLN polarization state modulator of one embodiment of the disclosure；
Fig. 3 is according to the resonance parameteric light e of one embodiment of the disclosure to the relationship between resonance energy accounting and on-load voltage
Schematic diagram.
In attached drawing, list of parts representated by each appended drawing reference is as follows: 1. laser diode pumping source, 2. energy-transmission optic fibre
3. 4. total reflective mirror of coupled lens group, 5. laser gain medium, 6. condenser lens, 7. first tuned reflection mirror 8.MgO:APLN is brilliant
The 2nd MgO:PPLN polarization state modulator of the oneth MgO:PPLN polarization state modulator 11. of 9. second tuned reflection mirror 10. of body
12. 14. third tuned reflection mirror of the first 13. second driving power of driving power, 15. outgoing mirror.
Specific embodiment
Hereinafter, the illustrative embodiments of the disclosure will be described in detail with reference to the attached drawings, so that those skilled in the art can
Easily realize them.In addition, for the sake of clarity, the portion unrelated with description illustrative embodiments is omitted in the accompanying drawings
Point.
In the disclosure, it should be appreciated that the term of " comprising " or " having " etc. is intended to refer to disclosed in this specification
Feature, number, step, behavior, the presence of component, part or combinations thereof, and be not intended to exclude other one or more features,
A possibility that number, step, behavior, component, part or combinations thereof exist or are added.
It also should be noted that in the absence of conflict, the feature in embodiment and embodiment in the disclosure
It can be combined with each other.The disclosure is described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
The embodiment of the present disclosure provides a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, more beche-de-mers without spike
Amount oscillator includes: laser diode pumping source, energy-transmission optic fibre, coupled lens group, total reflective mirror, laser gain medium, focuses thoroughly
Mirror, the first tuned reflection mirror, MgO:APLN crystal, the second tuned reflection mirror, MgO:PPLN polarization state modulator, driving power,
Third tuned reflection mirror and outgoing mirror, in which:
The laser diode pumping source is connect with energy-transmission optic fibre；
The coupled lens group and laser gain medium are placed sequentially in the optical path rear of the energy-transmission optic fibre；
The total reflective mirror is placed between coupled lens group and laser gain medium；
The condenser lens, the first tuned reflection mirror, the second tuned reflection mirror and outgoing mirror are placed sequentially in the laser
The optical path rear of gain media；
The third tuned reflection mirror is placed on optical path side, with the first tuned reflection mirror and the second tuned reflection mirror
Annular optical parametric osoillator is formed, the MgO:APLN crystal and MgO:PPLN polarization state modulator are located at the optical parametric osoillator
In；
The MgO:APLN crystal be placed on condenser lens the first tuned reflection mirror and the second tuned reflection mirror it
Between focusing focus at；
The MgO:PPLN polarization state modulator is one or more, is placed on the first tuned reflection mirror, second humorous
It shakes in the optical path that reflecting mirror and third tuned reflection mirror are formed；
The quantity of the driving power is corresponding with the quantity of the MgO:PPLN polarization state modulator, respectively with corresponding MgO:
The two sides electrode slice of PPLN polarization state modulator connects, for providing driving power output；
The total reflective mirror and outgoing mirror constitute fundamental frequency optical cavity, the laser gain medium, condenser lens, the first resonance
Reflecting mirror, MgO:APLN crystal and the second tuned reflection mirror are located in the fundamental frequency optical cavity.
At work, laser diode pumping source launch energy is absorbed by laser gain medium to be led more optical parametric oscillators
The long pump light of spike, is exported by energy-transmission optic fibre, and coupled lens group focuses on inside laser gain medium, and laser gain is situated between
Matter absorbs pump light and forms population inversion, forms fundamental frequency light vibration under the constant feedback effect in the fundamental frequency optical cavity
It swings, fundamental frequency light line focus lens are further formed the focal pumping to MgO:APLN crystal, focus the multi-wavelength resonance ginseng of generation
Amount light feeds back to form persistent oscillation by optical parametric osoillator, according to optical parametric oscillation law of conservation of energy, with each resonance parameter
Optical wavelength corresponds the synchronous different wave length parameteric light generated and exports through the outgoing mirror.According to the quasi- phase polarization state of e+e → e
Matching condition and resonance parameter optical wavelength, by the selection of MgO:PPLN polarization cycle and domain number, so that MgO:PPLN
Polarization state modulator can realize the angle control of different wave length resonance parameter light polarization direction by on-load voltage respectively,
In controllable wavelength quantity it is corresponding with the quantity of MgO:PPLN polarization state modulator, due to the polarization direction hair of resonance parameteric light
After raw angular deflection, more optical parametric oscillation process are participated in the portion of energy of polarization in e only in vector project at this time
Energy conversion, dump energy are converted into loss.
The disclosure is described in detail by taking twin wavelength laser output as an example below.
Fig. 1 is according to the structural schematic diagram of more optical parametric oscillators of one embodiment of the disclosure, as shown in Figure 1, described more
Optical parametric oscillator includes: laser diode pumping source 1, energy-transmission optic fibre 2, coupled lens group 3, total reflective mirror 4, laser gain medium
5, condenser lens 6, the first tuned reflection mirror 7, MgO:APLN crystal 8, the second tuned reflection mirror 9, the first MgO:PPLN polarization state
Modulator 10, the 2nd MgO:PPLN polarization state modulator 11, the first driving power 12, the second driving power 13, third resonance are anti-
Penetrate mirror 14 and outgoing mirror 15, in which:
The laser diode pumping source 1 is connect with energy-transmission optic fibre 2；
The coupled lens group 3 and laser gain medium 5 are placed sequentially in the optical path rear of the energy-transmission optic fibre 2；
The total reflective mirror 4 is placed between coupled lens group 3 and laser gain medium 5；
The condenser lens 6, the first tuned reflection mirror 7, the second tuned reflection mirror 9 and outgoing mirror 15 are placed sequentially in described
The optical path rear of laser gain medium 5；
The third tuned reflection mirror 14 is placed on optical path side, anti-with the first tuned reflection mirror 7 and the second resonance
It penetrates mirror 9 and forms annular optical parametric osoillator, the MgO:APLN crystal, the first MgO:PPLN polarization state modulator and the 2nd MgO:
PPLN polarization state modulator is located in the optical parametric osoillator；
MgO:APLN crystal 8 be placed on condenser lens 6 the first tuned reflection mirror 7 and the second tuned reflection mirror 9 it
Between focusing focus at；
The first MgO:PPLN polarization state modulator 10 is placed on the second tuned reflection mirror 9 and third tuned reflection mirror 14
Between；
The 2nd MgO:PPLN polarization state modulator 11 is placed on the first tuned reflection mirror 7 and third tuned reflection mirror 14
Between；
First driving power 12 and the second driving power 13 respectively with the first MgO:PPLN polarization state modulator 10 and
The two sides electrode slice of 2nd MgO:PPLN polarization state modulator 11 connects, for providing driving power output；
The total reflective mirror and outgoing mirror constitute fundamental frequency optical cavity, the laser gain medium, condenser lens, the first resonance
Reflecting mirror, MgO:APLN crystal and the second tuned reflection mirror are located in the fundamental frequency optical cavity.
In one embodiment of the disclosure, the total reflective mirror 4 is average mirror, is coated with pump light anti-reflection film and fundamental frequency light is high anti-
Film.
In one embodiment of the disclosure, the laser gain medium 5 plates pump light and fundamental frequency light close to one end of total reflective mirror 4
Anti-reflection film, other end coating basic frequency light anti-reflection film.
In one embodiment of the disclosure, the condenser lens 6 is biconvex mirror, two-sided to be coated with pump light anti-reflection film.
In one embodiment of the disclosure, the first tuned reflection mirror 7 is flat-flat mirror, and two-sided to be coated with fundamental frequency light anti-reflection
Film is coated with 30 ° of high-reflecting films of resonance parameteric light close to 8 side single side of MgO:APLN crystal.
In one embodiment of the disclosure, 8 both ends of the surface of MgO:APLN crystal are coated with fundamental frequency light, signal light and ideler frequency light
Anti-reflection film.
In one embodiment of the disclosure, the second tuned reflection mirror 9 is flat-flat mirror, the two-sided fundamental frequency light and defeated of being coated with
Parameteric light anti-reflection film out is coated with 30 ° of high-reflecting films of resonance parameteric light close to 8 side single side of MgO:APLN crystal.It is real in the disclosure one
It applies in example, the third tuned reflection mirror 14 is flat-flat mirror, is coated with resonance parameteric light close to 8 side single side of MgO:APLN crystal
30 ° of high-reflecting films.
In one embodiment of the disclosure, the outgoing mirror 15 is plano-concave mirror, is coated with fundamental frequency light high-reflecting film and output parameter light
High transmittance film.
In one embodiment of the disclosure, the first MgO:PPLN polarization state modulator 10 and the 2nd MgO:PPLN polarization state
Modulator 11 is made of the MgO:PPLN polarized crystal that left and right sides surface is fixed with plane electrode piece, and crystal both ends of the surface are plated
There are resonance parameteric light anti-reflection film, polarization cycle A=2d, in which:
M=1,2,3...... be order, and value is depending on machining accuracy, λ0For corresponding resonance
Parameter optical wavelength, noAnd neRespectively correspond to resonance parameteric light o light and e optical index.
In one embodiment of the disclosure, the driving power on-load voltage value UyIt is deflected with corresponding resonance parameter polarization state
Relationship between angle, θ meets:
Wherein, WyFor the interelectrode distance of crystal both side surface, γ51For crystal electro-optic coefficient, N is polarization domain number.
Based on the structure of above-mentioned more optical parametric oscillators, more optical parametric oscillators at work, laser diode
1 launch energy of Pu source is absorbed the pump light of peak wavelength by laser gain medium 5, is exported by energy-transmission optic fibre 2, coupled lens group
3 focus on inside laser gain medium 5, and laser gain medium 5 absorbs pump light and forms population inversion, humorous in the fundamental frequency light
Fundamental frequency light generation is formed under the constant feedback effect for shaking intracavitary, the fundamental frequency light line focus formed in the fundamental frequency optical cavity is saturating
Mirror 6 is further formed the focal pumping to MgO:APLN crystal 8, and the multi-wavelength resonance parameteric light for focusing generation passes through parametric oscillation
Chamber feeds back to form persistent oscillation, according to optical parametric oscillation law of conservation of energy, corresponds with each resonance parameter optical wavelength same
The different wave length parameteric light that step generates is exported through the outgoing mirror 15.According to the quasi- phase polarization state matching condition of e+e → e and resonance
Parameter optical wavelength, by the selection of MgO:PPLN polarization cycle and domain number, so that the first MgO:PPLN polarization state is modulated
Device 10 and the 2nd MgO:PPLN polarization state modulator 11 can be realized respectively and be joined to two different wave length resonance by on-load voltage
The angle control of light polarization direction is measured, after angular deflection occurs due to the polarization direction of resonance parameteric light, only vector is thrown at this time
Participate in the energy conversion of more optical parametric oscillation process in shadow to the portion of energy of polarization in e, dump energy is converted into damage
Consumption.
Below to obtain 1.57 μm and 3.84 μm of dual wavelength parameter light outputs based on the more optical parametric oscillations of MgO:APLN crystal,
Regulating and controlling corresponding 1.47 μm and the intracavitary energy loss of 3.3 μm of resonance parameteric lights and then reaching effectively inhibits Energy Reversal to be changed to mesh
Scheme for the disclosure is described in detail.
It is mentioned above, more optical parametric oscillators include laser diode pumping source, energy-transmission optic fibre, coupled lens group,
Total reflective mirror, laser gain medium, condenser lens, the first tuned reflection mirror, MgO:APLN crystal, the second tuned reflection mirror, first
MgO:PPLN polarization state modulator, the 2nd MgO:PPLN polarization state modulator, the first driving power, the second driving power, third
Tuned reflection mirror and outgoing mirror.
Wherein, laser diode pumping source emission center wavelength is the laser of 808nm, through 400 μm of core diameter, numerical aperture
0.22 energy-transmission optic fibre realizes laser output.
Wherein, laser gain medium uses Nd:YVO4Crystal is cut, size along a axis are as follows: and thickness × width x length=3mm ×
3mm × 16mm, Nd3+Ion doping concentration is 0.25%, and two end faces are coated with 808nm and 1064nm anti-reflection film.
Wherein, MgO:APLN crystalline size are as follows: thickness × width x length=1mm × 6mm × 50mm, MgO doping concentration are set in
5%, two end faces are coated with 1.064 μm/1.4 μm~1.7 μm/3.3~4.2 μm polychrome anti-reflection films respectively, and polarization structure is non-week
Phase double reciprocal lattice vectors, two phase misalignment dosages of corresponding compensation are respectively 0.2041 μm-1With 0.2135 μm-1, the corresponding signal generated
Light is respectively 1.57 μm and 1.47 μm, and the corresponding ideler frequency light generated is respectively 3.3 μm and 3.84 μm.
Wherein, total reflective mirror is average mirror, is coated with 808nm pump light anti-reflection film and 1064nm fundamental frequency light high-reflecting film.
Wherein, condenser lens is planoconvex lens, is coated with 1064nm fundamental frequency light anti-reflection film, focal length 150mm.
Wherein, the first tuned reflection mirror is average mirror, two-sided to be coated with 1064nm fundamental frequency light anti-reflection film, brilliant close to MgO:APLN
Body side single side is coated with 1.4 μm~1.5 μm, 3.1~3.4 μm of resonance parameteric lights, 30 ° of high-reflecting films.
Wherein, the second tuned reflection mirror is average mirror, it is two-sided be coated with 1064nm fundamental frequency light and 1.5 μm~1.7 μm, 3.7~
4.2 μm of output parameter light anti-reflection films are coated with 1.4 μm~1.5 μm, 3.1~3.4 μm of resonance close to MgO:APLN crystal side single side
30 ° of high-reflecting films of parameteric light.
Wherein, third tuned reflection mirror is average mirror, is coated with 1.4 μm~1.5 μ close to 8 side single side of MgO:APLN crystal
M, 3.1~3.4 μm of resonance parameteric light high-reflecting films.
Wherein, the first MgO:PPLN polarization state modulator is fixed with the MgO:PPLN of plane electrode piece by left and right sides surface
Polarized crystal is constituted, and two sides electrode slice is connected with the first driving power, MgO:PPLN polarized crystal size are as follows: thickness × width x length
=1mm × 5mm × 20mm, MgO doping concentration are set in 5%, and two end faces are coated with 1.4 μm~1.5 μm, 3.1~3.4 μm respectively
Resonance parameteric light anti-reflection film, polarization cycle are 20 μm, corresponding to realize 1.47 μm of resonance parameter polarization state modulation.
Wherein, the 2nd MgO:PPLN polarization state modulator is fixed with the MgO:PPLN of plane electrode piece by left and right sides surface
Polarized crystal is constituted, and two sides electrode slice is connected with the second driving power, MgO:PPLN polarized crystal size are as follows: thickness × width x length
=1mm × 5mm × 40mm, MgO doping concentration are set in 5%, and two end faces are coated with 1.4 μm~1.5 μm, 3.1~3.4 μm respectively
Resonance parameteric light anti-reflection film, polarization cycle are 52.2 μm, corresponding to realize 3.3 μm of resonance parameter polarization state modulation.
Wherein, outgoing mirror is the plano-concave mirror that radius of curvature is 200mm, be coated with 1064nm fundamental frequency light high-reflecting film and 1.5 μm~
1.7 μm, 3.7~4.2 μm of output parameter light high transmittance films.
According to above embodiment, laser diode pumping source issues pump light after energy-transmission optic fibre exports, coupled
Microscope group is formed to laser gain medium Nd:YVO4The focal pumping of 1: 1.5 hot spot ratio of crystal, spot diameter is 600 μ after focusing
M, laser gain medium Nd:YVO4Absorption of crystal pump light generates population inversion, constitutes in total reflective mirror and outgoing mirror
Generation wavelength is the fundamental frequency light of 1064nm under the feedback effect of 1064nm fundamental frequency optical cavity, and the fundamental frequency light of 1064nm is through over-focusing
Lens focus is in MgO:APLN crystal, and 1.47 μm of generation and 3.3 μm of resonance parameteric lights are in the first tuned reflection mirror, second humorous
Shake and form oscillation under the resonance parameter light generation chamber positive feedback effect that reflecting mirror and third tuned reflection mirror are constituted, with 1.47 μm and
3.3 μm of corresponding synchronous 1.57 μm generated of resonance parameteric light and 3.84 μm of parameteric lights are exported through outgoing mirror.Pass through the first driving electricity
Source and the second driving power first MgO:PPLN polarization state modulator and twoth MgO:PPLN intracavitary to resonance parameter light generation
Polarization state modulator distinguishes on-load voltage, can be realized to 1.47 μm and 3.3 μm two wave resonance parameter light polarization directions
Deflection angle control, as shown in Fig. 2, θ indicates resonance parameter light polarization direction deflection angle, and then passes through polarization direction in Fig. 2
Angle change is counted to polarization light energy accounting according to the on-load voltage value of 0~900V to control the e of participation frequency conversion process
Calculation obtains the 1.47 μm and 3.3 μm of resonance parameteric light e corresponding relationships to resonance energy accounting and on-load voltage value, as shown in Figure 3.
To sum up, the embodiment of the present disclosure provides a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, leads to
It crosses in the intracavitary resonance parameter polarization state modulator for introducing load electric field of more optical parametric oscillators, the reality reflected according to inverse conversion
Border changed power chooses electric field on-load voltage appropriate, by the resonance parameter luminous energy for participating in frequency transformation in on-load voltage control chamber
Amount ratio, and then inhibit inverse conversion.The embodiment of the present disclosure can change more optical parametric oscillator Energy Reversals process realization
Active control, and precision height is controlled, controllability is strong, compared to the passive suppressing method of tradition, is more conducive to practical application.
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects
Describe in detail it is bright, it is all it should be understood that be not limited to the disclosure the foregoing is merely the specific embodiment of the disclosure
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (10)
1. a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, which is characterized in that more optical parametric oscillations
Device includes: laser diode pumping source, energy-transmission optic fibre, coupled lens group, total reflective mirror, laser gain medium, condenser lens, first
Tuned reflection mirror, MgO: APLN crystal, the second tuned reflection mirror, MgO: PPLN polarization state modulator, driving power, third resonance
Reflecting mirror and outgoing mirror, in which:
The laser diode pumping source is connect with energy-transmission optic fibre；
The coupled lens group and laser gain medium are placed sequentially in the optical path rear of the energy-transmission optic fibre；
The total reflective mirror is placed between coupled lens group and laser gain medium；
The condenser lens, the first tuned reflection mirror, the second tuned reflection mirror and outgoing mirror are placed sequentially in the laser gain
The optical path rear of medium；
The third tuned reflection mirror is placed on optical path side, is formed with the first tuned reflection mirror and the second tuned reflection mirror
Annular optical parametric osoillator, MgO: the APLN crystal and MgO: PPLN polarization state modulator are located in the optical parametric osoillator；
MgO: the APLN crystal is placed on condenser lens between the first tuned reflection mirror and the second tuned reflection mirror
At focusing focus；
MgO: the PPLN polarization state modulator is one or more, and it is anti-to be placed on the first tuned reflection mirror, the second resonance
It penetrates in the optical path that mirror and third tuned reflection mirror are formed；
The quantity of the driving power is corresponding with the quantity of MgO: the PPLN polarization state modulator, respectively with corresponding MgO: PPLN
The two sides electrode slice of polarization state modulator connects, for providing driving power output；
The total reflective mirror and outgoing mirror constitute fundamental frequency optical cavity, the laser gain medium, condenser lens, the first tuned reflection
Mirror, MgO: APLN crystal and the second tuned reflection mirror are located in the fundamental frequency optical cavity.
2. a kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation, which is characterized in that more optical parametric oscillations
Device includes: laser diode pumping source, energy-transmission optic fibre, coupled lens group, total reflective mirror, laser gain medium, condenser lens, first
Tuned reflection mirror, MgO: APLN crystal, the second tuned reflection mirror, the first MgO: PPLN polarization state modulator, the 2nd MgO: PPLN
Polarization state modulator, the first driving power, the second driving power, third tuned reflection mirror and outgoing mirror, in which:
The laser diode pumping source is connect with energy-transmission optic fibre；
The coupled lens group and laser gain medium are placed sequentially in the optical path rear of the energy-transmission optic fibre；
The total reflective mirror is placed between coupled lens group and laser gain medium；
The condenser lens, the first tuned reflection mirror, the second tuned reflection mirror and outgoing mirror are placed sequentially in the laser gain
The optical path rear of medium；
The third tuned reflection mirror is placed on optical path side, is formed with the first tuned reflection mirror and the second tuned reflection mirror
Annular optical parametric osoillator, MgO: the APLN crystal, the first MgO: PPLN polarization state modulator and the 2nd MgO: PPLN polarization state
Modulator is located in the optical parametric osoillator；
MgO: the APLN crystal is placed on condenser lens between the first tuned reflection mirror and the second tuned reflection mirror
At focusing focus；
First MgO: the PPLN polarization state modulator is placed between the second tuned reflection mirror and third tuned reflection mirror；
2nd MgO: the PPLN polarization state modulator is placed between the first tuned reflection mirror and third tuned reflection mirror；
First driving power and the second driving power respectively with the first MgO: PPLN polarization state modulator and the 2nd MgO:
The two sides electrode slice of PPLN polarization state modulator connects, for providing driving power output；
The total reflective mirror and outgoing mirror constitute fundamental frequency optical cavity, the laser gain medium, condenser lens, the first tuned reflection
Mirror, MgO: APLN crystal and the second tuned reflection mirror are located in the fundamental frequency optical cavity.
3. more optical parametric oscillators according to claim 2, which is characterized in that the total reflective mirror is average mirror, is coated with pump
Pu light anti-reflection film and fundamental frequency light high-reflecting film.
4. more optical parametric oscillators according to claim 2, which is characterized in that the laser gain medium is close to total reflective mirror
One end plating pump light and fundamental frequency light anti-reflection film, other end coating basic frequency light anti-reflection film.
5. more optical parametric oscillators according to claim 2, which is characterized in that the condenser lens is biconvex mirror, two-sided
It is coated with pump light anti-reflection film.
6. more optical parametric oscillators according to claim 2, which is characterized in that the first tuned reflection mirror is flat for Ping-
Mirror, it is two-sided to be coated with fundamental frequency light anti-reflection film, 30 ° of high-reflecting films of resonance parameteric light are coated with close to MgO: APLN crystal side single side.
7. more optical parametric oscillators according to claim 2, which is characterized in that MgO: the APLN crystal both ends of the surface are plated
There are fundamental frequency light, signal light and ideler frequency light anti-reflection film.
8. more optical parametric oscillators according to claim 2, which is characterized in that the second tuned reflection mirror is flat for Ping-
Mirror, it is two-sided to be coated with fundamental frequency light and output parameter light anti-reflection film, resonance parameteric light is coated with close to MgO: APLN crystal side single side
30 ° of high-reflecting films.
9. more optical parametric oscillators according to claim 2, which is characterized in that the third tuned reflection mirror is flat for Ping-
Mirror is coated with 30 ° of high-reflecting films of resonance parameteric light close to MgO: APLN crystal side single side.
10. more optical parametric oscillators according to claim 2, which is characterized in that the outgoing mirror is plano-concave mirror, is coated with base
Frequency light high-reflecting film and output parameter light high transmittance film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007026.3A CN109149346B (en) | 2018-08-30 | 2018-08-30 | A kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811007026.3A CN109149346B (en) | 2018-08-30 | 2018-08-30 | A kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109149346A true CN109149346A (en) | 2019-01-04 |
| CN109149346B CN109149346B (en) | 2019-08-06 |
Family
ID=64825727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811007026.3A Active CN109149346B (en) | 2018-08-30 | 2018-08-30 | A kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109149346B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752502A (en) * | 2019-05-09 | 2020-02-04 | 长春理工大学 | Single-longitudinal-mode and non-single-longitudinal-mode dual-wavelength laser alternate Q-switching output method and laser |
| CN110752503A (en) * | 2019-05-09 | 2020-02-04 | 长春理工大学 | Single longitudinal mode and non-single longitudinal mode double-pulse laser alternate Q-switching output method and laser |
| CN111082299A (en) * | 2019-12-16 | 2020-04-28 | 北京理工大学 | All-solid-state tunable intermediate infrared frequency comb generation device |
| CN113314940A (en) * | 2021-05-27 | 2021-08-27 | 长春理工大学 | Multi-wavelength mid-infrared laser pulse train cavity emptying laser based on Nd, MgO and APLN crystals |
| CN113314939A (en) * | 2021-05-27 | 2021-08-27 | 长春理工大学 | Multi-wavelength mid-infrared laser energy ratio regulation and control amplifier based on Nd-MgO-APLN crystal |
| CN114243434A (en) * | 2021-12-16 | 2022-03-25 | 长春理工大学 | Multi-wavelength mid-infrared parametric oscillator based on gain clipping regulation |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11119274A (en) * | 1997-10-17 | 1999-04-30 | Toshiba Corp | Optical parametric oscillator |
| CN1937334A (en) * | 2006-09-01 | 2007-03-28 | 清华大学 | Cascade optical parameter oscillating laser |
| JP2016218373A (en) * | 2015-05-25 | 2016-12-22 | 株式会社メガオプト | Multiwavelength oscillation type optical parametric oscillation device and multiwavelength oscillation type optical parametric oscillation method |
-
2018
- 2018-08-30 CN CN201811007026.3A patent/CN109149346B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11119274A (en) * | 1997-10-17 | 1999-04-30 | Toshiba Corp | Optical parametric oscillator |
| CN1937334A (en) * | 2006-09-01 | 2007-03-28 | 清华大学 | Cascade optical parameter oscillating laser |
| JP2016218373A (en) * | 2015-05-25 | 2016-12-22 | 株式会社メガオプト | Multiwavelength oscillation type optical parametric oscillation device and multiwavelength oscillation type optical parametric oscillation method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752502A (en) * | 2019-05-09 | 2020-02-04 | 长春理工大学 | Single-longitudinal-mode and non-single-longitudinal-mode dual-wavelength laser alternate Q-switching output method and laser |
| CN110752503A (en) * | 2019-05-09 | 2020-02-04 | 长春理工大学 | Single longitudinal mode and non-single longitudinal mode double-pulse laser alternate Q-switching output method and laser |
| CN110752503B (en) * | 2019-05-09 | 2021-01-01 | 长春理工大学 | Single longitudinal mode and non-single longitudinal mode double-pulse laser alternate Q-switching output method and laser |
| CN111082299A (en) * | 2019-12-16 | 2020-04-28 | 北京理工大学 | All-solid-state tunable intermediate infrared frequency comb generation device |
| CN111082299B (en) * | 2019-12-16 | 2021-06-04 | 北京理工大学 | All-solid-state tunable intermediate infrared frequency comb generation device |
| CN113314940A (en) * | 2021-05-27 | 2021-08-27 | 长春理工大学 | Multi-wavelength mid-infrared laser pulse train cavity emptying laser based on Nd, MgO and APLN crystals |
| CN113314939A (en) * | 2021-05-27 | 2021-08-27 | 长春理工大学 | Multi-wavelength mid-infrared laser energy ratio regulation and control amplifier based on Nd-MgO-APLN crystal |
| CN113314940B (en) * | 2021-05-27 | 2022-06-03 | 长春理工大学 | Multi-wavelength mid-infrared laser pulse train cavity emptying laser based on Nd, MgO and APLN crystals |
| CN113314939B (en) * | 2021-05-27 | 2022-06-03 | 长春理工大学 | Multi-wavelength mid-infrared laser energy ratio regulation and control amplifier based on Nd-MgO-APLN crystal |
| WO2022246967A1 (en) * | 2021-05-27 | 2022-12-01 | 长春理工大学 | Multi-wavelength mid-infrared laser pulse serial cavity emptying laser based on nd:mgo:apln crystal |
| CN114243434A (en) * | 2021-12-16 | 2022-03-25 | 长春理工大学 | Multi-wavelength mid-infrared parametric oscillator based on gain clipping regulation |
| CN114243434B (en) * | 2021-12-16 | 2022-12-30 | 长春理工大学 | Multi-wavelength mid-infrared parametric oscillator based on gain clipping regulation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109149346B (en) | 2019-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109149346B (en) | A kind of more optical parametric oscillators realized Energy Reversal and change intracavitary regulation | |
| US5446749A (en) | Diode pumped, multi axial mode, intracavity doubled laser | |
| JP2711006B2 (en) | Laser harmonic generator using low-loss external optical resonator | |
| CN104953461A (en) | Solid laser based on twisted mode cavity and volume grating | |
| CN101741000B (en) | Yellow light laser using cascading superlattice as frequency changer crystal | |
| CN112421364B (en) | Intermediate infrared dual-wavelength time domain programmable regulation laser based on Nd-MgO-PPLN crystal | |
| US6287298B1 (en) | Diode pumped, multi axial mode intracavity doubled laser | |
| CN109038201B (en) | A kind of more optical parametric oscillators of energy component proportion active control | |
| CN107123926A (en) | The production method of super-narrow line width, tunable high power laser system and laser | |
| CN110556699B (en) | High-energy high-light beam quality tunable optical parametric oscillator pumped by nanosecond laser | |
| CN110277726B (en) | Acousto-optic Q-switched ultraviolet laser | |
| CN113314939B (en) | Multi-wavelength mid-infrared laser energy ratio regulation and control amplifier based on Nd-MgO-APLN crystal | |
| CN108521068B (en) | The adjusting device of laser device of adjustable wavelength, pulse width and power | |
| CN102157892A (en) | High-power ultraviolet laser | |
| US6658029B2 (en) | Laser beam-generating apparatus | |
| CN106816807A (en) | Optical fiber laser as pumping source intracavity pump optical parametric oscillator | |
| Li et al. | 530-mW quasi-white-light generation using all-solid-state laser technique | |
| CN107482433B (en) | Optical parametric oscillator | |
| CN106340797A (en) | 2[miu] tunable laser for body grating based and structured ring cavity optical parametric oscillator | |
| CN220021897U (en) | Dual wavelength laser | |
| CN219917893U (en) | Solid laser with bias selection function | |
| CN113725712B (en) | System and method for generating pulse blue laser based on alkali metal vapor and neodymium-doped solid | |
| JPH06265955A (en) | Wavelength converting element | |
| US9362704B2 (en) | Laser resonator for generating frequency-converted laser radiation | |
| CN106451051B (en) | 2 μm of tunable laser of standing-wave cavity optical parametric oscillator are constituted based on body grating |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |