CN2553540Y - Sum frequency output blue light laser - Google Patents
Sum frequency output blue light laser Download PDFInfo
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- CN2553540Y CN2553540Y CN 02237592 CN02237592U CN2553540Y CN 2553540 Y CN2553540 Y CN 2553540Y CN 02237592 CN02237592 CN 02237592 CN 02237592 U CN02237592 U CN 02237592U CN 2553540 Y CN2553540 Y CN 2553540Y
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Abstract
The utility model relates to a sum frequency output blue light laser, comprising a pump light source which is arranged at the front of a resonant cavity lens and pumps laser crystals from the end surface. Wherein, two resonant cavity lenses are oppositely arranged; and a resonant cavity formed in the resonant cavity lens is internally provided with a laser crystal and a multiple frequency crystal. Moreover, the utility model also comprises a dispersion compensation element arranged on the light path between the laser crystal and the multiple frequency crystal in the resonant cavity formed by the resonant cavity lens; the light path at the back of the multiple frequency is provided with a sum frequency crystal, and the light path output by the resonant cavity lens is provided with a beam-splitting prism according to Brewster angle; moreover, an optical element is fixed on an optical tool seat which is fixed on an optical platform. Forming a single-way or double-way sum frequency light path by use of double resonance, the utility model not only overcomes the shortcomings of the prior art that the quansi-three-level is difficult for plating and radiation, but also has simple structure and provides power from few watt to tens of watt, as well as realizing blue light output with high efficiency and high power.
Description
Technical field
The utility model relates to a kind of laser, particularly relates to a kind of and frequently exports the laser aid of blue light.
Background technology
Usually the blue light that is produced by aluminum ions three spectral methods mainly is the fluorescence vibration of adopting the 946nm in aluminum ions three spectral lines, and frequency multiplication produces blue light then.Because 946nm and 1064nm wavelength are approaching, plated film (, 1064nm high anti-as 946nm and 1319nm are high saturating) is difficulty relatively, and the emission cross section of 1064nm spectral line is more than ten times of 946nm spectral line, the starting of oscillation of the spectral line of 946nm is easy to be suppressed, and conventional apparatus has proposed very high requirement to the plated film of chamber mirror and crystal thus.And because the generation of the fluorescence of 946nm belongs to quasi-three-level, the population of the last energy level of its ground state is directly proportional with the index of temperature, follows the rising population of temperature sharply to increase, and so just upset has brought very big difficulty to population.So it is high-power that the blue light that traditional aluminum ions three spectral methods produce is difficult to accomplish, and be difficult to stable.On Opt.Lett (Vol 24), delivered " Generationof 740 mW of blue light by intracavity frequency doubling with a first-order quasi-phase-matched KTiOPO in 1999 as people such as document 1:M.Pierrou
4Crystal " described in: it is that the period polarized titanyl potassium phosphate (PPKTP) of employing comes the fundamental frequency optical sccond-harmonic generation to 946nm, has produced the blue light of the 473nm of 740mW, has only stablized half a minute in the experiment.
Utilize semiconductor laser (LD) pumping solid state gain medium, high efficiency, the high-power all-solid-state visible laser spare of exploitation has compact conformation, long, efficient advantages of higher of life-span, can be applicable to fields such as industry, scientific research, medical treatment, military affairs, demonstration, become one of direction of the most active and tool prospect of laser field in recent years.
There is a kind of laser to export multi-wavelength's laser simultaneously at present, for example: Chinese patent application number: 01136095.X, denomination of invention is: " high power full solid state red, yellow, blue light laser device ", it is to place nonlinear optical crystal, Amici prism and laser crystal between two resonator mirrors successively, rely on Amici prism to make one or two spectral line starting of oscillations, because the branch light action of Amici prism, light path is not a straight line, and this has just brought very big difficulty to adjusting.
Summary of the invention
The purpose of this utility model is to overcome existing YAG laser because its three spectral lines (946nm, 1064nm, 1319nm) are more approaching, the shortcoming of the starting of oscillation of the spectral line of the very difficult realization of plated film 946nm on resonator mirror; In addition, existing another kind is full-solid-state red, yellow in order to overcome, the shortcoming of blue light laser device, and promptly this laser aid is to rely on Amici prism to make one or two spectral line starting of oscillations, because the branch light action of Amici prism, light path is not a straight line, and this has just brought very big difficulty to adjusting.In order to realize the output of efficient high power blue laser, the utility model adopts double resonance and frequency method to change the purpose of carrying out frequency multiplication output blue light in the conventional apparatus light path by the laser to 946nm, overcome the shortcoming that quasi-three-level is difficult to starting of oscillation in original technology, can obtain the blue light output of 440nm, 447nm, 438nm, thereby a kind of high-power all-solid-state double resonance and frequency blue light laser aid that is widely used in fields such as military affairs, scientific research, amusement, medical treatment is provided.
The purpose of this utility model is achieved in that a kind of and laser aid of exporting blue light frequently that the utility model provides, and comprising: settle pump light source, resonator mirror, laser crystal, frequency-doubling crystal resonant cavity mirror successively on light path; Two resonator mirrors are formed laserresonator; Pump light source is placed in the place ahead of a resonator mirror from the end pumped laser crystal; It is characterized in that: the laser crystal and the light path between the frequency-doubling crystal that also are included in the laserresonator are provided with a chromatic dispersion compensating element,, arrangement one and frequency crystal are settled an Amici prism by Brewster angle on the light path of resonator mirror output on the light path behind the frequency-doubling crystal; Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
Also comprise a Compound Cavity mirror, this Compound Cavity mirror is placed on the light path between Amici prism and the nonlinear optical crystal; Described Compound Cavity mirror is flat mirror.Form two and frequency multiplication.
Also be included between laser crystal and Compound Cavity mirror or laser crystal and the Amici prism and settle Q switching, to produce quasi-continuous blue light output.Described Q switching can be used electro-optical Q-switch, acoustooptic Q-switching, acousto-optic mode-locking device.
Described resonator mirror is more than two or two at least; The 3rd resonator mirror is placed on the resonator mirror reflected light path, and arrangement one and frequency crystal between resonator mirror and resonator mirror.
Also comprise the 4th resonator mirror, resonator mirror is placed on the reflected light path of resonator mirror, and arrangement one and frequency crystal between resonator mirror and resonator mirror, settles an Amici prism (7) by Brewster angle on the light path of resonator mirror output.Can also comprise that the polylith resonator mirror repeatedly turns back.
Described pump light source source is semiconductor laser (LD), for example: semiconductor laser; This semiconductor laser can be placed on dead ahead or side the place ahead of a resonator mirror end face, and pump light source incides on the incident mirror of resonator mirror or pumping is carried out in the side of laser crystal.
Described laser crystal is neodymium-doped yttrium-aluminum garnet (Nd:YAG) or yttrium-aluminium-garnet (YAG) or mixes aluminium vanadic acid yttrium (Nd:YVO
4); Utilize semiconductor laser (LD) pumping laser crystal to produce the fluorescence of 1319nm, 1342nm and 1321nm.
Described Amici prism is Brewster angle prism or other prism.
Described resonator mirror can be flat mirror, plano-concave mirror, planoconvex lens, grating, Fabry-Perot etalon.
Described frequency-doubling crystal comprises: three lithium borates (LBO), barium metaborate (BBO), potassium niobate (KNbO
3), titanyl potassium phosphate (KTP), periodic polarized titanyl potassium phosphate (PPKTP), periodic polarized lithium tantalate (PPLT), periodic polarized lithium niobate (PPLN); Or other nonlinear optical crystal and optical superlattice crystal.
Described and frequency crystal comprises: three lithium borates (LBO), barium metaborate (BBO), potassium niobate (KNbO
3), titanyl potassium phosphate (KTP), periodic polarized titanyl potassium phosphate (PPKTP), periodic polarized lithium tantalate (PPLT), periodic polarized lithium niobate (PPLN); Or other nonlinear optical crystal and optical superlattice crystal.
The course of work of the present utility model: the fluorescence that produces 1319nm when diode-end-pumped Nd:YAG laser crystal, fluorescence produces the frequency doubled light of 660nm after through a frequency-doubling crystal, utilize dispersive compensation element to make starting of oscillation simultaneously in the two-beam chamber, use again and frequently crystal two-beam and frequently, with regard to the blue light of exportable 440nm.Also be included in the structure of settling a Compound Cavity mirror on the light path between Amici prism and the nonlinear optical crystal, improve the nonlinear optical crystal conversion efficiency, obtain blue light output to realize the bilateral frequency multiplication.
Superiority of the present utility model: laser aid of the present utility model adopts double resonance and exports blue light frequently, it is by resonator mirror, laser crystal, dispersive compensation element, frequency-doubling crystal and one and frequently crystal place on the light path, laser crystal is placed between resonator mirror and the dispersive compensation element, pump light source is by side or end pumping Nd:YAG, the fundamental frequency light of the 1319nm that produces is become the ruddiness of 660nm by frequency multiplication, regulate dispersive compensation element and make fundamental frequency light and frequency doubled light starting of oscillation simultaneously, with the frequency crystal on and the blue light output that frequently produces 440nm, overcome the shortcoming that prior art is regulated difficulty.
The utility model can also be exported ruddiness and blue light simultaneously.
A kind of double resonance and laser aid of exporting blue light frequently of adopting that the utility model provides adopts two blocks of nonlinear optical crystals and two chamber mirrors to form bilateral and frequency light path, overcome the shortcoming that is difficult to starting of oscillation of the quasi-three-level 946nm in original technology, and it is simple in structure, its power can reach several watts to tens watts, realized efficient, powerful blue light output, be widely used in continuous wave, quasi c. w., open up wide prospect for high efficiency Compound Cavity bilateral frequency doubling technology practicability, can be widely used in fields such as military affairs, scientific research, amusement, medical treatment.
Description of drawings:
Fig. 1 is that the utility model laser aid is formed schematic diagram
Fig. 2 is of the present utility model and exports the index path (continuous wave) of blue light laser device frequently
Fig. 3 is of the present utility model and exports the index path (continuous wave) of blue light Compound Cavity laser aid frequently
Fig. 4 is the index path (quasi c. w.) of employing double resonance exocoel of the present utility model and frequency blue light laser aid
Fig. 5 is the index path (continuous wave) of refrative cavity blue light laser device of the present utility model
Fig. 6 is the index path (continuous wave) of four mirror refrative cavity blue light laser devices of the present utility model
The drawing explanation:
1,6,11,12-resonator mirror 2-laser crystal;
The 3-dispersive compensation element; The 4-frequency-doubling crystal;
5-and frequency crystal; The 7-Amici prism;
8-Compound Cavity mirror; The 9-Q switch
The 10-pump light source
Embodiment
Embodiment 1: double resonance and the frequency blue light laser aid of making an output continuous wave blue light according to the light path of Fig. 2
This laser laser aid is included in settles semiconductor laser to make pump light source 10 successively on the light path, use the plano-concave mirror, the anti-reflection film of its plane plating 808nm, and the high-reflecting film of the anti-reflection film of concave surface plating 808nm and 1319nm, 660nm, 440nm is made resonator mirror 1; Laser crystal Nd:YAG 2, frequency-doubling crystal 4, chamber mirror 6 are selected the plano-concave mirror for use, the high-reflecting film of its concave surface plating 1319nm, 660nm and the anti-reflection film of 440nm; With Amici prism 7; Also comprise: one and crystal 5 frequently, it selects lbo crystal for use, and its cutting angle is θ=90.0 °, and Φ=21.0 ° are placed between frequency-doubling crystal 4 and the chamber mirror 6, dispersive compensation element 3 and an Amici prism 7; Wherein laser crystal 2 is settled successively in pump light source 10 the place ahead of being placed in a resonator mirror 1 on the light path between end pumped laser crystal 2, two resonator mirrors 1,6; Dispersive compensation element 3 is that an isotropic glass is split, and is placed between laser crystal 2 and the frequency-doubling crystal 4; A frequency-doubling crystal 4 is selected bbo crystal for use, and the cutting angle of BBO is θ=20.4 °, be placed on dispersive compensation element 3 and and crystal LBO5 between the crystal 5 and frequently frequently, on the light path of another resonator mirror 6 outputs, press the Amici prism 7 of Brewster angle arrangement; Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
The laser crystal Nd:YAG2 of this laser aid by the semiconductor laser end pumping after, the laser that produces 1319nm vibrates in the resonant cavity that is made of resonator mirror 1,6, the laser of this wavelength when the frequency-doubling crystal 4 by frequency multiplication, make fundamental frequency light and frequency doubled light starting of oscillation simultaneously by dispersive compensation element 3, quilt became blue light with frequency when fundamental frequency light passed through with the frequency crystal 5 with frequency doubled light.So just avoided the 946nm starting of oscillation of quasi-three-level dexterously.The laser freuqency doubling of 1319nm wavelength is become the ruddiness of 660nm; Semiconductor laser LD is placed in the back of resonator mirror 1 from the end pumped laser crystal 2 as pump light source 10.Regulate the fluorescence starting of oscillation that resonator mirror 1 and 6 makes 1319nm, regulate glass and split the 3 laser starting of oscillations simultaneously that make laser and the 660nm of 1319nm, then at the continuous wave blue light of Brewster angle prism 7 places output 440nm.
Embodiment 2: the light path of pressing Fig. 3 is made the double resonance and the frequency blue light Compound Cavity laser aid of an output continuous wave blue light
This laser aid is included in settles the LD semiconductor laser to make pump light source 10 successively on the light path, use the plano-concave mirror, the anti-reflection film of plane plating 808nm, and the high-reflecting film of the anti-reflection film of concave surface plating 808nm and 1319nm, 660nm, 440nm is made resonator mirror 1; Laser crystal Nd:YAG2, a frequency-doubling crystal 4 are selected lbo crystal for use, the cutting angle of BBO is θ=4.2 °, the plano-concave mirror of the high-reflecting film of Φ=0 °, a concave surface plating 1319nm, 660nm and the anti-reflection film of 440nm is made chamber mirror 6 and Amici prism 7, it is characterized in that: also comprise: Compound Cavity mirror 8, one and frequently crystal 5 select periodically poled lithium niobate crystal PPLN for use, the polarization cycle of PPLN is 4.0 μ m, is placed between Compound Cavity mirror 8 and the chamber mirror 6, dispersive compensation element 3; Wherein to settle laser crystal 2, dispersive compensation element 3 successively on the light path between end pumped laser crystal 2, two resonator mirrors 1,6 be a single axial birefringence crystal in pump light source 10 the place ahead of being placed in a resonator mirror 1, be placed between laser crystal 2 and the frequency-doubling crystal 4, the direction quadrature of crystallographic axis and light path, frequency-doubling crystal are that LBO4, Compound Cavity mirror 8 are selected flat mirror for use, plate the partial reflection film (R=90%) of 1319nm near the one side of frequency-doubling crystal 4; With with frequency crystal PPLN5, on the light path of another resonator mirror 6 outputs, press the Amici prism 7 of Brewster angle arrangement; Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
The laser crystal Nd:YAG2 of this laser aid by the semiconductor laser end pumping after, the laser that produces 1319nm vibrates in the resonant cavity that is made of resonator mirror 1,6, the laser of this wavelength when the frequency-doubling crystal 4 by frequency multiplication, make fundamental frequency light and frequency doubled light starting of oscillation between the resonant cavity that constitutes by Compound Cavity mirror 8 resonant cavity mirrors 6 by dispersive compensation element 3, and quilt becomes blue light with the frequency crystal 5 with frequency.So just avoided the 946nm starting of oscillation of quasi-three-level dexterously.A frequency-doubling crystal 4 is placed between dispersive compensation element 3 and the Compound Cavity mirror 8, the laser freuqency doubling of 1319nm wavelength is become the ruddiness of 660nm.
Regulate the fluorescence starting of oscillation that resonator mirror 1 and 6 makes 1319nm, regulate the laser starting of oscillation simultaneously that the single axial birefringence crystal 3 makes laser and the 660nm of 1319nm, regulate Compound Cavity mirror 8 laser of 1319nm and the laser of 660nm are produced and frequency, then export the continuous wave blue light of 440nm at Brewster angle prism 7 places.
Embodiment 3: the light path of pressing Fig. 4 is made the double resonance exocoel and the frequency blue light laser of an output quasi c. w. blue light
This laser comprises settles semiconductor laser to make pump light source 10 successively, with the high-reflecting film of the anti-reflection film of front end face plating 808nm and 1342nm, 671nm, 447nm, the front end face of the laser crystal 2 of the anti-reflection film of rear end face plating 1342nm, 671nm, 447nm is made resonator mirror; Dispersive compensation element 3, frequency-doubling crystal 4 and crystal 5 and Amici prism 7 frequently is characterized in that: also comprise: Q switching 9 be placed on frequency-doubling crystal 4 and and frequently between the crystal 5; Wherein pump light source 10 the place ahead of being placed in laser crystal 2 from end face carry out pumping, with near one side plating 1342nm, the 671nm of Q switching 9, the anti-reflection film of 447nm, the rear end face with the frequency crystal 5 of the high-reflecting film of rear end face plating 1342nm, 671nm and the anti-reflection film of 447nm is made resonator mirror, settle successively on the light path in the resonant cavity laser crystal 2, dispersive compensation element 3, frequency-doubling crystal BBO4, Q switching 9 and and crystal KTP5 frequently, press the Amici prism 7 of Brewster angle arrangement at the output of light path; Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
The laser crystal Nd:YVO of this laser
42 by behind the semiconductor laser end pumping, the laser that produces 1342nm by the front end face of laser crystal 2 and and the rear end face of crystal 5 constitutes frequently resonant cavity in vibrate, the fluorescence of this wavelength when the frequency-doubling crystal 4 by frequency multiplication, make fundamental frequency light and frequency doubled light starting of oscillation simultaneously by dispersive compensation element 3, quilt became blue light with frequency when fundamental frequency light passed through with the frequency crystal 5 with frequency doubled light.So just avoided the 914nm starting of oscillation of quasi-three-level dexterously.One and frequently crystal 5 select ktp crystal for use, the cutting angle of KTP is θ=78.6 °, Φ=0 ° is placed on the back of Q switching 9; A frequency-doubling crystal 4 is selected bbo crystal for use, and the cutting angle of BBO is θ=20.3 °, be placed on dispersive compensation element 3 and and frequently between the crystal 5, the laser freuqency doubling of 1342nm wavelength is become the ruddiness of 671nm; Dispersive compensation element 3 is that an isotropic glass is split, and is placed between laser crystal 2 and the frequency-doubling crystal 4; Semiconductor laser LD is placed in the front of laser crystal 2 and carries out pumping from end face as pump light source 10.
Regulate laser crystal 2 and and frequently crystal 5 make the fluorescence starting of oscillation of 1342nm, regulate glass and split the 3 laser starting of oscillations simultaneously that make laser and the 671nm of 1342nm, then at the quasi c. w. blue light of Brewster angle prism 7 places output 447nm.
Embodiment 4: double resonance and the frequency blue light refrative cavity laser of making an output continuous wave blue light by Fig. 5
This laser comprises the 3rd resonator mirror 11, and this resonator mirror 11 is placed on resonator mirror 6 reflected light paths, and arrangement one and frequency crystal 5 between resonator mirror 11 and resonator mirror 6.All the other opticses are with embodiment 1; Its index path is pressed Fig. 5.This laser constitution is used the plano-concave mirror by settling semiconductor laser to make pump light source 10 successively, the anti-reflection film of plane plating 808nm, and the anti-reflection film of concave surface plating 808nm and the high-reflecting film of 1313nm, 656nm are made resonator mirror 1; Laser crystal Nd:YLF2, frequency-doubling crystal 4, resonator mirror 6,11 and Amici prism 7 also comprise: and frequency crystal 5, dispersive compensation element 3 and an Amici prism 7; Wherein pump light source 10 the place ahead of being placed in a resonator mirror 1 is settled laser crystal 2, dispersive compensation element 3, frequency-doubling crystal LBO4 and crystal LBO5 frequently on the light path between end pumped laser crystal 2, two resonator mirrors 1,6,11 successively, press the Amici prism 7 of Brewster angle arrangement on the light path of resonator mirror 6 outputs; Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
The laser crystal Nd:YLF2 of this laser by the semiconductor laser end pumping after, the laser that produces 1313nm vibrates in the resonant cavity that is made of resonator mirror chamber 1,6,11, the fluorescence of this wavelength when the frequency-doubling crystal 4 by frequency multiplication, make fundamental frequency light and frequency doubled light starting of oscillation simultaneously by dispersive compensation element 3, quilt became blue light with frequency when fundamental frequency light passed through with the frequency crystal 5 with frequency doubled light.Chamber mirror 1 is selected the plano-concave mirror for use, the anti-reflection film of plane plating 808nm, the anti-reflection film of concave surface plating 808nm and the high-reflecting film of 1313nm, 656nm; Chamber mirror 6 is selected the plano-concave mirror for use, the high-reflecting film of concave surface plating 1313nm, 656nm and the anti-reflection film of 438nm; Chamber mirror 11 is selected flat mirror for use, the high-reflecting film of one side plating 1313nm, 656nm close and crystal 5 frequently, 438nm; A frequency-doubling crystal 4 is selected lbo crystal for use, and the cutting angle of LBO is θ=4.3 °, and Φ=0 ° is placed between the dispersive compensation element 3 resonant cavity mirrors 6, the laser freuqency doubling of 1313nm wavelength is become the ruddiness of 656nm; One and frequently crystal 5 select lbo crystal for use, the cutting angle of LBO is θ=13.9 °, Φ=0 ° is placed between chamber mirror 6 and the chamber mirror 11; Dispersive compensation element 3 is an electrooptic crystal, is placed between laser crystal 2 and the frequency-doubling crystal 4; Semiconductor laser LD is placed in the back of resonator mirror 1 from the end pumped laser crystal 2 as pump light source 10.
Regulate the fluorescence starting of oscillation that resonator mirror 1 and 11 makes 1313nm, regulate the laser starting of oscillation simultaneously that electrooptic crystal 3 makes laser and the 656nm of 1313nm, regulate chamber mirror 6 laser of 1313nm and the laser of 656nm are produced and frequency, then export the continuous wave blue light of 438nm at Brewster angle prism 7 places.
Embodiment 5: double resonance and the blue four mirror light refrative cavity lasers of frequency of making an output continuous wave blue light by Fig. 6
This laser is also to comprise the 4th resonator mirror, the 4th resonator mirror 12 is placed on the reflected light path of resonator mirror 11, and arrangement one and frequency crystal 5 between resonator mirror 11 and resonator mirror 12, on the light path of resonator mirror 11 outputs, settle an Amici prism 7 by Brewster angle.This laser is pressed Fig. 6 and is made, be included in and settle resonator mirror 1, laser crystal Nd:YAG2, frequency-doubling crystal 4, resonator mirror 6,11,12 and Amici prism 7 on the light path successively, it is characterized in that: also comprise: and frequency crystal 5, dispersive compensation element 3 and an Amici prism 7; Wherein pump light source 10 side that is placed in laser crystal 2 is settled laser crystal 2, dispersive compensation element 3, frequency-doubling crystal BBO4 and crystal 5 frequently from the side on the light path between pumping laser crystal 2, two resonator mirrors 1,6,11,12 successively, press the Amici prism 7 of Brewster angle arrangement on the light path of another resonator mirror 11 outputs; Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
The laser crystal Nd:YAG2 of this laser by the semiconductor laser end pumping after, the laser that produces 1319nm vibrates in the resonant cavity that is made of resonator mirror chamber 1,6,11,12, the fluorescence of this wavelength when the frequency-doubling crystal 4 by frequency multiplication, make fundamental frequency light and frequency doubled light starting of oscillation simultaneously by dispersive compensation element 3, quilt became blue light with frequency when fundamental frequency light passed through with the frequency crystal 5 with frequency doubled light.So just avoided the 946nm starting of oscillation of quasi-three-level dexterously.Chamber mirror 1 is selected the plano-concave mirror for use, the anti-reflection film of plane plating 808nm, the anti-reflection film of concave surface plating 808nm and the high-reflecting film of 1319nm, 660nm; Chamber mirror 6 is selected the plano-concave mirror for use, the high-reflecting film of concave surface plating 1319nm, 660nm; Chamber mirror 11 is selected the plano-concave mirror for use, the high-reflecting film of concave surface plating 1319nm, 660nm and the anti-reflection film of 440nm; Chamber mirror 12 is selected the plano-concave mirror for use, the high-reflecting film of concave surface plating 1319nm, 660nm and 440nm; A frequency-doubling crystal 4 is selected bbo crystal for use, and the cutting angle of BBO is θ=20.4 °, is placed between resonator mirror 6 and 11, the laser freuqency doubling of 1319nm wavelength is become the ruddiness of 660nm; One and frequently crystal 5 select periodic polarized titanyl potassium phosphate crystal PPKTP for use, the polarization cycle of PPKTP is 5.1 μ m, is placed between chamber mirror 11 and 12; Dispersive compensation element 3 is an electrooptic crystal, is placed between laser crystal 2 and the frequency-doubling crystal 4; The side that semiconductor laser LD is placed in resonator mirror 1 as pump light source 10 is the pumping laser crystal 2 from the side.
Regulate the fluorescence starting of oscillation that resonator mirror 1,6,11 and 12 makes 1319nm, regulate the laser starting of oscillation simultaneously that electrooptic crystal 3 makes laser and the 660nm of 1319nm, regulate chamber mirror 6 laser of 1319nm and the laser of 660nm are produced and frequency, then export the continuous wave blue light of 440nm at Brewster angle prism 7 places.
Claims (13)
1. one kind and frequently export the laser aid of blue light, comprising: settle pump light source (10) on light path successively, pump light source (10) is placed in the place ahead of a resonator mirror (1) from end pumped laser crystal (2), and two resonator mirrors (1), (6) are oppositely arranged; And in the resonant cavity that resonator mirror (1), (6) form, settle laser crystal (2), frequency-doubling crystal (4) successively; It is characterized in that: the laser crystal (2) and the light path between the frequency-doubling crystal (4) that also are included in the resonant cavity that is formed by resonator mirror (1), (6) are provided with a chromatic dispersion compensating element, (3), arrangement one and frequency crystal (5) are settled an Amici prism (7) by Brewster angle on the light path of resonator mirror (6) output on the light path behind the frequency-doubling crystal (4); Described optical element is fixed on the optics tool seat, and optics tool seat is fixed on the optical table.
2. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: also being included in has a Compound Cavity mirror (8) in the light path, this Compound Cavity mirror (8) be placed in frequency-doubling crystal (4) with and frequency crystal (5) between light path in; This Compound Cavity mirror (8) is flat mirror.
3. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: also being included in has a Q switching (9) in the light path, this Q switching (9) be placed in frequency-doubling crystal (4) with and frequency crystal (5) between light path in; Described Q switching (9) is electro-optical Q-switch, acoustooptic Q-switching or acousto-optic mode-locking device.
4. described and frequently export the laser aid of blue light by claim 3, it is characterized in that: described resonator mirror is more than two or two at least; The 3rd resonator mirror (11) is placed on resonator mirror (6) reflected light path, and arrangement one and frequency crystal (5) between resonator mirror (11) and resonator mirror (6).
5. described and frequently export the laser aid of blue light by claim 4, it is characterized in that: also comprise the 4th resonator mirror (12), resonator mirror (12) is placed on the reflected light path of resonator mirror (11), and arrangement one and frequency crystal (5) between resonator mirror (11) and resonator mirror (12), on the light path of resonator mirror (11) output, settle an Amici prism (7) by Brewster angle.
6. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described resonator mirror (1), (6) can be flat mirror, plano-concave mirror, planoconvex lens, grating or Fabry-Perot etalon.
7. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described laser crystal (5) comprises Nd:YAG, Nd:YVO4, Nd:YLF.
8. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described dispersive compensation element (3) comprises that isotropic glass is split, single axial birefringence crystal, electrooptic crystal, or other dispersive compensation element.
9. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described frequency-doubling crystal (2) comprising: three lithium borates, barium metaborate, potassium niobate, titanyl potassium phosphate, periodic polarized titanyl potassium phosphate, periodic polarized lithium tantalate, periodic polarized lithium niobate or other nonlinear optical crystal.
10. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described and frequently crystal (2) comprising: three lithium borates, barium metaborate, potassium niobate, titanyl potassium phosphate, periodic polarized titanyl potassium phosphate, periodic polarized lithium tantalate, periodic polarized lithium niobate or other nonlinear optical crystal.
11. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described pump light source (4) is semiconductor laser.
12. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described pump mode can be an end pumping, also can be profile pump.
13. described and frequently export the laser aid of blue light by claim 1, it is characterized in that: described Amici prism (7) can be the Brewster angle prism, also can be other prism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237592 CN2553540Y (en) | 2002-06-11 | 2002-06-11 | Sum frequency output blue light laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02237592 CN2553540Y (en) | 2002-06-11 | 2002-06-11 | Sum frequency output blue light laser |
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| CN2553540Y true CN2553540Y (en) | 2003-05-28 |
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| CN 02237592 Expired - Lifetime CN2553540Y (en) | 2002-06-11 | 2002-06-11 | Sum frequency output blue light laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301576C (en) * | 2004-12-31 | 2007-02-21 | 西北大学 | Laser diode pumping full-solid ultraviolet pulse laser |
| CN109586153A (en) * | 2019-01-02 | 2019-04-05 | 中国科学院上海光学精密机械研究所 | Neodymium-doped lithium fluoride yttrium nanosecond pulse blue laser |
-
2002
- 2002-06-11 CN CN 02237592 patent/CN2553540Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301576C (en) * | 2004-12-31 | 2007-02-21 | 西北大学 | Laser diode pumping full-solid ultraviolet pulse laser |
| CN109586153A (en) * | 2019-01-02 | 2019-04-05 | 中国科学院上海光学精密机械研究所 | Neodymium-doped lithium fluoride yttrium nanosecond pulse blue laser |
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