CN105958311A - Dual-rectangular hollow laser based on spherical aberration regulation-control thermal-stability region and laser shaping and amplification - Google Patents
Dual-rectangular hollow laser based on spherical aberration regulation-control thermal-stability region and laser shaping and amplification Download PDFInfo
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- CN105958311A CN105958311A CN201610464480.6A CN201610464480A CN105958311A CN 105958311 A CN105958311 A CN 105958311A CN 201610464480 A CN201610464480 A CN 201610464480A CN 105958311 A CN105958311 A CN 105958311A
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- 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
- H01S3/102—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation
- H01S3/1022—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling the active medium, e.g. by controlling the processes or apparatus for excitation by controlling the optical pumping
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- 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
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
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- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
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- 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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/164—Solid materials characterised by a crystal matrix garnet
- H01S3/1643—YAG
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- Optics & Photonics (AREA)
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Abstract
The invention discloses a dual-rectangular hollow laser based on a spherical aberration regulation-control thermal-stability region and laser shaping and amplification, and belongs to the technical field of laser. The dual-rectangular hollow laser comprises a local oscillator stage and an amplification stage; a local oscillator pump, a focusing coupling lens group, a total-reflection-cavity mirror, a local oscillator gain dielectric rod, an auxiliary lens and a local oscillator output coupling lens are optically and coaxially arranged in sequence; the total-reflection-cavity mirror is a plano-concave lens, and the concave surface of plano-concave lens faces to the local oscillator gain dielectric rod; the local oscillator pump is 10-40W in output power; the auxiliary lens is a positive lens; the circular cone lens group in the amplification stage pumping light source comprises two positive circular cone lens which are arranged in opposite; a middle-transmission reflective mirror is positioned on the optical axis on one side of the output end of the circular cone lens group, and an angle of 45 degrees is formed between the middle-transmission reflective mirror and the optical axis; the amplification gain dielectric rod is positioned between one side of the middle-transmission reflective mirror and an external-transmission reflective mirror; and the external-transmission reflective mirror is perpendicular to the optical axis of the amplification gain dielectric rod. Dual-half Gaussian hollow resonant light is obtained based on the spherical aberration regulation-control thermal-stability region; and then the dual-half Gaussian hollow resonant light is shaped and amplified through inverse dual-half Gaussian hollow pump light to obtain the dual-rectangular hollow laser.
Description
Technical field
The present invention relates to a kind of spherical aberration regulation and control Re Wen district and the hollow laser instrument of double square is amplified in laser sizing, utilize spherical aberration regulation and control heat steady
District obtains double half-gauss hollow harmonic light, uses the sizing of anti-double half-gauss hollow pump light to amplify described double half-gauss hollow harmonic light,
Obtain the hollow laser of double square, belong to laser technology field.
Background technology
Hollow laser be a kind of central light strength in the propagation direction be the annular beam of zero, be referred to as " hollow beam " or " in the dark
Empty light beam ".Hollow beam has tubular intensity distributions, less skin dark stain size and propagates invariance, spin and orbital angular momentum
Etc. feature so that hollow beam can act as laser catheter, optical tweezers and optical wrench, for accurate manipulation and control micron
The microcosmic particles such as particle, nanoparticle and biological cell.
The method of existing acquisition hollow beam has method of geometrical optics, mode conversion method, calculating holography method etc., it is thus achieved that such as
Bagel hollow beam, high-order bessel beam, bottle beams etc., but, the light distribution of the hollow beam obtained
Be still Gauss distribution, different conventional be this hollow beam be double half-gauss hollow light beam or anti-double half-gauss hollow light beam,
Its light distribution is as shown in Fig. 1 or Fig. 2.Such as, Patent No. ZL200810051203.8, entitled " quasi-double half-gauss
Hollow laser beam formed device " Chinese invention patent disclose one according to method of geometrical optics obtain hollow beam technology
Scheme.As it is shown on figure 3, solid gauss laser is irradiated to positive axis conical reflector c from entrance aperture b of concave spherical mirror a,
It is converted into the hollow cone laser dissipated after reflection, concave spherical mirror a reflects, then collimated by plus lens d, obtain standard
Straight hollow cylinder laser.Compared with incident solid gauss laser, the hollow cylinder laser of outgoing is a kind of double half-gauss hollow
Light beam.
But, whether double half-gauss hollow light beam or anti-double half-gauss hollow light beam, although outside the former inwall, the latter
The light intensity of wall is phase step type change, but, the former outer wall, the light intensity of inwall of the latter are not the most phase step type changes, and
And, from light beam inwall to outer wall, light intensity is successively decreased by Gaussian function or is incremented by, and this hollow beam centering atom does not have height
Effect Sisyphus cooling effect, wants to obtain this effect, it is desirable to the inwall of light beam, outer wall light intensity all change in phase step type,
And from light beam inwall to outer wall, light intensity is constant, as shown in Figure 4, this hollow beam is referred to as double square hollow beam, double square
Hollow beam has high intensity gradient, it is expected to meet or exceed the intensity gradient of evanescent lignt-wave, but, this is one
Hollow beam in class design, prior art not yet obtains this hollow beam.
It addition, described prior art is to take technical measures to obtain hollow beam, as an entirety, device outside laser instrument
Structure become complicated, volume increases, cost improves.
Summary of the invention
In order to obtain a kind of double square hollow beam, we have invented a kind of spherical aberration regulation and control Re Wen district and double square is amplified in laser sizing
Hollow laser instrument.
The spherical aberration regulation and control Re Wen district of the present invention and laser sizing are amplified the hollow laser instrument of double square and be it is characterized in that, such as Fig. 5, Fig. 6
Shown in, it is made up of local oscillator level and amplifier stage；In local oscillator level, local oscillator pumping 1, focusing coupling mirror group 2, the chamber mirror 3 that is all-trans, basis
Shake gain media rod 4, auxiliary lens 5, local oscillator output coupling mirror 6 optics arranged in co-axial alignment successively；Focus on coupling mirror group 2 by two
Planoconvex lens is constituted, and convex surface is relative；The chamber mirror 3 that is all-trans is planoconcave lens, and concave surface is towards local oscillator gain media rod 4；Work as local oscillator
When the output of pumping 1 is 10～40W, auxiliary lens 5 is plus lens, when the output of local oscillator pumping 1 is 41～80W
Time, auxiliary lens 5 is minus lens；Output coupling mirror 6 is plane mirror；In amplifier stage, amplify pumping 7, collimating mirror group 8,
Conical Lenses group 9 optics arranged in co-axial alignment successively constitutes a pump light source；Collimating mirror group 8 is telescope；Conical Lenses group 9 by
The positive round axicon lens composition of two opposing placements；Middle Transflective mirror 10 is positioned on the optical axis of Conical Lenses group 9 outfan side, and
It is 45° angle with optical axis；Gain amplifier dielectric rod 11 is positioned at the luminous reflectance side of middle Transflective mirror 10 and outer transmission reflecting mirror 12
Between, outer transmission reflecting mirror 12 is vertical with the optical axis of gain amplifier dielectric rod 11；When amplifier stage uses two pump light sources,
Outer transmission reflecting mirror 12 is 45° angle with the optical axis of gain amplifier dielectric rod 11, is positioned at the circular cone setting up in pump light source saturating simultaneously
On the optical axis of mirror group 9 outfan side, and it is 45° angle with this optical axis；Local oscillator gain media rod 4 and gain amplifier dielectric rod 11
Excitation wavelength identical；Middle Transflective mirror 10 and outer transmission reflecting mirror 12 are high thoroughly to excitation wavelength, high to amplifier stage pump light
Instead.
Its technique effect of the present invention is as described below.The local oscillator level of the laser instrument of the present invention produces and empty to amplifier stage output double half-gauss
Heart light beam.After local oscillator gain media rod 4 absorptive pumping light, its thermal conductivity and thermo-optical coeffecient vary with temperature, and produce thermal lensing effect,
Due to spherical aberration, the laser of different order mode has different thermal focal length values, and this will make not same-order eigenmode
Dynamic stable region separates.In order to this process is described, it is assumed that the long-armed of laser resonant cavity is 50mm for 350mm, galianconism,
TEM01*And TEM10The thermal focal length of mould is respectively TEM001.1 times and 1.2 times, the power of calculated not same order
Stable region, as shown in Figure 7, it is seen that, the first Dynamic stable region of each order mode essentially coincides, and the second Dynamic stable region has
Bigger separation, if being set in pump power 60～63W region, the most only TEM by operating point01*Pattern can be formed stably shakes
Swing, produce hollow beam, and other pattern all because can not meet stability condition and cannot starting of oscillation.Accordingly, local oscillator level of the present invention
The spherical aberration regulation and control Re Wen district utilizing thermal lensing effect to bring produces hollow beam output, specially double half-gauss hollow harmonic light.In detail
State as follows.Auxiliary lens 5 combines local oscillator gain media rod 4 thermal lens regulation intracavity harmonic light spherical aberration, and, when local oscillator pumping
The output of 1 relatively low namely 10～40W time, thermal lensing effect the spherical aberration caused is less, now, by adjusting resonance
The parameter in chamber, such as the chamber mirror 3 that is all-trans, the radius of curvature of local oscillator output coupling mirror 6, arm ratio long-armed, short, all not enough so that
Other two low step modes second Dynamic stable region occur separate significantly time, can by increase auxiliary lens 5 spherical aberration such as
Auxiliary lens 5 is designed as plus lens and increases its radius of curvature such as 150mm and realize；When local oscillator pumping 1 output relatively
Height namely 41～80W time, thermal lensing effect is more serious, thermal lensing effect the spherical aberration caused is excessive, now, will auxiliary
Lens 5 are designed as minus lens, and radius of curvature is-100mm, have the most both alleviated thermal lensing effect, and can regulate again different mode
Best operating point in the second Dynamic stable region.Occur significantly separating situation in the second Dynamic stable region of several low step modes
Under, select only allowing TEM by pump power01*Mould can be in the range of starting of oscillation, then other low step mode TEM00、TEM01
Due to loss excessive and by TEM01*The compacting of mould, owing to pump light is Gaussian beam, the harmonic light of local oscillator level output is finally
Double half-gauss hollow harmonic light.
In amplifier stage, the pump light that amplification pumping 7 sends also is Gaussian beam originally, saturating through the incident circular cone of collimating mirror group 8
Mirror group 9, as shown in Figure 8, after first positive round axicon lens refraction, the hollow cone light beam that formation dissipates, and Gaussian beam
Central ray A becomes the outer wall light of hollow cone light beam after being refracted, the rim ray B of Gaussian beam becomes empty after being refracted
The inwall light of heart conical beam；After described hollow cone light beam is by second positive round axicon lens refraction, form parallel hollow cylinder
Light beam, the light intensity of its outer wall light is the strongest, weakens with Gaussian function form to inwall light light intensity from outer wall light, therefore, this
It is a branch of anti-double half-gauss hollow light beam, say, that what amplifier stage pump light source was given is anti-double half-gauss hollow pump light.
Described anti-double half-gauss hollow pump light is reflected into gain amplifier dielectric rod 11 by Transflective mirror 10, and gain amplifier is situated between
The Distribution Pattern that formation is successively decreased from edge to center by matter rod inverted population within 11, gain saturaition occurs strain
Change.When the double half-gauss hollow harmonic light from local oscillator level is during by the gain amplifier dielectric rod 11 of amplifier stage, double half
The light intensity of the outer wall light of gauss hollow harmonic light is more weak, and the degree of saturation of gain media is relatively low, and outer wall light obtains largely
Amplification；The light intensity of the inwall light of double half-gauss hollow harmonic light is relatively strong, and the degree of saturation of gain media is higher, inwall light
Obtain lesser degree of amplification.Here it is so-called sizing is amplified, the sizing of anti-double half-gauss hollow pump light is i.e. used to amplify double half
Gauss hollow harmonic light, finally gives the hollow laser of double square.
The present invention has not only obtained the hollow laser of double square, and, it is to be obtained, therefore, compared to existing skill by laser instrument self
Art, present configuration is simple, device is compact, the overall advantage of lower cost of device.
It addition, improve local oscillator pumping 1 power and use two pump light sources in amplifier stage, purpose is provided to improve the present invention
The output of the hollow laser instrument of double square.
Accompanying drawing explanation
Fig. 1 is double half-gauss hollow beam intensity curve chart.Fig. 2 is anti-double half-gauss hollow beam intensity curve chart.
Fig. 3 is that existing quasi-double half-gauss hollow laser beam forms apparatus structure schematic diagram.Fig. 4 is that double square hollow beam intensity distributions is bent
Line chart.Fig. 5 is spherical aberration regulation and control Re Wen district and laser sizing amplification double square hollow laser structure schematic diagram, this figure of the present invention
Simultaneously as Figure of abstract.Fig. 6 is a kind of spherical aberration regulation and control Re Wen district that can improve optical output power and the laser sizing of the present invention
Amplify double square hollow laser structure schematic diagram.Fig. 7 is the Dynamic stable region schematic diagram of Ping-flat chamber difference order mode, in figure:
I represents the first Dynamic stable region of low order zlasing mode, and II represents the second Dynamic stable region of low order zlasing mode, curve 1 region
For TEM00The Dynamic stable region of pattern, curve 2 region is TEM01*The Dynamic stable region of pattern, curve 3 region is TEM10
The Dynamic stable region of pattern, some a is the operating point set.Fig. 8 is Gaussian beam to be converted to anti-double the highest by Conical Lenses group
This hollow beam process schematic.
Detailed description of the invention
As shown in Figure 5, Figure 6, the hollow laser instrument of described double square is made up of local oscillator level and amplifier stage.
In local oscillator level, local oscillator pumping 1, focusing coupling mirror group 2, the chamber mirror 3 that is all-trans, local oscillator gain media rod 4, auxiliary lens
5, local oscillator output coupling mirror 6 optics arranged in co-axial alignment successively.Local oscillator pumping 1 uses LD, pump wavelength 808nm, power 30W.
Focus on coupling mirror group 2 to be made up of two planoconvex lenss, and convex surface is relative；Planoconvex lens focal length 50mm, each planoconvex lens
Two minute surfaces are plated with the transmitance 808nm anti-reflection film more than 99.5%.The chamber mirror 3 that is all-trans is planoconcave lens, and concave surface is towards local oscillator
Gain media rod 4；Chamber mirror 3 radius of curvature that is all-trans is 100mm, and two minute surfaces of planoconcave lens are plated with transmitance more than 99.5%
808nm anti-reflection film, the concave mirror surface of planoconcave lens be also coated with reflectance more than 99.9% 1064nm high-reflecting film.Local oscillator gain
Dielectric rod 4 is the Nd:YAG crystal bar of Φ 5 × 10mm, and two end faces of crystal bar are plated with transmitance and are more than 99.9%
1064nm anti-reflection film.When the output of local oscillator pumping 1 is 10～40W, auxiliary lens 5 is plus lens；The song of plus lens
Rate radius is 150mm, and two minute surfaces are coated with the transmitance 1064nm anti-reflection film more than 99.9%.Output when local oscillator pumping 1
When power is 41～80W, auxiliary lens 5 is minus lens；The radius of curvature of minus lens is-100mm, and two minute surfaces are coated with and pass through
The rate 1064nm anti-reflection film more than 99.9%.Output coupling mirror 6 is plane mirror；Plane mirror is towards the mirror of local oscillator gain media rod 4
Face is coated with the 1064nm part that transmitance is 10% and passes through film, and another minute surface is coated with the transmitance 1064nm more than 99.9% and increases
Permeable membrane.
In amplifier stage, amplify pumping 7, collimating mirror group 8, Conical Lenses group 9 optics arranged in co-axial alignment successively and constitute a pump light
Source.Amplify pumping 7 and use LD, pump wavelength 808nm, power 50W.Collimating mirror group 8 is telescope；Telescope by
Positive and negative two lens composition, enlargement ratio is 4 ×, the minute surface of positive and negative two lens is plated with the transmitance 808nm more than 99.5%
Anti-reflection film.Conical Lenses group 9 is made up of the positive round axicon lens of two opposing placements；Positive round axicon lens material is ZnS crystal, and cone angle is
168 °, two minute surfaces of each positive round axicon lens are plated with the transmitance 808nm anti-reflection film more than 99.5%.Middle Transflective mirror 10
It is positioned on the optical axis of Conical Lenses group 9 outfan side, and is 45° angle with optical axis；Middle Transflective mirror 10 is plane mirror,
Two minute surfaces of plane mirror are plated with the transmitance 1064nm anti-reflection film more than 99.5%, and plane mirror is towards the mirror of Conical Lenses group 9
Face is also coated with the reflectance 808nm high-reflecting film more than 99.5%.Gain amplifier dielectric rod 11 is positioned at the light of middle Transflective mirror 10
Between reflection side and outer transmission reflecting mirror 12, outer transmission reflecting mirror 12 is vertical with the optical axis of gain amplifier dielectric rod 11；Pass through inside
Penetrating reflecting mirror 12 is plane mirror, and two minute surfaces of plane mirror are plated with the transmitance 1064nm anti-reflection film more than 99.5%；Amplify
Gain media rod 11 is the Nd:YAG crystal bar of Φ 8 × 15mm, and two end faces of crystal bar are plated with transmitance more than 99.9%
1064nm anti-reflection film.When amplifier stage uses two pump light sources, outer transmission reflecting mirror 12 and gain amplifier dielectric rod 11
Optical axis be 45° angle, be positioned on the optical axis of the Conical Lenses group 9 outfan side set up in pump light source simultaneously, and with this light
Axle is 45° angle；It is plated with transmitance as two minute surfaces of the plane mirror of the outer transmission reflecting mirror 12 in this structure to be more than
The 1064nm anti-reflection film of 99.5%, it is big that plane mirror is also coated with reflectance towards the minute surface of the Conical Lenses group 9 set up in pump light source
In the 808nm high-reflecting film of 99.5%.
Claims (5)
1. the hollow laser instrument of double square is amplified in spherical aberration regulation and control Re Wen district and laser sizing, it is characterised in that by local oscillator level with put
Big level is constituted；In local oscillator level, local oscillator pumping (1), focus on coupling mirror group (2), be all-trans chamber mirror (3), local oscillator gain media
Rod (4), auxiliary lens (5), local oscillator output coupling mirror (6) optics arranged in co-axial alignment successively；Focus on coupling mirror group (2) by two
Individual planoconvex lens is constituted, and convex surface is relative；The chamber mirror (3) that is all-trans is planoconcave lens, and concave surface is towards local oscillator gain media rod (4)；
When the output of local oscillator pumping (1) is 10～40W, auxiliary lens (5) is plus lens, defeated when local oscillator pumping (1)
Going out power when being 41～80W, auxiliary lens (5) is minus lens；Output coupling mirror (6) is plane mirror；In amplifier stage,
Amplify pumping (7), collimating mirror group (8), Conical Lenses group (9) optics arranged in co-axial alignment successively one pump light source of composition；Collimation
Mirror group (8) is telescope；Conical Lenses group (9) is made up of the positive round axicon lens of two opposing placements；Middle Transflective mirror (10)
It is positioned on the optical axis of Conical Lenses group (9) outfan side, and is 45° angle with optical axis；Gain amplifier dielectric rod (11) position
Between the luminous reflectance side and outer transmission reflecting mirror (12) of middle Transflective mirror (10), outer transmission reflecting mirror (12) with put
The optical axis of large gain dielectric rod (11) is vertical；When amplifier stage use two pump light sources time, outer transmission reflecting mirror (12) with put
The optical axis of large gain dielectric rod (11) is 45° angle, is positioned at Conical Lenses group (9) outfan set up in pump light source simultaneously
On the optical axis of side, and it is 45° angle with this optical axis；Local oscillator gain media rod (4) swashs with gain amplifier dielectric rod (11)
Ejected wave length is identical；Middle Transflective mirror (10) and outer transmission reflecting mirror (12) are high thoroughly to excitation wavelength, to amplifier stage pump light
High anti-.
The hollow laser instrument of double square the most according to claim 1, it is characterised in that local oscillator pumping (1), amplification pumping (7)
All use LD, pump wavelength 808nm.
The hollow laser instrument of double square the most according to claim 1, it is characterised in that local oscillator gain media rod (4), amplification
Gain media rod (11) all uses Nd:YAG crystal bar, local oscillator gain media rod (4) a size of Φ 5 × 10mm, amplifies and increases
Benefit dielectric rod (11) a size of Φ 8 × 15mm.
The hollow laser instrument of double square the most according to claim 1, it is characterised in that putting down as output coupling mirror (6)
Face mirror is coated with 1064nm that transmitance is 10% part through film, another minute surface towards the minute surface of local oscillator gain media rod (4)
It is coated with the transmitance 1064nm anti-reflection film more than 99.9%.
The hollow laser instrument of double square the most according to claim 1, it is characterised in that the two of composition Conical Lenses group (9)
Individual positive round axicon lens material is ZnS crystal, and cone angle is 168 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610464480.6A CN105958311B (en) | 2016-06-24 | 2016-06-24 | Spherical aberration regulates and controls the area Re Wen and the laser sizing amplification hollow laser of double square |
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|---|---|---|---|
| CN201610464480.6A CN105958311B (en) | 2016-06-24 | 2016-06-24 | Spherical aberration regulates and controls the area Re Wen and the laser sizing amplification hollow laser of double square |
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| CN105958311B CN105958311B (en) | 2019-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161854A (en) * | 2021-03-22 | 2021-07-23 | 天津大学 | Laser with switchable Gaussian mode and Laguerre-Gaussian mode |
| CN114498252A (en) * | 2021-12-30 | 2022-05-13 | 云南大学 | Hollow laser with triple-freedom-degree eigenmode |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363956A (en) * | 2008-09-23 | 2009-02-11 | 长春理工大学 | Device for forming quasi-double half-gauss hollow laser beam |
| CN101806958A (en) * | 2010-02-05 | 2010-08-18 | 华中科技大学 | Central part reconstruction method and device of unstable resonator laser annular beam |
| CN101950915A (en) * | 2010-09-07 | 2011-01-19 | 长春理工大学 | Resonant cavity capable of obtaining hollow laser beams |
| CN103594918A (en) * | 2013-11-04 | 2014-02-19 | 华中科技大学 | Method and device for outputting hollow laser beam |
| CN104950455A (en) * | 2015-07-10 | 2015-09-30 | 长春理工大学 | Method for realizing coaxiality of inner and outer cone mirrors for producing hollow beams |
-
2016
- 2016-06-24 CN CN201610464480.6A patent/CN105958311B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101363956A (en) * | 2008-09-23 | 2009-02-11 | 长春理工大学 | Device for forming quasi-double half-gauss hollow laser beam |
| CN101806958A (en) * | 2010-02-05 | 2010-08-18 | 华中科技大学 | Central part reconstruction method and device of unstable resonator laser annular beam |
| CN101950915A (en) * | 2010-09-07 | 2011-01-19 | 长春理工大学 | Resonant cavity capable of obtaining hollow laser beams |
| CN103594918A (en) * | 2013-11-04 | 2014-02-19 | 华中科技大学 | Method and device for outputting hollow laser beam |
| CN104950455A (en) * | 2015-07-10 | 2015-09-30 | 长春理工大学 | Method for realizing coaxiality of inner and outer cone mirrors for producing hollow beams |
Non-Patent Citations (2)
| Title |
|---|
| HUI-LONG LIU ET AL.: "The diffraction propagation properties of double-half inverse Gaussian hollow beams", 《OPTICS&LASER TECHNOLOGY》 * |
| 施建珍等: "用波晶片产生可调矩形空心光束", 《光学学报》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113161854A (en) * | 2021-03-22 | 2021-07-23 | 天津大学 | Laser with switchable Gaussian mode and Laguerre-Gaussian mode |
| CN114498252A (en) * | 2021-12-30 | 2022-05-13 | 云南大学 | Hollow laser with triple-freedom-degree eigenmode |
| CN114498252B (en) * | 2021-12-30 | 2023-10-24 | 云南大学 | Hollow laser with triple degree of freedom eigenmodes |
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| CN105958311B (en) | 2019-01-04 |
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