CN106785872A - Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping - Google Patents
Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping Download PDFInfo
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- CN106785872A CN106785872A CN201510834679.9A CN201510834679A CN106785872A CN 106785872 A CN106785872 A CN 106785872A CN 201510834679 A CN201510834679 A CN 201510834679A CN 106785872 A CN106785872 A CN 106785872A
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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
- H01S3/106—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
- H01S3/107—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 electro-optic devices, e.g. exhibiting Pockels or Kerr effect
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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
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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
- H01S3/101—Lasers provided with means to change the location from which, or the direction in which, laser radiation is emitted
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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
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Abstract
The invention discloses a kind of Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping, including pumping source, light direction is exported and with the condenser lens being sequentially placed of optical axis, biaxial crystal, gain medium and laser output mirror along the pumping source；Described biaxial crystal is located within one times of focal length of condenser lens.Pump light is converted to annular pump light by the present invention, conversion efficiency is close to 100%, high conversion efficiency, so that pump light is high to light-light efficiency during output Laguerre-Gauss laser, and conversion equipment does not have particular/special requirement to temperature environment, without heating/cooling device, strong adaptability, with simple structure, easily realize the characteristics of.
Description
Technical field
It is more particularly to a kind of based on biaxial crystal conical refraction annular optical pumping the invention belongs to solid state laser technology
High efficiency single order or higher order Laguerre-Gaussian beam solid state laser.
Background technology
In recent years, column vector beam and vortex beams are more and more paid close attention to by people.Their common feature is
The center intensity for being its hot spot is zero and its amplitude can use single order or the Laguerre-Gauss of higher order
(Laguerre-Gaussian, LG) function is characterized.The Typical Representative of column vector beam includes radial polarisation laser
With angular polarization laser, the radius or tangential direction of its electric field intensity sensing hot spot cross section are deposited in spot center
Polarization singular point thus center amplitude be zero.Vortex beams refer to have spirality Wave-front phase along optical propagation direction
Light beam, there is phase singularity in spot center, this characteristic causes the light beam to have orbital angular momentum.Current column
Vector beam and vortex beams have been widely used for atom cooling and imprison, particle guiding and capture, high-resolution show
It is micro- to wait key areas.
Producing the method for column vector beam or vortex beams includes passive means and active method.Passive means is mainly utilized
Various optical elements carry out shaping to laser beam outside chamber, and these devices include that spatial light modulator, spatial light are converted
Delayer, less fundamental mode optical fibre etc..But utilize the method obtain column vector beam or vortex beams power compared with
Low (the main damage threshold by device used is limited), and beam quality is poor.Active method mainly uses laser
Device directly exports column vector beam or vortex beams, with the advantage such as good beam quality and power be high.Active method
Generally need to place axially symmetry polarization element or diffraction optical element in laser chamber to force laser to produce
Vector light beam or vortex beams vibrate, therefore optical quality to chamber interior element has higher requirements, so as to lead
Cause cost increase.
But can avoid using intracavity modeselecting element using the mode of annular optical pumping.Annular pump light-pumped solid swashs
Light device, refers to the Laguerre-Gaussian beam generation in gain medium annular pump light and single order or higher order
Spatial model match, by the selection to Transverse mode in chamber make laser output single order or higher order Laguerre-
Gaussian beam.In the method, annular pump light beam is the superposition of various different transverse modes, and brightness is low, direction
Property is poor, it is impossible to carry out spatial well, but can then be produced when using its light-pumped solid state laser high power,
The Laguerre-Gauss light of high light beam quality.The method of annular pump light is produced to be coupled including multimode fibre defocus at present
Method (Chin.Opt.Lett., Vol.13No.3,031405,2015), hollow capillary silica fibre method (Opt.
Commun., Vol.296, P.109,2013) etc..But these methods all exist to annular pump light turn in general
Inefficient problem (about 40% to 75%) is changed, so as to cause during laser output Laguerre-Gaussian beam
Overall light-light efficiency is not high.
Conversion efficiency is low during to solve the problems, such as to form annular pump light, and the present invention is proposed using biaxial crystal taper folding
The ring light for penetrating generation carrys out light-pumped solid state laser, so as to efficiently produce Laguerre-Gauss light.Biaxial crystal
Conical refraction (Proc.SPIE, Vol.6994,69940B, 2008) refers to by along crystal after laser beam focusing
Any one optical axis direction cutting biaxial crystal, when pump beam pass through biaxial crystal after can lens focus it
The intensity distribution of annular is formed afterwards, and its conversion efficiency is close to 100%.This significantly reduces utilizing other manner
Power loss during annular pump light field is formed, so as to extracted more efficiently from the gain media of solid state laser draw
The gain of Gai Er-Gaussian beam.
The content of the invention
The present invention is directed to the Laguerre-Gaussian beam solid state laser of annular optical pumping, to solve to form annular pump
The low defect of light time conversion efficiency, annular pump is converted to by conical refraction in biaxial crystal by pumping optical effective
Pu light, using its light-pumped solid state laser, so as to obtain efficient Laguerre-Gaussian beam output.
Technical solution of the invention is as follows：
A kind of Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping, its feature is to wrap
Include pumping source, along the pumping source export light direction and with the condenser lens being sequentially placed of optical axis, biaxial crystal,
Gain medium and laser output coupling mirror；Described biaxial crystal is located within one times of focal length of condenser lens.
Be also provided with quarter-wave plate between described pumping source and described condenser lens, and this four/
One wave plate and the described same optical axis of pumping source output light.
Described pumping source is to be output as linearly polarized laser, partial polarization laser, circularly polarized laser or unpolarized sharp
The laser or Optical Maser System of light.
Described biaxial crystal is the biaxial crystal cut along its any one biaxial crystal optical axis direction, its cutting
Direction and the output parallel light of pumping source.
The preceding surface of described gain medium is coated with laser high-reflecting film and pump light anti-reflection film, and rear surface is coated with sharp
Light anti-reflection film, described laser high-reflecting film is constituted as laser Input coupling mirror with described laser output coupling mirror
Laserresonator.
Described gain medium is laser crystal, laser ceramics or laser glass.
Described gain medium is located at biaxial crystal conical refraction output circle after the focus of described condenser lens
Near the most weak position of ring pump light central light strength.
Described laser output coupling mirror is the level crossing or concave mirror reflected for laser part transmissive portion.
Foregoing invention embodiment is specific as follows：
Scheme one：
A kind of Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping, its composition includes output
Light beam is the pumping source of linearly polarized light, be successively four with optical axis and along pump direction with pumping source output light/
One wave plate, condenser lens, biaxial crystal, gain medium, laser output coupling mirror.Described pumping source is
It is output as the laser or Optical Maser System of linearly polarized laser.Described quarter-wave plate has rotation regulation
Mechanical structure, causes that the polarization characteristic of the pump light for passing through becomes round polarization by rotating regulation quarter-wave plate
Light.Described biaxial crystal is the biaxial crystal along the cutting of wherein any one optical axis direction, biaxial crystal cutting institute
The optical axis direction on edge is parallel with the thang-kng optical axis direction of pump light.Here particularly point out, due to two of biaxial crystal
Optical axis direction is relevant with wavelength, and the optical axis direction of the biaxial crystal along cutting can accurately correspond to the ripple of pump light
It is long, it is also possible to not correspond to the wavelength of pump light.Described biaxial crystal be located at condenser lens latter times of focal length with
Interior position range.Described gain medium front and rear surfaces have plated film, and preceding surface coating includes that laser is high anti-
Film and pump light anti-reflection film, rear surface are coated with laser anti-reflection film, and the laser high-reflecting film that the preceding surface of gain media is coated with is made
It is that laser Input coupling mirror and laser output coupling mirror collectively form laserresonator.Described gain medium
It is laser crystal, laser ceramics, laser glass.Described gain medium is double after condenser lens focus
Near the most weak position of axialite body conical refraction output annulus pump light central light strength.Described laser output coupling mirror
It is the level crossing or concave mirror reflected for laser part transmissive portion.
Scheme two：
A kind of Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping, its composition includes output
Light beam is the pumping source of partial poolarized light, with optical axis and along pump direction is successively four points with pumping source output light
One of wave plate, condenser lens, biaxial crystal, gain medium, laser output coupling mirror.Described pumping source
It is the laser or Optical Maser System for being output as partial polarization laser.There is described quarter-wave plate rotation to adjust
The mechanical structure of section, causes that the polarization characteristic of the pump light for passing through becomes round by rotating regulation quarter-wave plate
Polarised light.Described biaxial crystal is the biaxial crystal along the cutting of wherein any one optical axis direction, and biaxial crystal is cut
Optical axis direction along cutting is parallel with the thang-kng optical axis direction of pump light.Here particularly point out, due to biaxial crystal
Two optical axis directions are relevant with wavelength, and the optical axis direction of the biaxial crystal along cutting can accurately correspond to pump light
Wavelength, it is also possible to do not correspond to the wavelength of pump light.Described biaxial crystal is located at latter times of Jiao of condenser lens
Position range within.Described gain medium front and rear surfaces have plated film, and preceding surface coating includes laser
High-reflecting film and pump light anti-reflection film, rear surface are coated with laser anti-reflection film, and the laser that the preceding surface of gain media is coated with is high anti-
Film collectively forms laserresonator as laser Input coupling mirror and laser output coupling mirror.Described laser gain
Medium is laser crystal, laser ceramics, laser glass.Described gain medium be located at condenser lens focus it
Afterwards near the most weak position of biaxial crystal conical refraction output annulus pump light central light strength.Described laser output coupling
It is the level crossing or concave mirror reflected for laser part transmissive portion to close mirror.
Scheme three：
A kind of Laguerre-Gaussian beam solid state laser based on conical refraction annular optical pumping, its composition includes output
Light beam is circularly polarized light or non-polarized light beam pumping source, with pumping source output light with optical axis and along pump direction
It is successively condenser lens, biaxial crystal, gain medium, laser output coupling mirror.Described pumping source is defeated
Go out laser or the Optical Maser System for circularly polarized laser or non-polarized Raman laser.Described biaxial crystal is along it
In the cutting of any one optical axis direction biaxial crystal, optical axis direction and pump light along biaxial crystal cutting it is logical
Light optical axis direction is parallel.Here particularly point out, because two optical axis directions of biaxial crystal are relevant with wavelength, cutting
Along the optical axis direction of biaxial crystal can accurately correspond to the wavelength of pump light, it is also possible to do not correspond to pump light
Wavelength.Described biaxial crystal is located at the position range within latter times of focal length of condenser lens.Described laser
Gain media front and rear surfaces have plated film, and preceding surface coating includes laser high-reflecting film and pump light anti-reflection film, rear surface
Laser anti-reflection film is coated with, the laser high-reflecting film that the preceding surface of gain media is coated with is used as laser Input coupling mirror and laser
Output coupling mirror collectively forms laserresonator.Described gain medium is laser crystal, laser ceramics, swashs
Light glass.Described gain medium is located at biaxial crystal conical refraction output annulus pump after condenser lens focus
Near the most weak position of Pu light center light intensity.Described laser output coupling mirror is anti-for laser part transmissive portion
The level crossing or concave mirror penetrated.
Above-mentioned three kinds of technical solutions are combined separately below, illustrate principle of the invention.
Scheme one：The pump light of linear polarization is by that can become circularly polarized light, a branch of circular polarization pump after quarter-wave plate
Pu laser is showed after lens focus by that can produce internal conical refraction after the biaxial crystal cut along any one optical axis direction
As, that is, by the way that laser can become loop laser propagation in one section of distance after biaxial crystal, by laser crystal
It is placed in whole or in part in the range of this section of loop laser output, now laser crystal and laser output coupling mirror one
Rise and just form loop laser light-pumped solid state laser, after more than laser pumping threshold value, continue to improve pumping work(
Rate, is obtained with the output of Laguerre-Gauss laser after output coupling mirror.
Scheme two：The pump light of partial polarization by after quarter-wave plate adjust quarter-wave plate quick shaft direction,
Pump light can be made to become non-polarized light, a branch of unpolarized pumping laser is after lens focus by along any one light
Can produce internal conical refraction phenomenon after the biaxial crystal of direction of principal axis cutting, that is, by after biaxial crystal one section away from
Can become loop laser from interior laser to propagate, laser crystal is placed in what this section of loop laser was exported in whole or in part
In the range of, now laser crystal just forms loop laser light-pumped solid state laser together with laser output coupling mirror,
After laser pumping threshold value, continue improve pump power, be obtained with after output coupling mirror Laguerre-
Gauss laser is exported.
Scheme three：Circular polarization or unpolarized pump light through lens focus, then by along any one optical axis
Internal conical refraction phenomenon can be produced after the biaxial crystal of direction cutting, that is, by the distance after biaxial crystal at a section
Interior laser can become loop laser propagation, and laser crystal is placed in this section of model of loop laser output in whole or in part
In enclosing, now laser crystal just forms loop laser light-pumped solid state laser together with laser output coupling mirror, super
Cross after laser pumping threshold, continue to improve pump power, Laguerre-height is obtained with after output coupling mirror
This laser is exported.
The invention has the advantages that：
1st, pump light is converted to by annular pump light by the conical refraction of biaxial crystal, conversion efficiency close to
100%, high conversion efficiency, so that pump light is high to light-light efficiency during output Laguerre-Gauss laser；
2nd, pump light is converted to by annular pump light by biaxial crystal conical refraction, simple structure is easily realized；
3rd, pump light is converted to by annular pump light by biaxial crystal conical refraction, there is no special wanting to temperature environment
Ask, without heating/cooling device, device strong adaptability；
4th, the present invention uses end pump coupled system, the laser high-reflecting film that the preceding surface of gain medium is coated with
Laser output coupling mirror constitutes average chamber or flat-concave cavity, can obtain high-quality Laguerre-Gaussian beam output.
Brief description of the drawings
Fig. 1 is the first of Laguerre-Gaussian beam solid state laser of the present invention based on conical refraction annular optical pumping
Embodiment schematic diagram.
Fig. 2 is the second of Laguerre-Gaussian beam solid state laser of the present invention based on conical refraction annular optical pumping
Embodiment schematic diagram.
Fig. 3 is the 3 of Laguerre-Gaussian beam solid state laser of the present invention based on conical refraction annular optical pumping
Embodiment schematic diagram.
In figure, 1- pumping sources, 2- quarter-wave plates, 3- condenser lenses, 4- biaxial crystals, 5- laser gains are situated between
Matter, 6- laser output coupling mirrors.
Specific embodiment
Three kinds of scheme implementation methods of the invention are illustrated below in conjunction with institute's drawings and Examples.
Embodiment 1：
With reference to schematic diagram 1, a kind of high efficiency single order or higher order based on biaxial crystal conical refraction annular optical pumping
Laguerre-Gaussian beam solid state laser, including output beam for linearly polarized light pumping source 1, quarter-wave
Piece 2, condenser lens 3, biaxial crystal 4, gain medium 5 and laser output mirror 6, wherein quarter-wave
Piece 2, condenser lens 3, biaxial crystal 4, gain medium 5 and laser output mirror 6 are that line is inclined with output beam
Shake light pumping source 1 the same optical axis of pump light.
, by becoming circular polarization pump light after quarter-wave plate 2, circle is inclined afterwards for the linearly polarized light that pumping source 1 sends
The pump light that shakes produces conical refraction phenomenon after passing through biaxial crystal 4 after the focusing of condenser lens 3, in biaxial crystal
A segment distance inside-pumping light after 4 can be changed into the propagation of annular pump light, and all or part of of laser crystal 5 is placed in
Within this segment distance, such laser crystal 5 just constitutes annular optical pumping with laser output coupling mirror 6 below
Solid state laser, after pump light reaches threshold value generation laser output, continues to improve power, it is possible to obtain drawing lid
That-gauss laser beam is exported.
Embodiment 2：With reference to schematic diagram 2, a kind of high efficiency one based on biaxial crystal conical refraction annular optical pumping
Rank or the Laguerre-Gaussian beam solid state laser of higher order, including output beam are the pumping source of partial poolarized light
1st, quarter-wave plate 2, condenser lens 3, biaxial crystal 4, gain medium 5 and laser output mirror 6,
Wherein quarter-wave plate 2, condenser lens 3, biaxial crystal 4, gain medium 5 and laser output coupling mirror
6 is the same optical axis of pump light of the pumping source 1 of partial poolarized light with output beam.
The partial poolarized light that pumping source 1 sends is by after quarter-wave plate 2, adjusting quarter-wave plate fast axis side
To causing pump light to become unpolarized pump light, unpolarized pump light after the focusing of condenser lens 3 by passing through double afterwards
Conical refraction phenomenon is produced after axialite body 4, the segment distance inside-pumping light after biaxial crystal 4 can be changed into annular pump
Pu light propagates, and laser crystal 5 is placed within this segment distance in whole or in part, such laser crystal 5 with below
Laser output coupling mirror 6 just constitute the solid state laser of annular optical pumping, reach threshold value and produce in pump light and swash
After light output, continue to improve power, it is possible to obtain the output of Laguerre-Gauss laser beam.
Embodiment 3：With reference to schematic diagram 3, a kind of is the high efficiency based on biaxial crystal conical refraction annular optical pumping
The Laguerre-Gaussian beam solid state laser of single order or higher order, including output beam is circularly polarized light or non-inclined
Shake beam pumping source 1, condenser lens 3, biaxial crystal 4, gain medium 5 and laser output coupling mirror 6,
Wherein condenser lens 3, biaxial crystal 4, gain medium 5 and laser output mirror 6 are round inclined with output beam
The same optical axis of the pump light of light or non-polarized light beam pumping source 1 that shakes.
The unpolarized pump light that pumping source 1 sends is focused on by condenser lens 3, is then produced by after biaxial crystal 4
Raw conical refraction phenomenon, the segment distance inside-pumping light after biaxial crystal 4 can be changed into the propagation of annular pump light, swash
Luminescent crystal 5 is placed within this segment distance in whole or in part, such laser crystal 5 and laser output coupling below
The solid state laser that mirror 6 just constitutes annular optical pumping is closed, after pump light reaches threshold value generation laser output, after
It is continuous to improve power, it is possible to obtain the output of Laguerre-Gauss laser beam.
Biaxial crystal 4 in above-mentioned 3 embodiments is the biaxial crystal cut along its any one optical axis direction,
Thang-kng optical axis direction of the optical axis direction along the cutting of biaxial crystal 4 respectively with the pump light of pumping source is parallel.Due to
Two optical axis directions of biaxial crystal 4 are relevant with wavelength, and the optical axis direction of the biaxial crystal 4 along cutting can be with standard
Really corresponding to the wavelength of pump light, it is also possible to do not correspond to the wavelength of pump light.
Gain medium 5 can be laser crystal, such as the yag crystal, or laser of neodymium-doped
Glass or laser ceramics.
The preceding surface of gain medium 5 is coated with pump light anti-reflection film and laser high-reflecting film, and it is anti-reflection that rear surface is coated with laser
Film, the laser high-reflecting film of plated surface collectively forms the present invention and swashs with laser output coupling mirror 6 before gain medium 5
The laserresonator of light device.
Laser output coupling mirror 6 is the level crossing or concave mirror reflected for laser part transmissive portion, for swashing
Light output.
Claims (8)
1. it is a kind of based on conical refraction annular optical pumping Laguerre-Gaussian beam solid state laser, it is characterised in that
Including pumping source (1), along the pumping source export light direction and with the condenser lens (3) being sequentially placed of optical axis,
Biaxial crystal (4), gain medium (5) and laser output coupling mirror (6)；Described biaxial crystal (4)
Within one times of focal length of condenser lens (3).
2. the Laguerre-Gaussian beam solid based on conical refraction annular optical pumping according to claim 1 swashs
Light device, it is characterised in that be additionally provided with four points between described pumping source (1) and described condenser lens (3)
One of wave plate (2), and the quarter-wave plate (2) and the described same optical axis of pumping source output light.
3. the Laguerre-Gaussian beam based on conical refraction annular optical pumping according to claim 1 and 2 is consolidated
Body laser, it is characterised in that described pumping source (1) be output as linearly polarized laser, partial polarization laser,
The laser or Optical Maser System of circularly polarized laser or non-polarized Raman laser.
4. the Laguerre-Gaussian beam based on conical refraction annular optical pumping according to claim 1 and 2 is consolidated
Body laser, it is characterised in that described biaxial crystal (4) is along its any one biaxial crystal optical axis direction
The output parallel light of the biaxial crystal of cutting, its cut direction and pumping source.
5. the Laguerre-Gaussian beam based on conical refraction annular optical pumping according to claim 1 and 2 is consolidated
Body laser, it is characterised in that the preceding surface of described gain medium (5) is coated with laser high-reflecting film and pumping
Light anti-reflection film, rear surface is coated with laser anti-reflection film, and described laser high-reflecting film is used as laser Input coupling mirror and institute
The laser output coupling mirror stated constitutes laserresonator.
6. the Laguerre-Gaussian beam based on conical refraction annular optical pumping according to claim 1 and 2 is consolidated
Body laser, it is characterised in that described gain medium (5) is laser crystal, laser ceramics or laser glass
Glass.
7. the Laguerre-Gaussian beam based on conical refraction annular optical pumping according to claim 1 and 2 is consolidated
Body laser, it is characterised in that Jiao of the described gain medium (5) positioned at described condenser lens (3)
After point near the most weak position of biaxial crystal conical refraction output annulus pump light central light strength.
8. the Laguerre-Gaussian beam based on conical refraction annular optical pumping according to claim 1 and 2 is consolidated
Body laser, it is characterised in that described laser output coupling mirror (6) is reflected for laser part transmissive portion
Level crossing or concave mirror.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108023267A (en) * | 2017-12-11 | 2018-05-11 | 中国科学院上海光学精密机械研究所 | High-order Laguerre-Gaussian beam solid state laser |
| CN114284849A (en) * | 2021-12-30 | 2022-04-05 | 云南大学 | Adjustable vortex phase orthogonal cylindrical vector laser based on zoom hollow optical pump |
| CN114498272A (en) * | 2021-12-16 | 2022-05-13 | 深圳大学 | Intermediate infrared vector vortex optical rotation generating device and method |
| CN115579719A (en) * | 2022-09-29 | 2023-01-06 | 北京理工大学 | Single-frequency vortex laser |
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| CN102570262A (en) * | 2012-02-29 | 2012-07-11 | 中国科学院上海光学精密机械研究所 | Hollow ring-shaped light beam output solid laser and using method therefor |
| CN104701726A (en) * | 2015-03-05 | 2015-06-10 | 中国科学院上海光学精密机械研究所 | Cylindrical vector pulse laser device based on walk-off effect of birefringent crystal |
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