CN203339467U - Radial polarization light beam laser - Google Patents
Radial polarization light beam laser Download PDFInfo
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- CN203339467U CN203339467U CN2013203534730U CN201320353473U CN203339467U CN 203339467 U CN203339467 U CN 203339467U CN 2013203534730 U CN2013203534730 U CN 2013203534730U CN 201320353473 U CN201320353473 U CN 201320353473U CN 203339467 U CN203339467 U CN 203339467U
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- polarized light
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Abstract
The utility model discloses a radial polarization light beam laser, comprising an output cavity mirror (101), a pumping source (102), a gain medium (103), and a symmetric polarization selection assembly (104). The output cavity mirror is a mirror which enables partial reflection and partial transmission of light waves emitted from the laser, and the output cavity mirror is used for coupling and outputting one part of laser light generated by the laser and reflecting the other part of the light back to the laser for maintaining laser resonance. The pump source is used for providing energy to the gain medium of the laser and exciting the gain medium to jump to a high energy level. The radial polarization light beam laser structurally comprises the pumping source used for providing energy for resonant vibration of the laser, the gain medium, and the symmetric polarization selection assembly, wherein the symmetric polarization selection assembly comprises a cylindrical polarization film, a cylindrical reflecting mirror, and a conic reflector. The cylindrically symmetrical polarizing of light beams can be realized through the symmetric polarization selection assembly, thereby realizing the output of radial polarization laser light beams. The radial polarization light beam laser of the utility model is clear in structure, high in stability, and capable of realizing the high-power output.
Description
Technical field
The utility model relates to the technical field of laser, particularly a kind of radial polarized light beam laser, and it is to select based on symmetric polarized the radial polarized light beam laser of realizing.
Background technology
The radial polarisation state is a kind of particular polarization state that is different from common polarization characteristic, and its electric field is symmetrical around the beam center spoke shape, as shown in Figure 3.The particular polarization distribution character of radial polarized light beam makes it in a lot of fields, special advantage be arranged, as laser optical tweezer, and laser processing, near field optic, HIGH-DENSITY OPTICAL STORAGE.
The radial polarized light beam generator of report is the form of passive conversion mostly both at home and abroad at present, the radial polarized light beam laser of indivedual active form also is based on micro-structural metal grating or the space phase modulator of high price, structure realizes that difficulty is high and with high costs, when realizing high-energy output, also is subject to certain restrictions.
Summary of the invention
The technical problems to be solved in the utility model is: in order to overcome defect described in background technology, the utility model provide a kind of simple in structure and, cost is lower and be convenient to realize the radial polarized light beam laser of high-power output.The utility model is the radial polarized light beam laser that utilizes conic reflector and the symmetrical inclined to one side mode of tubular polarizing coating to realize.
The technical scheme in the invention for solving the above technical problem is: a kind of radial polarized light beam laser comprises: output cavity mirror, pumping source and gain media and symmetric polarized are selected assembly;
Described output cavity mirror is the minute surface that the light wave for laser emission is the transmission of part reflecting part, laser part coupling output that it produces laser, and another part light is reflected back laser and maintains laser resonance;
Described pumping source is for the laser gain medium provides energy, excites gain media to the high level transition;
Described gain media can realize that energy level transition produces laser in the pumping source excitation;
Described symmetric polarized selects assembly to consist of the polarization mode of tubular and speculum and conic reflector, selects required radial polarisation light.
Further, tubular polarizing coating and speculum be with the assembling of the form of donut, and polarizing coating is in the inboard of speculum, conic reflector be positioned at tubular polarizing coating and speculum around the center of circle; The polarization direction of its selective light of different directions at circumference also is combined into radial polarisation light.
Further, a folk prescription of described tubular polarizing coating is parallel to the axis with conic reflector.
Further, described tubular speculum inwall can reflector laser.
Further, described conic reflector is the reflection device that cone angle is 45 degree conical surface polishing plated films, and it is parallel with its bottom surface that the light that is parallel to its axis is reflected rear exit direction, be parallel to the light reflection of its bottom surface after exit direction parallel with axis.
Further, described polarizing coating select to differ from described folk prescription to, perpendicular to the axis of conic reflector or composite type designed folk prescription to, realize differing from other particular polarization light beams of radial polarisation light, select angle light beam or mixed polarized light beam.
Further, described composite type designed folk prescription to, the polarization direction at tubular polarizing coating every place on circumference according to demand piecemeal adjusted and designed its rise folk prescription to.
Further, described pumping source is for the laser gain medium provides energy, excites gain media to the high level transition, and its way of realization is lamp pumping, laser pumping or electric pump.
Further, described gain media can realize that energy level transition produces laser in the pumping source excitation, and its way of realization is semiconductor, crystal, doped-glass, atomic gas, molecular gas, ionized gas or dye molecule.
Principle of the present utility model is:
A kind of radial polarized light beam laser, its structure comprises: output cavity mirror, pumping source and gain media and symmetric polarized are selected assembly; Described output cavity mirror is the minute surface that the light wave for laser emission is the transmission of part reflecting part.Its function is the laser part coupling output that laser is produced, and another part light is reflected back laser and maintains laser resonance.Described pumping source is for the laser gain medium provides energy, excites gain media to the high level transition.Its way of realization has multiple, common are the lamp pumping, laser pumping and electric pump etc.Described gain media can realize that energy level transition produces laser in the pumping source excitation, and its way of realization has multiple, common are He-Ne mist, ruby, dye molecule etc.Described symmetric polarized selects assembly to consist of the polarization mode of tubular and speculum and conic reflector, and it can and be combined into radial polarisation light in the polarization direction of the different directions selective light of circumference.Described tubular polarizing coating to play folk prescription parallel to the axis with conic reflector, the tubular speculum is characterized in that inwall can reflector laser, tubular polarizing coating and speculum are with the form assembling of donut, polarizing coating is in the inboard of speculum; Described conic reflector is the reflection device that cone angle is 45 degree conical surface polishing plated films, be arranged on tubular polarizing coating and speculum around the center of circle.The laser parallel produced by gain media, in the incident of conic reflector axis, reflects exit direction and conic reflector bottom surface parallel and radial directive tubular polarizing coating on the round symmetric position of the conic reflector conical surface; Laser is after the tubular polarizing coating rises partially, and polarization direction unanimously all is parallel to the axis of conic reflector.Laser again sees through tubular polarizing coating polarization direction and remains unchanged after the tubular mirror reflects, converges the directive conic reflector, and due to the circular symmetry of conic reflector, after reflection, the polarization of laser becomes radial polarisation.Exit direction described tubular polarizing coating parallel with the conic reflector axis also can select to differ from described folk prescription to, same polarization direction or composite type design polarization direction, can realize differing from other particular polarization light beams of radial polarisation light, for example a folk prescription of tubular polarizing coating is vertical to the axis with conic reflector can obtain the output of angle light beam.Described composite type designed folk prescription to, the polarization direction at tubular polarizing coating every place on circumference can be inconsistent, can according to the output demand carry out the piecemeal adjustment and design its rise folk prescription to.
The utility model advantage compared with prior art is:
1), the polarization of the utility model utilization with symmetrical structure select assembly to realize the radial polarisation Laser output, it is simple in structure, principle is clear, cost is lower, easily realizes; More easily realize in addition high power laser light output.
2), the utility model utilizes the element of high damage threshold, more easily realizes high power laser light output.
3), the utility model is introduced extra tune Q, locked mode element and also can be realized pulse laser output.
The accompanying drawing explanation
Fig. 1 is the utility model radial polarized light beam laser schematic diagram;
Fig. 2 is that the utility model symmetric polarized is selected the assembly schematic diagram;
The polarisation distribution that Fig. 3 is radial polarized light beam, wherein arrow logo is polarization direction.
Embodiment
Describe the utility model embodiment in detail below in conjunction with accompanying drawing.
As shown in Figure 1: the radial polarized light beam laser comprises: output cavity mirror 101, and pumping source 102, gain media 103 and symmetric polarized are selected assembly 104.The direction of propagation and the path of straight arrows sign laser.
The level crossing that described output cavity mirror 101 is the transmission of part reflecting part, its reflectivity (transmissivity) can require to carry out plated film design (1%-99%) according to laser output, for the coupling of the radial polarisation laser part by producing output, the part return laser light maintains laser resonance in chamber.
Described pumping source 102 forms laser for laser provides energy by gain media 103 excite transitions.Described pumping source can have multiple way of realization, for example lamp pumping, laser pumping and some pumping etc.There is symmetrical radial polarized light beam owing to the invention reside in output, so utilize pumping source 102 forms around gain media to be conducive to the laser realization.In like manner, the gain media 103 with cylindrical symmetry also is conducive to the realization of laser, and in addition the eigenmodes of post symmetrical wave guide structure and radial polarized light beam are complementary.
It is key points of the present invention that described symmetric polarized is selected assembly 103, and as shown in Figure 2, symmetric polarized selects assembly 103 to be comprised of conic reflector 201, tubular polarizing coating 202 and tubular speculum.Wherein the cone angle of conic reflector 201 is 45 degree, and the laser reflection that is parallel to the incident of z axle that gain media 103 can be produced becomes in the x-y face radial emitting laser centered by conic reflector 201 axis; Otherwise, also the laser reflection be incident in the x-y face on its conical surface can be become be parallel to the z axle.From the radial emitting laser process of conic reflector 201, folk prescription all is parallel to the z axle to the tubular polarizing coating 202 rear polarizer directions that all are parallel to the z axle, as black arrow sign in Fig. 2, after 203 reflections of tubular speculum, again by tubular polarizing coating 202 polarization directions, remain unchanged, again through conic reflector 201, be reflected into along z axle polarization laser radially, as black arrow sign in Fig. 2, see through output cavity mirror 101 by portion of energy output after gain media 103 amplifies, the dump energy reflection maintains laser resonance.
Innovation of the present utility model is: designed unique symmetric polarized and selected assembly, carry out the polarization selection in laser chamber, realized being output as the laser of radial polarized light beam.It is simple in structure, and principle is distinct, and cost is lower, and more easily realizes high-power output.
Can introduce in addition the tune Q such as extra semiconductor saturable absorber, dye molecule thin slice and locked mode element and can realize pulse laser output on basis of the present invention.
On basis of the present invention, can be adjusted the polarization direction of the tubular polarizing coating in the symmetric polarized selectors in addition, be differed from other particular polarization light beams of radial polarized light beam with output.
Although described the utility model and advantage thereof in detail, should be appreciated that and can carry out various variations, replacement and transformation in the situation that do not deviate from spirit and scope of the present utility model defined by the appended claims.
Claims (9)
1. a radial polarized light beam laser, is characterized in that, comprising: output cavity mirror (101), pumping source (102) and gain media (103) and symmetric polarized are selected assembly (104);
Described output cavity mirror is the minute surface that the light wave for laser emission is the transmission of part reflecting part, laser part coupling output that it produces laser, and another part light is reflected back laser and maintains laser resonance;
Described pumping source is for the laser gain medium provides energy, excites gain media to the high level transition;
Described gain media can realize that energy level transition produces laser in the pumping source excitation;
Described symmetric polarized selects assembly to consist of the polarization mode of tubular and speculum and conic reflector, selects required radial polarisation light.
2. a kind of radial polarized light beam laser according to claim 1, it is characterized in that, tubular polarizing coating and speculum be with the assembling of the form of donut, and polarizing coating is in the inboard of speculum, conic reflector be positioned at tubular polarizing coating and speculum around the center of circle; The polarization direction of its selective light of different directions at circumference also is combined into radial polarisation light.
3. a kind of radial polarized light beam laser according to claim 2, is characterized in that, a folk prescription of described tubular polarizing coating is parallel to the axis with conic reflector.
4. a kind of radial polarized light beam laser according to claim 2, is characterized in that, described tubular speculum inwall can reflector laser.
5. a kind of radial polarized light beam laser according to claim 2, it is characterized in that, described conic reflector is the reflection device that cone angle is 45 degree conical surface polishing plated films, it is parallel with its bottom surface that the light that is parallel to its axis is reflected rear exit direction, be parallel to the light reflection of its bottom surface after exit direction parallel with axis.
6. a kind of radial polarized light beam laser according to claim 3, it is characterized in that, described polarizing coating select to differ from described folk prescription to, perpendicular to the axis of conic reflector or composite type designed folk prescription to, realization differs from other particular polarization light beams of radial polarisation light, selects angle light beam or mixed polarized light beam.
7. a kind of radial polarized light beam laser according to claim 6, is characterized in that, described composite type designed folk prescription to, the polarization direction at tubular polarizing coating every place on circumference according to demand piecemeal adjusted and designed its rise folk prescription to.
8. a kind of radial polarized light beam laser according to claim 1, is characterized in that, described pumping source is for the laser gain medium provides energy, excites gain media to the high level transition, and its way of realization is lamp pumping, laser pumping or electric pump.
9. a kind of radial polarized light beam laser according to claim 1, it is characterized in that, described gain media can realize that energy level transition produces laser in the pumping source excitation, and its way of realization is semiconductor, crystal, doped-glass, atomic gas, molecular gas, ionized gas or dye molecule.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203534730U CN203339467U (en) | 2013-06-19 | 2013-06-19 | Radial polarization light beam laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203534730U CN203339467U (en) | 2013-06-19 | 2013-06-19 | Radial polarization light beam laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326224A (en) * | 2013-06-19 | 2013-09-25 | 中国科学技术大学 | Radial polarization beam laser |
| CN105022110A (en) * | 2014-04-17 | 2015-11-04 | 大族激光科技产业集团股份有限公司 | Reflective diffraction grating mirror and high-power laser |
| CN111934166A (en) * | 2020-09-08 | 2020-11-13 | 哈尔滨市科佳通用机电股份有限公司 | Linear laser light source and shooting equipment |
| CN116826521A (en) * | 2023-08-31 | 2023-09-29 | 中国航天三江集团有限公司 | Reflective atomic air chamber and preparation method thereof |
-
2013
- 2013-06-19 CN CN2013203534730U patent/CN203339467U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326224A (en) * | 2013-06-19 | 2013-09-25 | 中国科学技术大学 | Radial polarization beam laser |
| CN103326224B (en) * | 2013-06-19 | 2016-02-03 | 中国科学技术大学 | A kind of radial polarization beam laser |
| CN105022110A (en) * | 2014-04-17 | 2015-11-04 | 大族激光科技产业集团股份有限公司 | Reflective diffraction grating mirror and high-power laser |
| CN111934166A (en) * | 2020-09-08 | 2020-11-13 | 哈尔滨市科佳通用机电股份有限公司 | Linear laser light source and shooting equipment |
| CN116826521A (en) * | 2023-08-31 | 2023-09-29 | 中国航天三江集团有限公司 | Reflective atomic air chamber and preparation method thereof |
| CN116826521B (en) * | 2023-08-31 | 2023-11-28 | 中国航天三江集团有限公司 | Reflective atomic air chamber and preparation method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131211 Termination date: 20160619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |