CN105161975A - All fiber coupled air-tight packaged small non-planar ring single frequency laser - Google Patents
All fiber coupled air-tight packaged small non-planar ring single frequency laser Download PDFInfo
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- CN105161975A CN105161975A CN201510621028.1A CN201510621028A CN105161975A CN 105161975 A CN105161975 A CN 105161975A CN 201510621028 A CN201510621028 A CN 201510621028A CN 105161975 A CN105161975 A CN 105161975A
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Abstract
The invention discloses an all fiber coupled air-tight packaged small non-planar ring cavity single frequency laser. The laser comprises a tube with an air-tight welded extraction electrode, a temperature controller, a laser crystal supporting plate, a temperature measuring device, a laser crystal, a piezoelectric ceramic, an optical window, a focusing lens, a focusing lens holder, a collimating lens, a collimating lens holder, a ceramic ferrule holder, a ceramic ferrule fixer, a tail fiber protective jacket, a pumping fiber, a quarter wave plate, a half wave plate, a wave plate holder, a coupled lens, a coupled lens holder, a position adjustor, a polarization-maintaining coupled fiber, a permanent magnet and a cover plate. A plurality of parts are integrated by metal welding after the surface of a nonmetal piece is metalized, so that miniaturization and all fiber coupling are realized, air-tight packaging is realized, and accurate temperature control and frequency tuning can be realized. The laser has the advantages of compact structure, high reliability, good temperature stability, strong environment adaptability, convenience in use and the like.
Description
Technical field
The present invention relates to photoelectric device, particularly a kind of all-fiber coupling level Hermetic Package minature solide-state laer.
Background technology
The solid state laser of diode-end-pumped, has relative to lamp pumping solid state laser that good beam quality, efficiency are high, high reliability, is coherent laser light source conventional at present.
Tradition all solid state laser, volume is relatively large, temperature stability is poor, poor mechanical property, do not possess level Hermetic Package, pump light and coupling light and carry out screw by larger mechanical structure and fix.The inapplicable higher force of traditional structure, wide temperature range applied environment, be not suitable for and require higher device to frequency stability, power stability, noiseproof feature etc.
Summary of the invention
The object of the invention is to the deficiency overcoming above-mentioned existing all solid state laser existence, a kind of set laser crystal, temperature controller, temperature measuring device, piezoelectric ceramic, pump light optical fiber are provided, protect inclined coupled fiber etc. in all-fiber coupling level Hermetic Package minature solide-state laer of one, there is volume is little, accuracy of temperature control is high, air-tightness is good, easy to use, higher mechanical performance and resisting temperature performance, long-term reliability advantages of higher.
Technical solution of the present invention is as follows:
The small-sized on-plane surface single-frequency ring laser of a kind of all-fiber coupling level Hermetic Package, feature is that its formation comprises the shell with airtight welding extraction electrode, temperature controller, laser crystal supporting bracket, temperature measuring device, laser crystal, piezoelectric ceramic, beam incident optical window, outgoing optical window, condenser lens, condenser lens frame, collimating lens, collimating lens frame, first ceramic insertion core frame, first ceramic insertion core fixture, first tail optical fiber protective sleeve, second ceramic insertion core frame, second ceramic insertion core fixture, second tail optical fiber protective sleeve, pumping optical fiber, wave plate frame, quarter-wave plate, / 2nd wave plates, coupled lens frame, coupled lens, position adjustments part, protect inclined coupled fiber 122, cover plate and permanent magnet,
Up described temperature controller, laser crystal supporting bracket, temperature measuring device, laser crystal and piezoelectric ceramic is fixed successively in the inside of described shell, by bottom surface, the permanent magnet be fixedly connected with cover plate is placed with above this piezoelectric ceramic, export to form single-frequency laser, described shell realizes level Hermetic Package by described cover plate, and this shell is also respectively equipped with beam incident optical window and outgoing optical window;
Described condenser lens is fixed on condenser lens frame endoporus, and the front facet center superposition of the focus of this condenser lens and described laser crystal, described collimating lens is fixed on collimating lens frame endoporus, the first described tail optical fiber protective sleeve, first ceramic insertion core fixture, first ceramic insertion core frame, collimating lens frame is connected successively with condenser lens frame, this condenser lens frame is fixed on described shell, the ceramic insertion core end of described pumping optical fiber is successively through the first described tail optical fiber protective sleeve and ceramic insertion core fixture, and the end face of the ceramic insertion core end of this pumping optical fiber is at the focus place of described collimating lens, described beam incident optical window, condenser lens and collimating lens coaxial,
Described quarter-wave plate and 1/2nd wave plates are arranged in described wave plate frame endoporus, described coupled lens is fixed in coupled lens frame endoporus, the second described tail optical fiber protective sleeve, second ceramic insertion core fixture, second ceramic insertion core frame, position adjustments part, coupled lens frame is connected successively with wave plate frame, and this wave plate frame is fixed on described shell, the inclined coupled fiber of described guarantor ceramic insertion core end successively through the second described tail optical fiber protective sleeve and the second ceramic insertion core fixture, the end face of the ceramic insertion core end of the inclined coupled fiber of this guarantor is at the focus place of described coupled lens, described outgoing optical window, quarter-wave plate, / 2nd wave plates and coupled lens coaxial,
Pump light transmits through described pumping optical fiber successively, collimating lens collimates, convergent lens focuses on, through beam incident optical window, focus on the front facet of laser crystal, the on-plane surface reflection vibration through laser crystal inside forms Output of laser, Output of laser is successively through outgoing optical window, quarter-wave plate and 1/2nd wave plates, focus on through coupled lens and protect inclined coupled fiber ceramic insertion core one end fiber end face, through protecting the transmission of inclined coupled fiber.Output light is become line polarisation by described quarter-wave plate, the polarization direction of 1/2nd wave plate rotational line polarisations, and an one direction is aimed at the major axis or minor axis protecting inclined coupled fiber.
The present invention compared with prior art has the following advantages:
1, the present invention by pumping optical fiber assembly and protect inclined coupled fiber assembly to be fixed on by laser welding simultaneously there is airtight welding extraction electrode shell on, reduce volume, achieve all-fiber coupling, the heat radiation of dispersion pump laser, improve the accuracy of temperature control to laser crystal, and then improve laser performance.
2, temperature controller, laser crystal, temperature measuring device, piezoelectric ceramic, permanent magnet are integrated in miniaturized airtight housing by the present invention, shell contact pin realizes real level Hermetic Package by metal solder or glass solder, cover plate by parallel seam welding or laser welding by pottery or glass solder, optical window, decrease extraneous due to the pollution to laser crystal surface such as glue volatilization, dust, steam, improve the environmental suitability of device, temperature stability and mechanical stability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the embodiment of the present invention 2;
Fig. 3 is the structural representation of the embodiment of the present invention 3;
Fig. 4 is the structural representation of the embodiment of the present invention 4;
Embodiment
Below in conjunction with embodiment and accompanying drawing, the invention will be further described.
First refer to Fig. 1, Fig. 1 is the structural representation of the embodiment of the present invention 1, as shown in the figure, the small-sized on-plane surface single-frequency ring laser of a kind of all-fiber coupling level Hermetic Package, comprise the shell 101 with airtight welding extraction electrode, cover plate, temperature controller 102, laser crystal supporting bracket 103, temperature measuring device 104, laser crystal 105, piezoelectric ceramic 106, optical window 107, condenser lens 108, condenser lens frame 109, collimating lens 110, collimating lens frame 111, ceramic insertion core frame 112, ceramic insertion core fixture 113, tail optical fiber protective sleeve 114, pumping optical fiber 115, quarter-wave plate 117, / 2nd wave plates 118, wave plate frame 116, coupled lens 120, coupled lens frame 119, position adjustments part 121 and the inclined coupled fiber 122 of guarantor.In the inside of the described shell 101 with airtight welding extraction electrode, described temperature controller 102, laser crystal supporting bracket 103, temperature measuring device 104, laser crystal 105 and piezoelectric ceramic 106 is up welded and fixed successively by bottom surface, the permanent magnet be fixedly connected with cover plate is placed with above this piezoelectric ceramic 106, export to form single-frequency laser, described shell 101 realizes level Hermetic Package by cover plate, and this shell 101 is respectively equipped with beam incident optical window 107 and outgoing optical window 107 '.
Pumping optical fiber assembly mainly comprises condenser lens 108, condenser lens frame 109, collimating lens 110, collimating lens frame 111, ceramic insertion core frame 112, ceramic insertion core fixture 113, tail optical fiber protective sleeve 113, pumping optical fiber 115.Described condenser lens 108 is fixed on condenser lens frame 109 endoporus, and the focus of condenser lens 108 and described laser crystal 105 front facet center superposition, described collimating lens 110 is fixed on collimating lens frame 111 endoporus, described ceramic insertion core frame 112 and ceramic insertion core fixture 113, ceramic insertion core frame 112 and collimating lens frame 111, collimating lens frame 111 is connected successively with condenser lens frame 109, this condenser lens frame 109 is fixed on described shell 101, the ceramic insertion core end of pumping optical fiber 115 is through described tail optical fiber protective sleeve 114 and ceramic insertion core fixture 113, make the end face of the ceramic insertion core end of pumping optical fiber 115 at the focus place of described collimating lens 110.Pumping optical fiber is through ceramic insertion core fixture and ceramic insertion core frame, by laser welding, ceramic insertion core fixture and ceramic insertion core frame are carried out being connected with fixing pumping optical fiber, collimating lens is fixed on collimating lens frame endoporus, condenser lens is fixed on condenser lens frame endoporus, by axial adjustment ceramic insertion core frame, output pumping optical fiber component ceramic insertion core one end fiber end face is adjusted in the focus of collimating lens, by laser welding, ceramic insertion core frame is connected with collimating lens frame, form collimator assembly, can detect in outside collimation performance.The collimating lens frame of collimator assembly part is inserted condenser lens frame endoporus axial adjustment position, by laser welding, collimating lens frame and condenser lens frame are fixed connection, by the both direction of plane regulating condenser lens frame, pump light is made to focus on the center of laser crystal front facet.
Protect inclined coupled fiber assembly mainly to comprise: quarter-wave plate 117,1/2nd wave plate 118, wave plate frame 116, coupled lens 120, coupled lens frame 119, position adjustments part 121, protect inclined coupled fiber 122.Described quarter-wave plate 117 and 1/2nd wave plates 118 are fixed on and are connected on wave plate frame 116 endoporus of housing, coupled lens 120 is fixed on coupled lens frame 119 endoporus, wave plate frame 116 and coupled lens frame 119, coupled lens frame 119 and position adjustments part 121, position adjustments part 121 and the second ceramic insertion core frame 112 ', second ceramic insertion core frame 112 ' and the second ceramic insertion core fixture 113 ', second ceramic insertion core fixture 113 ' and the second tail optical fiber protective sleeve 114 ' are connected and fixed successively, protect inclined coupled fiber 122 successively through the second ceramic insertion core fixture 113 ' and the second tail optical fiber protective sleeve 114 ', and protect the end face of the ceramic insertion core end of inclined coupled fiber 122 at the focus place of described coupled lens 120.Output of laser is through quarter-wave plate, / 2nd wave plates and coupled lens, be coupled into through Output of laser and protect inclined coupled fiber, protect the same pumping optical fiber of fixed form of inclined coupled fiber, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face on the focal plane of coupled lens by axial adjustment ceramic insertion core frame, by laser welding, ceramic insertion core frame and position adjustments part are fixed, the both direction of adjusting position regulating part, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face in the focus of coupled lens, realize high efficiency coupling fiber, again position adjustments part bottom surface and coupled lens frame are fixed by laser welding, be welded and fixed between coupled lens frame bottom surface and wave plate frame.
Pump light transmits through described pumping optical fiber 115 successively, collimating lens 110 collimates, convergent lens 108 focuses on, through beam incident optical window 107, focus on the front facet of laser crystal 105, nonplanar reflection vibration through laser crystal 105 inside forms Output of laser, Output of laser is successively through outgoing optical window 107 ', quarter-wave plate 117 and 1/2nd wave plates 118, focusing on through coupled lens 120 and protect inclined coupled fiber 122 ceramic insertion core one end fiber end face, exporting through protecting the transmission of inclined coupled fiber 122.Output light is become line polarisation by described quarter-wave plate 117, the polarization direction of 1/2nd wave plate 118 rotational line polarisations, and an one direction is aimed at the major axis or minor axis protecting inclined coupled fiber 122.
Fig. 2 is the structural representation of the embodiment of the present invention 2, the small-sized on-plane surface single-frequency ring laser of a kind of all-fiber coupling level Hermetic Package, comprise the shell 201 with airtight welding extraction electrode, cover plate, temperature controller 202, temperature measuring device 204, laser crystal 205, piezoelectric ceramic 206, optical window 207, condenser lens 208, condenser lens frame 209, collimating lens 230, collimating lens frame 211, ceramic insertion core frame 212, ceramic insertion core fixture 213, tail optical fiber protective sleeve 214, pumping optical fiber 215, quarter-wave plate 217, / 2nd wave plates 218, wave plate frame 216, coupled lens 220, coupled lens frame 219, position adjustments part 221 and the inclined coupled fiber 222 of guarantor.In the inside of the described shell 201 with airtight welding extraction electrode, described temperature controller 202, laser crystal supporting bracket 203, temperature measuring device 204, laser crystal 205 and piezoelectric ceramic 206 is up welded and fixed successively by bottom surface, the permanent magnet be fixedly connected with cover plate is placed with above this piezoelectric ceramic 206, export to form single-frequency laser, described shell 201 realizes level Hermetic Package by cover plate
This shell 201 is respectively equipped with beam incident optical window 207 and outgoing optical window 207 '.
Pumping optical fiber assembly mainly comprises condenser lens 208, condenser lens frame 209, collimating lens 210, collimating lens frame 211, ceramic insertion core frame 212, ceramic insertion core fixture 213, tail optical fiber protective sleeve 213, pumping optical fiber 215.Described condenser lens 208 is fixed on condenser lens frame 209 endoporus, and the focus of condenser lens 208 and described laser crystal 205 front facet center superposition, described collimating lens 210 is fixed on collimating lens frame 211 endoporus, described ceramic insertion core frame 212 and ceramic insertion core fixture 213, ceramic insertion core frame 212 and collimating lens frame 211, collimating lens frame 211 is connected successively with condenser lens frame 209, this condenser lens frame 209 is fixed on described shell 201, the ceramic insertion core end of pumping optical fiber 215 is through described tail optical fiber protective sleeve 214 and ceramic insertion core fixture 213, make the end face of the ceramic insertion core end of pumping optical fiber 215 at the focus place of described collimating lens 210.Pumping optical fiber is through ceramic insertion core fixture and ceramic insertion core frame, by laser welding, ceramic insertion core fixture and ceramic insertion core frame are carried out being connected with fixing pumping optical fiber, collimating lens is fixed on collimating lens frame endoporus, condenser lens is fixed on condenser lens frame endoporus, by axial adjustment ceramic insertion core frame, output pumping optical fiber component ceramic insertion core one end fiber end face is adjusted in the focus of collimating lens, by laser welding, ceramic insertion core frame is connected with collimating lens frame, form collimator assembly, can detect in outside collimation performance.The collimating lens frame of collimator assembly part is inserted condenser lens frame endoporus axial adjustment position, by laser welding, collimating lens frame and condenser lens frame are fixed connection, by the both direction of plane regulating condenser lens frame, pump light is made to focus on the center of laser crystal front facet.
Protect inclined coupled fiber assembly mainly to comprise: quarter-wave plate 217,1/2nd wave plate 218, wave plate frame 216, coupled lens 220, coupled lens frame 219, position adjustments part 221, protect inclined coupled fiber 222.Described quarter-wave plate 217 and 1/2nd wave plates 218 are fixed on and are connected on wave plate frame 216 endoporus of housing, coupled lens 220 is fixed on coupled lens frame 219 endoporus, wave plate frame 216 and coupled lens frame 219, coupled lens frame 219 and position adjustments part 221, position adjustments part 221 and the second ceramic insertion core frame 212 ', second ceramic insertion core frame 212 ' and the second ceramic insertion core fixture 213 ', second ceramic insertion core fixture 213 ' and the second tail optical fiber protective sleeve 214 ' are connected and fixed successively, protect inclined coupled fiber 222 successively through the second ceramic insertion core fixture 213 ' and the second tail optical fiber protective sleeve 214 ', and protect the end face of the ceramic insertion core end of inclined coupled fiber 222 at the focus place of described coupled lens 220.Output of laser is through quarter-wave plate, / 2nd wave plates and coupled lens, be coupled into through Output of laser and protect inclined coupled fiber, protect the same pumping optical fiber of fixed form of inclined coupled fiber, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face on the focal plane of coupled lens by axial adjustment ceramic insertion core frame, by laser welding, ceramic insertion core frame and position adjustments part are fixed, the both direction of adjusting position regulating part, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face in the focus of coupled lens, realize high efficiency coupling fiber, again position adjustments part bottom surface and coupled lens frame are fixed by laser welding, be welded and fixed between coupled lens frame bottom surface and wave plate frame.
Pump light transmits through described pumping optical fiber 215 successively, collimating lens 210 collimates, convergent lens 208 focuses on, through beam incident optical window 207, focus on the front facet of laser crystal 205, nonplanar reflection vibration through laser crystal 205 inside forms Output of laser, Output of laser is successively through outgoing optical window 207 ', quarter-wave plate 217 and 1/2nd wave plates 218, focusing on through coupled lens 220 and protect inclined coupled fiber 222 ceramic insertion core one end fiber end face, exporting through protecting the transmission of inclined coupled fiber 222.Output light is become line polarisation by described quarter-wave plate 217, the polarization direction of 1/2nd wave plate 218 rotational line polarisations, and an one direction is aimed at the major axis or minor axis protecting inclined coupled fiber 222.
The present embodiment difference from Example 1 is, the upper surface pottery of the temperature controller 202 in embodiment 2 can as laser crystal supporting bracket, and the bottom surface of laser crystal 205 and temperature measuring device 204 are directly welded on the upper surface pottery of temperature controller 202.
Fig. 3 is the structural representation of the embodiment of the present invention 3, the small-sized on-plane surface single-frequency ring laser of a kind of all-fiber coupling level Hermetic Package, comprise the shell 301 with airtight welding extraction electrode, cover plate, temperature controller 302, laser crystal supporting bracket 303, temperature measuring device 304, laser crystal 305, piezoelectric ceramic 306, optical window 307, condenser lens 308, condenser lens frame 309, collimating lens 330, collimating lens frame 311, ceramic insertion core frame 312, ceramic insertion core fixture 313, tail optical fiber protective sleeve 314, pumping optical fiber 315, quarter-wave plate 317, / 2nd wave plates 318, wave plate frame 316, coupled lens 320, coupled lens frame 319, position adjustments part 321 and the inclined coupled fiber 322 of guarantor.In the inside of the described shell 301 with airtight welding extraction electrode, described temperature controller 302, laser crystal supporting bracket 303, temperature measuring device 304, laser crystal 305 and piezoelectric ceramic 306 is up welded and fixed successively by bottom surface, the permanent magnet be fixedly connected with cover plate is placed with above this piezoelectric ceramic 306, export to form single-frequency laser, described shell 301 realizes level Hermetic Package by cover plate, and this shell 301 is respectively equipped with beam incident optical window 307 and outgoing optical window 307 '.
Pumping optical fiber assembly mainly comprises condenser lens 308, condenser lens frame 309, collimating lens 310, collimating lens frame 311, ceramic insertion core frame 312, ceramic insertion core fixture 313, tail optical fiber protective sleeve 313, pumping optical fiber 315.Described condenser lens 308 is fixed on condenser lens frame 309 endoporus, and the focus of condenser lens 308 and described laser crystal 305 front facet center superposition, described collimating lens 310 is fixed on collimating lens frame 311 endoporus, described ceramic insertion core frame 312 and ceramic insertion core fixture 313, ceramic insertion core frame 312 and collimating lens frame 311, collimating lens frame 311 is connected successively with condenser lens frame 309, this condenser lens frame 309 is fixed on described shell 301, the ceramic insertion core end of pumping optical fiber 315 is through described tail optical fiber protective sleeve 314 and ceramic insertion core fixture 313, make the end face of the ceramic insertion core end of pumping optical fiber 315 at the focus place of described collimating lens 310.Pumping optical fiber is through ceramic insertion core fixture and ceramic insertion core frame, by laser welding, ceramic insertion core fixture and ceramic insertion core frame are carried out being connected with fixing pumping optical fiber, collimating lens is fixed on collimating lens frame endoporus, condenser lens is fixed on condenser lens frame endoporus, by axial adjustment ceramic insertion core frame, output pumping optical fiber component ceramic insertion core one end fiber end face is adjusted in the focus of collimating lens, by laser welding, ceramic insertion core frame is connected with collimating lens frame, form collimator assembly, can detect in outside collimation performance.The collimating lens frame of collimator assembly part is inserted condenser lens frame endoporus axial adjustment position, by laser welding, collimating lens frame and condenser lens frame are fixed connection, by the both direction of plane regulating condenser lens frame, pump light is made to focus on the center of laser crystal front facet.
Protect inclined coupled fiber assembly mainly to comprise: quarter-wave plate 317,1/2nd wave plate 318, wave plate frame 316, coupled lens 320, coupled lens frame 319, position adjustments part 321, protect inclined coupled fiber 322.Described quarter-wave plate 317 and 1/2nd wave plates 318 are fixed on and are connected on wave plate frame 316 endoporus of housing, coupled lens 320 is fixed on coupled lens frame 319 endoporus, wave plate frame 316 and coupled lens frame 319, coupled lens frame 319 and position adjustments part 321, position adjustments part 321 and the second ceramic insertion core frame 312 ', second ceramic insertion core frame 312 ' and the second ceramic insertion core fixture 313 ', second ceramic insertion core fixture 313 ' and the second tail optical fiber protective sleeve 314 ' are connected and fixed successively, protect inclined coupled fiber 322 successively through the second ceramic insertion core fixture 313 ' and the second tail optical fiber protective sleeve 314 ', and protect the end face of the ceramic insertion core end of inclined coupled fiber 322 at the focus place of described coupled lens 320.Output of laser is through quarter-wave plate, / 2nd wave plates and coupled lens, be coupled into through Output of laser and protect inclined coupled fiber, protect the same pumping optical fiber of fixed form of inclined coupled fiber, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face on the focal plane of coupled lens by axial adjustment ceramic insertion core frame, by laser welding, ceramic insertion core frame and position adjustments part are fixed, the both direction of adjusting position regulating part, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face in the focus of coupled lens, realize high efficiency coupling fiber, again position adjustments part bottom surface and coupled lens frame are fixed by laser welding, be welded and fixed between coupled lens frame bottom surface and wave plate frame.
Pump light transmits through described pumping optical fiber 315 successively, collimating lens 310 collimates, convergent lens 308 focuses on, through beam incident optical window 307, focus on the front facet of laser crystal 305, nonplanar reflection vibration through laser crystal 305 inside forms Output of laser, Output of laser is successively through outgoing optical window 307 ', quarter-wave plate 317 and 1/2nd wave plates 318, focusing on through coupled lens 320 and protect inclined coupled fiber 322 ceramic insertion core one end fiber end face, exporting through protecting the transmission of inclined coupled fiber 322.Output light is become line polarisation by described quarter-wave plate 317, the polarization direction of 1/2nd wave plate 318 rotational line polarisations, and an one direction is aimed at the major axis or minor axis protecting inclined coupled fiber 322.
With the difference of embodiment 1 be in embodiment 3 according to laser crystal different pumping fine with protect inclined coupled fiber angle and be less than 90 °, the shell side contacted with pumping optical fiber is an oblique angle, for square can carry out parallel seam welding or laser welding to cover plate above shell.
Fig. 4 is the structural representation of the embodiment of the present invention 4, the small-sized on-plane surface single-frequency ring laser of a kind of all-fiber coupling level Hermetic Package, comprise the shell 401 with airtight welding extraction electrode, cover plate, temperature controller 402, laser crystal supporting bracket 403, temperature measuring device 404, laser crystal 405, piezoelectric ceramic 406, optical window 407, condenser lens 408, condenser lens frame 409, collimating lens 430, collimating lens frame 411, ceramic insertion core frame 412, ceramic insertion core fixture 413, tail optical fiber protective sleeve 414, pumping optical fiber 415, quarter-wave plate 417, / 2nd wave plates 418, wave plate frame 416, coupled lens 420, coupled lens frame 419, position adjustments part 421 and the inclined coupled fiber 422 of guarantor.In the inside of the described shell 401 with airtight welding extraction electrode, described temperature controller 402, laser crystal supporting bracket 403, temperature measuring device 404, laser crystal 405 and piezoelectric ceramic 406 is up welded and fixed successively by bottom surface, the permanent magnet be fixedly connected with cover plate is placed with above this piezoelectric ceramic 406, export to form single-frequency laser, described shell 401 realizes level Hermetic Package by cover plate, and this shell 401 is respectively equipped with beam incident optical window 407 and outgoing optical window 407 '.
Pumping optical fiber assembly mainly comprises condenser lens 408, condenser lens frame 409, collimating lens 410, collimating lens frame 411, ceramic insertion core frame 412, ceramic insertion core fixture 413, tail optical fiber protective sleeve 413, pumping optical fiber 415.Described condenser lens 408 is fixed on condenser lens frame 409 endoporus, and the focus of condenser lens 408 and described laser crystal 405 front facet center superposition, described collimating lens 410 is fixed on collimating lens frame 411 endoporus, described ceramic insertion core frame 412 and ceramic insertion core fixture 413, ceramic insertion core frame 412 and collimating lens frame 411, collimating lens frame 411 is connected successively with condenser lens frame 409, this condenser lens frame 409 is fixed on described shell 401, the ceramic insertion core end of pumping optical fiber 415 is through described tail optical fiber protective sleeve 414 and ceramic insertion core fixture 413, make the end face of the ceramic insertion core end of pumping optical fiber 415 at the focus place of described collimating lens 410.Pumping optical fiber is through ceramic insertion core fixture and ceramic insertion core frame, by laser welding, ceramic insertion core fixture and ceramic insertion core frame are carried out being connected with fixing pumping optical fiber, collimating lens is fixed on collimating lens frame endoporus, condenser lens is fixed on condenser lens frame endoporus, by axial adjustment ceramic insertion core frame, output pumping optical fiber component ceramic insertion core one end fiber end face is adjusted in the focus of collimating lens, by laser welding, ceramic insertion core frame is connected with collimating lens frame, form collimator assembly, can detect in outside collimation performance.The collimating lens frame of collimator assembly part is inserted condenser lens frame endoporus axial adjustment position, by laser welding, collimating lens frame and condenser lens frame are fixed connection, by the both direction of plane regulating condenser lens frame, pump light is made to focus on the center of laser crystal front facet.
Protect inclined coupled fiber assembly mainly to comprise: quarter-wave plate 417,1/2nd wave plate 418, wave plate frame 416, coupled lens 420, coupled lens frame 419, position adjustments part 421, protect inclined coupled fiber 422.Described quarter-wave plate 417 and 1/2nd wave plates 418 are fixed on and are connected on wave plate frame 416 endoporus of housing, coupled lens 420 is fixed on coupled lens frame 419 endoporus, wave plate frame 416 and coupled lens frame 419, coupled lens frame 419 and position adjustments part 421, position adjustments part 421 and the second ceramic insertion core frame 412 ', second ceramic insertion core frame 412 ' and the second ceramic insertion core fixture 413 ', second ceramic insertion core fixture 413 ' and the second tail optical fiber protective sleeve 414 ' are connected and fixed successively, protect inclined coupled fiber 422 successively through the second ceramic insertion core fixture 413 ' and the second tail optical fiber protective sleeve 414 ', and protect the end face of the ceramic insertion core end of inclined coupled fiber 422 at the focus place of described coupled lens 420.Output of laser is through quarter-wave plate, / 2nd wave plates and coupled lens, be coupled into through Output of laser and protect inclined coupled fiber, protect the same pumping optical fiber of fixed form of inclined coupled fiber, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face on the focal plane of coupled lens by axial adjustment ceramic insertion core frame, by laser welding, ceramic insertion core frame and position adjustments part are fixed, the both direction of adjusting position regulating part, make guarantor's inclined coupled fiber assembly ceramic insertion core one end fiber end face in the focus of coupled lens, realize high efficiency coupling fiber, again position adjustments part bottom surface and coupled lens frame are fixed by laser welding, be welded and fixed between coupled lens frame bottom surface and wave plate frame.
Pump light transmits through described pumping optical fiber 415 successively, collimating lens 410 collimates, convergent lens 408 focuses on, through beam incident optical window 407, focus on the front facet of laser crystal 405, nonplanar reflection vibration through laser crystal 405 inside forms Output of laser, Output of laser is successively through outgoing optical window 407 ', quarter-wave plate 417 and 1/2nd wave plates 418, focusing on through coupled lens 420 and protect inclined coupled fiber 422 ceramic insertion core one end fiber end face, exporting through protecting the transmission of inclined coupled fiber 422.Output light is become line polarisation by described quarter-wave plate 417, the polarization direction of 1/2nd wave plate 418 rotational line polarisations, and an one direction is aimed at the major axis or minor axis protecting inclined coupled fiber 422.
The present embodiment is identical with regulative mode with embodiment 3 structure, and difference is that the pumping optical fiber assembly of the present embodiment exchanges with the inclined coupled fiber module position of guarantor, and namely protect inclined coupled fiber assembly on shell hypotenuse, pumping optical fiber assembly is in shell vertical edges.
Claims (6)
1. the small-sized on-plane surface single-frequency ring laser of all-fiber coupling level Hermetic Package, is characterised in that its formation comprises crystal black box, pumping optical fiber assembly and protects inclined coupled fiber assembly;
Described crystal black box comprises shell (101), temperature controller (102), laser crystal supporting bracket (103), temperature measuring device (104), laser crystal (105), piezoelectric ceramic (106), cover plate and the permanent magnet with airtight welding extraction electrode, in the inside of described shell (101), up described temperature controller (102) is fixed successively by bottom surface, laser crystal supporting bracket (103), temperature measuring device (104), laser crystal (105) and piezoelectric ceramic (106), this piezoelectric ceramic (106) top is placed with the permanent magnet be fixedly connected with cover plate, export to form single-frequency laser, described shell (101) realizes level Hermetic Package by described cover plate, this shell (101) is also respectively equipped with beam incident optical window (107) and outgoing optical window (107 '),
Described pumping optical fiber assembly comprises condenser lens (108), condenser lens frame (109), collimating lens (110), collimating lens frame (111), the first ceramic insertion core frame (112), the first ceramic insertion core fixture (113), the first tail optical fiber protective sleeve (114) and pumping optical fiber (115), described condenser lens (108) is fixed on condenser lens frame (109) endoporus, and the front facet center superposition of the focus of this condenser lens (108) and described laser crystal (105), described collimating lens (110) is fixed on collimating lens frame (111) endoporus, the first described tail optical fiber protective sleeve (114), first ceramic insertion core fixture (113), first ceramic insertion core frame (112), collimating lens frame (111) is connected successively with condenser lens frame (109), this condenser lens frame (109) is fixed on described shell (101), the ceramic insertion core end of described pumping optical fiber (115) is successively through the first described tail optical fiber protective sleeve (114) and ceramic insertion core fixture (113), and the end face of the ceramic insertion core end of this pumping optical fiber (115) is at the focus place of described collimating lens (110), described collimating lens (110), condenser lens (108) and beam incident optical window (107) are coaxially,
Described guarantor inclined coupled fiber assembly comprises the second ceramic insertion core frame (112 '), the second ceramic insertion core fixture (113 '), the second tail optical fiber protective sleeve (114 '), wave plate frame (116), quarter-wave plate (117), 1/2nd wave plates (118), coupled lens frame (119), coupled lens (120), position adjustments part (121) and protects inclined coupled fiber (122), described quarter-wave plate (117) and 1/2nd wave plates (118) are arranged in described wave plate frame (116) endoporus, described coupled lens (120) is fixed in coupled lens frame (119) endoporus, the second described tail optical fiber protective sleeve (114 '), second ceramic insertion core fixture (113 '), second ceramic insertion core frame (112 '), position adjustments part (121), coupled lens frame (119) is connected successively with wave plate frame (116), and this wave plate frame (116) is fixed on described shell (101), the inclined coupled fiber of described guarantor (122) ceramic insertion core end successively through the second described tail optical fiber protective sleeve (114 ') and the second ceramic insertion core fixture (113 '), the end face of the ceramic insertion core end of the inclined coupled fiber of this guarantor (122) is at the focus place of described coupled lens (120), described outgoing optical window (107 '), quarter-wave plate (117), / 2nd wave plates (118) and coupled lens (120) are coaxially.
2. the small-sized on-plane surface single-frequency ring laser of all-fiber coupling level Hermetic Package, is characterised in that its formation comprises crystal black box, pumping optical fiber assembly and protects inclined coupled fiber assembly;
Described crystal black box comprises shell (201), temperature controller (202), temperature measuring device (204), laser crystal (205), piezoelectric ceramic (206), cover plate and the permanent magnet with airtight welding extraction electrode; Up described temperature controller, temperature measuring device, laser crystal and piezoelectric ceramic is fixed successively in the inside of described shell, by bottom surface, the permanent magnet be fixedly connected with cover plate is placed with above this piezoelectric ceramic, export to form single-frequency laser, described shell realizes level Hermetic Package by described cover plate, and this shell is also respectively equipped with beam incident optical window and outgoing optical window;
Described pumping optical fiber assembly comprises condenser lens (208), condenser lens frame (209), collimating lens (220), collimating lens frame (211), the first ceramic insertion core frame (212), the first ceramic insertion core fixture (213), the first tail optical fiber protective sleeve (214) and pumping optical fiber (215), described condenser lens (208) is fixed on condenser lens frame (209) endoporus, and the front facet center superposition of the focus of this condenser lens (208) and described laser crystal (205), described collimating lens (210) is fixed on collimating lens frame (211) endoporus, the first described tail optical fiber protective sleeve (214), first ceramic insertion core fixture (213), first ceramic insertion core frame (212), collimating lens frame (211) is connected successively with condenser lens frame (209), this condenser lens frame (209) is fixed on described shell (201), the ceramic insertion core end of described pumping optical fiber (215) is successively through the first described tail optical fiber protective sleeve (214) and ceramic insertion core fixture (213), and the end face of the ceramic insertion core end of this pumping optical fiber (215) is at the focus place of described collimating lens (210), described collimating lens (210), condenser lens (208) and beam incident optical window (207) are coaxially,
Described guarantor inclined coupled fiber assembly comprises the second ceramic insertion core frame (212 '), the second ceramic insertion core fixture (213 '), the second tail optical fiber protective sleeve (214 '), wave plate frame (216), quarter-wave plate (217), 1/2nd wave plates (218), coupled lens frame (219), coupled lens (220), position adjustments part (221) and protects inclined coupled fiber (222), described quarter-wave plate (217) and 1/2nd wave plates (218) are arranged in described wave plate frame (216) endoporus, described coupled lens (220) is fixed in coupled lens frame (219) endoporus, the second described tail optical fiber protective sleeve (214 '), second ceramic insertion core fixture (213 '), second ceramic insertion core frame (212 '), position adjustments part (221), coupled lens frame (219) is connected successively with wave plate frame (216), and this wave plate frame (216) is fixed on described shell (201), the inclined coupled fiber of described guarantor (222) ceramic insertion core end successively through the second described tail optical fiber protective sleeve (214 ') and the second ceramic insertion core fixture (213 '), the end face of the ceramic insertion core end of the inclined coupled fiber of this guarantor (222) is at the focus place of described coupled lens (220), described outgoing optical window (207 '), quarter-wave plate (217), / 2nd wave plates (218) and coupled lens (220) are coaxially.
3. the small-sized on-plane surface single-frequency ring laser of all-fiber coupling level Hermetic Package according to claim 1, it is characterized in that, be the ceramic material identical with the thermal coefficient of expansion of laser crystal or metal material in described laser crystal supporting bracket.
4. the small-sized on-plane surface single-frequency ring laser of all-fiber coupling level Hermetic Package according to claim 1, it is characterized in that, described laser crystal is nonplanar ring cavity crystal, is the laser crystal of different wave length.
5. the small-sized on-plane surface single-frequency ring laser of all-fiber coupling level Hermetic Package according to claim 1, it is characterized in that, described beam incident optical window and outgoing optical window adopt metal solder or glass solder to realize the sealing of window, and described cover plate adopts laser welding or parallel seam welding to realize sealing with the shell with airtight welding extraction electrode.
6. the small-sized on-plane surface single-frequency ring laser of all-fiber coupling level Hermetic Package according to claim 1, it is characterized in that, described wave plate erection has adjustment hole, for regulating the direction of quarter-wave plate (117) and 1/2nd wave plates (118), make the polarization direction of 1/2nd wave plates (118) rotational line polarisation, ensure that an one direction is aimed at the major axis or minor axis protecting inclined coupled fiber (122).
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