CN204741165U - Semiconductor laser pumping doubled single frequency laser - Google Patents
Semiconductor laser pumping doubled single frequency laser Download PDFInfo
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- CN204741165U CN204741165U CN201520359795.5U CN201520359795U CN204741165U CN 204741165 U CN204741165 U CN 204741165U CN 201520359795 U CN201520359795 U CN 201520359795U CN 204741165 U CN204741165 U CN 204741165U
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Abstract
The utility model relates to a semiconductor laser pumping doubled single frequency laser. Including semiconductor laser, half -wave plate, biconvex dlens, optic fibre, two single protruding dlens, lens, non -linear second harmonic generation crystal, light filter, single mode fiber. This patent adopts the laser of multimode fiber direct coupling semiconductor laser output, through obtaining longer rayleigh distance after the collimation focus to place the second harmonic generation crystal within range, obtain high -efficient frequency doubled light, the output of rethread coupling optic fibre. Wherein, can adjust base frequency light sum frequency doubled light couplingout optic fibre and fixed, according to the actual need of difference, change LD and non -linear second harmonic generation crystal again, not need to adjust just repeatedly to obtain required output laser.
Description
Technical field
This patent, for relating to field of lasers, particularly relates to a kind of by semiconductor laser pumping frequency double laser.
Background technology
Current miniature laser is applied in a lot of field, such as laser display, optical storage, laser aiming, remote sensing communication etc.But, common small semiconductor pumped solid-state laser, particularly intracavity frequency doubling laser, all adopt bonded crystals structure, bonded crystals is a kind of complex technique of laser crystal, because optical crystal has higher fusing point mostly, usually needs to impel the molecule phase counterdiffusion of two pieces of crystal through the surface that precision optics is processed, fusion by high-temperature heat treatment, the chemical bond that final formation is more stable, reaches truly diffusion interlinked.Although but bonded crystals compact conformation, the restriction of the life-span light adhesive process of power output, crystal qualification rate, laser, is difficult to improve further, and bonding micro-slice laser need by optical manufacturing, to ensure the parallel of each optical surface.
Test utilize be coupled 976nm lasing efficiency of multimode fiber to reach more than 90% at present, the coupling efficiency of such pumping laser is higher, so by coupling fiber, be particularly a kind of very practical structure to save employing pole, space short fiber line coupling pumping laser.
Summary of the invention
For solving the problem, the technical scheme that the utility model adopts is: a kind of semiconductor laser pumping frequency double laser, comprise semiconductor laser, half-wave plate, biconvex Dlens, singly convex Dlens, lens, frequency doubling non-linear's crystal, filter, monomode fiber are all coaxially arranged optical fiber, two, described semiconductor laser is as pumping source, the pump light exported is coupled directly into into optical fiber, Rayleigh distance is obtained after scioptics collimation focusing, and frequency-doubling crystal is placed lens focus place, export efficient frequency doubled light.Biconvex Dlens is used for direct-coupling LD output light and enters optical fiber.The optical fiber of described coupling semiconductor laser device Output of laser is multimode fiber.Single convex Dlens mono-is for collimating the light from fiber exit, and one is coupled into optical fiber for focusing on the frequency doubled light obtained.Filter surface is coated with frequency doubled light anti-reflection film and fundamental frequency light high-reflecting film.
Profitable fruit of the present utility model is: pumping laser shaping coupled system and frequency doubled light coupling outgoing system are integrally considered, as long as just can meet times yupin effect of different demand by changing different wave length and the LD of power and the nonlinear crystal of different length and cutting angle, convenient and practical.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the utility model first embodiment;
Fig. 2 is the structural representation according to the utility model second embodiment;
Fig. 3 is the structural representation according to the utility model the 3rd embodiment;
Fig. 4 is the structural representation according to the utility model the 4th embodiment.
Embodiment
Below the frequency double laser of semiconductor laser pumping is described further the present utility model by reference to the accompanying drawings:
Embodiment one: as shown in Figure 1, the light that semiconductor laser 101 exports is coupled into multimode fiber 104 through biconvex Dlens103, again through the convex Dlens105 collimation of short focus list, focusing on the long Rayleigh of acquisition by long-focus lens 106 incides on frequency-doubling crystal 107 apart from little focal beam spot, and the frequency doubled light that wave plate 108 obtains after filtration is coupled into monomode fiber 110 by single convex Dlens109 again.Wherein half-wave plate 102 is used for fixing fundamental frequency light polarization direction.
Embodiment two: as shown in Figure 2, the light that semiconductor laser 201 exports is coupled into multimode fiber 205 through biconvex Dlens203, again through single convex Dlens207 collimation, focus on frequency-doubling crystal 209 by lens 208, the frequency doubled light that wave plate 210 obtains after filtration is coupled into monomode fiber 213 by single convex Dlens211 again.The biconvex Dlens of the fundamental frequency light that is wherein coupled and the incident optical head of multimode fiber are fixed in glass bushing 204, the outgoing optical fiber head of multimode fiber and its collimating lens are fixed in glass bushing 206, the convex Dlens of list and the monomode fiber optical fiber head of coupling gained frequency doubled light are fixed in glass bushing 212, more convenient adjustment and fixing.
Embodiment three: as shown in Figure 3, the light that semiconductor laser 301 exports is coupled into multimode fiber 305 through biconvex Dlens303, to frequency-doubling crystal 307, obtain frequency doubled light through single convex Dlens306 collimation focusing again, then be coupled into monomode fiber 213 by single convex Dlens308.Wherein fine for multimode fiber line is prescinded 2-3mm, the biconvex Dlens of coupling fundamental frequency light and multimode fiber and the convex Dlens of collimating lens list thereof are fixed in same glass bushing 304, and this spline structure is tightlier urged.On frequency doubled light coupling output lens 308, be coated with the HR film to fundamental frequency light simultaneously, eliminate filter, make total more succinct.
Embodiment four: as shown in Figure 4, the light that semiconductor laser 401 exports is coupled into multimode fiber 406 through biconvex Dlens404, to frequency-doubling crystal 409, obtain frequency doubled light through single convex Dlens407 collimation focusing again, then be coupled into monomode fiber 412 by single convex Dlens410.Wherein on the basis of embodiment 3, the coupled system of fundamental frequency light and frequency doubled light is fixed on one piece of substrate 403 simultaneously, integrally consider, as long as just can meet times yupin effect of different demand by changing different wave length and the LD of power and the nonlinear crystal of different length and cutting angle, convenient and practical.Settle one block of half-wave plate 408 at fundamental frequency light exit end, be used for regulating the polarization direction of fundamental frequency light, to meet different coupling requirements.
Although specifically show in conjunction with preferred embodiment and describe this patent; but those skilled in the art should be understood that; in the spirit and scope not departing from this patent that appended claims limits; can make a variety of changes this patent in the form and details, be the protection range of this patent.
Claims (5)
1. a semiconductor laser pumping frequency double laser, comprise semiconductor laser, half-wave plate, biconvex Dlens, singly convex Dlens, lens, frequency doubling non-linear's crystal, filter, monomode fiber are all coaxially arranged optical fiber, two, it is characterized in that: described semiconductor laser is as pumping source, the pump light exported is coupled directly into into optical fiber, Rayleigh distance is obtained after scioptics collimation focusing, and frequency-doubling crystal is placed lens focus place, export efficient frequency doubled light.
2. a kind of semiconductor laser pumping frequency double laser according to claim 1, is characterized in that: biconvex Dlens is used for direct-coupling LD output light and enters optical fiber.
3. a kind of semiconductor laser pumping frequency double laser according to claim 1, is characterized in that: described optical fiber is multimode fiber.
4. a kind of semiconductor laser pumping frequency double laser according to claim 1, is characterized in that: single convex Dlens mono-is for collimating the light from fiber exit, and one is coupled into optical fiber for focusing on the frequency doubled light obtained.
5. a kind of semiconductor laser pumping frequency double laser according to claim 1, is characterized in that: filter surface is coated with frequency doubled light anti-reflection film and fundamental frequency light high-reflecting film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520359795.5U CN204741165U (en) | 2015-05-29 | 2015-05-29 | Semiconductor laser pumping doubled single frequency laser |
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| CN201520359795.5U CN204741165U (en) | 2015-05-29 | 2015-05-29 | Semiconductor laser pumping doubled single frequency laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736299A (en) * | 2018-07-24 | 2018-11-02 | 长春新产业光电技术有限公司 | A kind of two-way position regulators of frequency-doubling crystal X-Y |
| CN108761622A (en) * | 2018-08-17 | 2018-11-06 | 山东大学 | A kind of true zero level optical wave plate of the large scale of low wavelength sensitivity and the preparation method and application thereof |
| CN113324666A (en) * | 2021-05-28 | 2021-08-31 | 中国科学院西安光学精密机械研究所 | Femtosecond laser pulse carrier envelope phase offset frequency detection device and method |
-
2015
- 2015-05-29 CN CN201520359795.5U patent/CN204741165U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108736299A (en) * | 2018-07-24 | 2018-11-02 | 长春新产业光电技术有限公司 | A kind of two-way position regulators of frequency-doubling crystal X-Y |
| CN108761622A (en) * | 2018-08-17 | 2018-11-06 | 山东大学 | A kind of true zero level optical wave plate of the large scale of low wavelength sensitivity and the preparation method and application thereof |
| CN108761622B (en) * | 2018-08-17 | 2024-01-23 | 山东大学 | Large-size true zero-order optical wave plate with low wavelength sensitivity and preparation method and application thereof |
| CN113324666A (en) * | 2021-05-28 | 2021-08-31 | 中国科学院西安光学精密机械研究所 | Femtosecond laser pulse carrier envelope phase offset frequency detection device and method |
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