CN1266300A - Microcavity structured all-solid laser for converting blue light on pump glass block of semiconductor laser - Google Patents
Microcavity structured all-solid laser for converting blue light on pump glass block of semiconductor laser Download PDFInfo
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- CN1266300A CN1266300A CN 99103865 CN99103865A CN1266300A CN 1266300 A CN1266300 A CN 1266300A CN 99103865 CN99103865 CN 99103865 CN 99103865 A CN99103865 A CN 99103865A CN 1266300 A CN1266300 A CN 1266300A
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Abstract
The present invention belongs to the field of semiconductor laser technology, and is formed from semiconductor laser (LD) tube leg, LD tube core, self-focusing lens, laser resonant cavity, LD tube cap and LD tube seat. Said resonant cavity is formed from glass up-converting laser working material, and adopts rare-earth doped fluozirconate up-converting laser material glass. Its self-focusing lens is made into the form of cylinder body, its one end is plane, and another end is cylindrical les, and is corresponent to input end of resonant cavity. By adopting the high-effective up-converting laser material and possessing block structure, it is small in volume, can be used for writing in and read out on the optical disk, and making special sensor, etc..
Description
The invention belongs to converting blue light all solid laser technical field on the diode-end-pumped.
Have only converting blue light all solid laser on the large-scale laser pumping fluoride glass optical fiber structure at present abroad, for example: ti sapphire laser pumping fluozirconate is mixed converting blue light laser on rare earth thulium glass (ZBLAN:Tm) optical fiber.The operation material of this upconversion laser is that the fluoride list is mixed upward conversion glass laser material of rare earth thulium (Tm), because of last conversion efficiency not high, so can only drawing optic fibre to increase the interaction length of pump light and working-laser material, make its structure more complicated, the advantage that does not possess miniaturization, and cost is also than higher.Because be single doping, can only use the diode-end-pumped of 1120nm wavelength, and the 1120nm semiconductor laser also there is not commercialization now, again so do not realize miniaturization yet.Though with semi-conducting material is the desired solution that realizes this miniature laser, does not succeed in developing as yet so far.
The purpose of this invention is to provide the small-sized microcavity all solid laser of a kind of diode-end-pumped converting blue light on glass, can on CD, be used to write and sense data, also can be used for panchromatic laser writer, as the display screen of color laser television set, also can be used for the aspects such as manufacturing of laser printing, underwater communication, special sensor.
Fig. 1 is a structural representation of the present invention.1 is semiconductor laser (LD) pipe leg among the figure, and 2 is semiconductor laser (LD) tube core, 3 GRIN Lens, and 4 is laser resonant cavity, the blue laser beam of 5 outputs, 6 laser light holes, 7 semiconductor lasers (LD) pipe cap, 8 semiconductor lasers (LD) base.
Fig. 2 is the structure chart of GRIN Lens 3.9 is cylinder among the figure, and 10 is cylindrical mirror.
The present invention is mainly by LD pipe leg 1, light hole 6, LD pipe cap 7, LD base 8 and microcavity partly wait formation. Wherein microcavity partly is core of the present invention, is to be managed by LD Core 2, GRIN Lens 3 and laserresonator 4 form. LD tube core 2, self-focusing is saturating Mirror 3 and laser resonant cavity 4 can be made of one, and form the very little microlaser cavity of volume.
Laser resonant cavity 4 itself is made of conversion working-laser material on glass.What conversion working-laser material on glass adopted high conversion efficiency mixes rare earth fluozirconate up-conversion lasing material glass.The component of fluozirconate up-conversion lasing material glass is: (50-60%) ZrF
4-(20-30%) BaF
2-(0-10%) LaF
3(0-5%) AlF
3-(0-20%) NaF, wherein each component percentage composition is a molar percentage.The Doped Rare Earth ion Tm of institute
3+And Yb
3+, be codope, perhaps be rare earth Er, the single doping.The height of conversion efficiency is gone up in rear-earth-doped amount decision.
Laser resonant cavity 4 is a club shaped structure, is generally cuboid or cylinder.Sectional area is 4-16mm
2, length is 2-10mm.As required with high conversion efficiency mix rare earth fluozirconate up-conversion lasing material glass, cut into the bar-shaped of certain size, carry out optical polish then.The cross section that glass blocks after the polishing is got two ends is respectively as the input and output end face of laser.The high saturating and high anti-binary medium film of 470-491nm of input plating 965-985nm, this end face is as the input mirror of resonant cavity; Output plating 965-985nm height is the binary medium film of 470-491nm reflection 93-95% on the contrary, and this end face is as the outgoing mirror of resonant cavity.
GRIN Lens 3 is formed cylinder 9 and cylindrical mirror 10 by two parts.Cylinder 9 is made cylinder, and cylinder 9 length are 4-5mm.Cylinder diameter is 1.8-2.0mm.The cylinder 9 of GRIN Lens 3 is the plane with the end face of LD coupling, numerical aperture NA=0.6-0.8; The other end is a cylindrical mirror 10.The cylindrical axis of cylindrical mirror 10 is vertical with the axle of the cylinder 9 of GRIN Lens 3.3 pairs of microscler hot spots of LD of GRIN Lens have shaping and the LD angular-spread beam are focused on two effects.
Pumping source is semiconductor laser (LD), adopts commercial 970-980nm semiconductor laser both at home and abroad.
The bright dipping end of the LD tube core 2 in semiconductor laser cavity is equipped with GRIN Lens 3, and the planar ends of GRIN Lens 3 is facing to LD tube core 2.Cylindrical mirror 10 1 sides in GRIN Lens 3 have laser resonant cavity 4.The cylindrical mirror 10 of GRIN Lens 3 is corresponding with the input of laser resonant cavity 4.
The present invention uses conversion laser material on glass, and it is very high not only to go up conversion efficiency, and the laser gain coefficient is up to 66.3cm
-1, therefore directly use commercial 970-980nm semiconductor laser (LD) pumping at present both at home and abroad without drawing optic fibre, just can make the blue light micro-cavity laser.Its structure is diminished greatly.This miniature laser can be used for the light storage, also can be used on other tiny device, and the scope of application is wider.
The present invention one is that employing up-conversion lasing material is a glass material, will obviously reduce so compare its cost with crystal.The 2nd, the up-conversion lasing material that adopts is block glass structure, compares with glass optical fiber and has lacked the technology of drawing optical fiber together, so its cost nature is lower than the cost of the small-sized all solid laser of converting blue light on the LD pumping fluoride glass optical fiber structure.The 3rd, if adopt the frequency multiplication structure, then need two crystal, to plate ternary films simultaneously; If adopt the glass optical fiber structure, then need to increase drawing optical fiber technology; And adopting the present invention only to need a glass to get final product, plating binary film just can satisfy the requirement of laser.The 4th is that the present invention's pump optical that is coupled has adopted special GRIN Lens, compare with compound lens, the prism compound lens of routine, and volume minimum not only, and have both function simultaneously again to the LD beam shaping, so pumping efficiency is also high.It is all minimum a kind of blue laser of volume and weight in present all pumping total solids miniature lasers.
Embodiments of the invention are as follows.
High conversion efficiency mix rare earth thulium and ytterbium fluozirconate up-conversion lasing material glass, be cut into 3 * 3 * 7mm
3Rectangular shape, carry out optical grade polishing, get 3 * 3mm afterwards
2Both sides are respectively as the input and output end face of laser.The high saturating and high anti-binary medium film of 475nm of one end plating 970nm is as the input mirror of resonant cavity; Other end plating 970nm height is the binary medium film of 475nm reflection 93-95% on the contrary, and this end face is as the outgoing mirror of resonant cavity.Above-mentioned cuboid glass is laser resonant cavity 4 of the present invention.
GRIN Lens 3 adopts structure to be the cylinder of 4mm for 1.8mm is long, and with the plane numerical aperture NA=0.6 of LD coupled end, the other end makes cylinder, becomes cylindrical mirror.
Semiconductor laser (LD) adopts the 970-980nm semiconductor laser to make pumping source.
Claims (5)
1. converting blue light microcavity structured all-solid laser on the semiconductor laser glass blocks, be by diode-end-pumped, the up-conversion lasing material, compositions such as set of lenses, it is characterized in that laser resonant cavity 4 mixes rare earth fluozirconate up-conversion lasing material glass for high conversion efficiency, be shaped as bar-shapedly, sectional area is 4-16mm
2, length is 2-10mm, the high saturating and high anti-binary medium film of 470-491nm of input plating 965-985nm, and output plating 965-985 height is the binary medium film of 470-491nm reflection 93-95% on the contrary; Set of lenses is a GRIN Lens 3, is made up of cylinder 9 and cylindrical mirror 10 one, and cylinder 9 length are 4-5mm, and numerical aperture is NA=0.6-0.8; The planar ends of GRIN Lens 3 is facing to the output of semiconductor laser (LD) tube core 2, and level crossing 10 is facing to the input of laser resonant cavity 4.
2. laser for converting blue light on pump glass block of semiconductor microcavity structured all-solid laser according to claim 1 is characterized in that the rare earth that the up-conversion lasing operation material of laser resonant cavity 4 is mixed is thulium (Tm) and ytterbium (Y
b).
3. laser for converting blue light on pump glass block of semiconductor microcavity structured all-solid laser according to claim 2 is characterized in that the cylindrical axis of cylindrical mirror 10 of GRIN Lens 3 is vertical with the axle of cylinder 9.
4. laser for converting blue light on pump glass block of semiconductor microcavity structured all-solid laser according to claim 3 is characterized in that GRIN Lens 3 is cylinder, directly through 1.8-2.0mm.
5. laser for converting blue light on pump glass block of semiconductor microcavity structured all-solid laser according to claim 1 is characterized in that described diode-end-pumped adopts the 970-980nm diode-end-pumped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99103865 CN1266300A (en) | 1999-03-09 | 1999-03-09 | Microcavity structured all-solid laser for converting blue light on pump glass block of semiconductor laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99103865 CN1266300A (en) | 1999-03-09 | 1999-03-09 | Microcavity structured all-solid laser for converting blue light on pump glass block of semiconductor laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1266300A true CN1266300A (en) | 2000-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99103865 Pending CN1266300A (en) | 1999-03-09 | 1999-03-09 | Microcavity structured all-solid laser for converting blue light on pump glass block of semiconductor laser |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714394A (en) * | 2009-07-29 | 2012-10-03 | 密执安州立大学董事会 | Organic laser |
-
1999
- 1999-03-09 CN CN 99103865 patent/CN1266300A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102714394A (en) * | 2009-07-29 | 2012-10-03 | 密执安州立大学董事会 | Organic laser |
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