CN2607683Y - LD pump microdisk laser - Google Patents
LD pump microdisk laser Download PDFInfo
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- CN2607683Y CN2607683Y CN 03228403 CN03228403U CN2607683Y CN 2607683 Y CN2607683 Y CN 2607683Y CN 03228403 CN03228403 CN 03228403 CN 03228403 U CN03228403 U CN 03228403U CN 2607683 Y CN2607683 Y CN 2607683Y
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- laser
- crystal
- frequency
- light
- frequency multiplication
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Abstract
The utility model relates to an LD pumped microchip laser and consists of a laser diode, a focusing and rectifying device positioned behind the laser diode and optically connected with the laser diode and a microchip group positioned behind the focusing and rectifying device. The microchip group is composed of a laser crystal, a self-focusing lens and a frequency multiplication crystal. Medium membrane layers with a reflection reduction to the wavelength emitted by the laser diode and with a high reflection to the lights of the fundamental frequency light and lights of the frequency multiplication in a chamber are plated at the end surfaces outside the laser crystal and the frequency multiplication crystal. The self-focusing lens is securely connected with the laser crystal and the frequency multiplication crystal through an optical cement or an adhesive, thus forming a gain frequency multiplication laser resonator. Because the optical self-focusing lens is added in the common microchip, the utility model has the advantages as follows: 1) forms a stable chamber structure, enhances the stability, lowers the threshold and increases the conversion efficiency of converting the pumped light into a laser light; 2) isolates the mutual influence and interference of the laser crystal and the frequency multiplication crystal and improves the working condition of the laser.
Description
Technical field
The utility model relates to the solid state laser field, relates in particular to a kind of laser diode-pumped intracavity frequency doubling micro-chip laser device of microminiaturization.
Background technology
The microchip laser of laser diode (LD) pumping is simple and compact for structure, volume is little, cost is low and easy for installation, is fit to produce in batches, has higher commerce and using value.Common intracavity frequency doubling micro-chip laser device resonant cavity partly mainly contains two parts formation at present, be laser crystal and frequency-doubling crystal, both by adhesive gummed or directly the mode of optical cement be fixed together and form Ping-Ping chamber or flat-curved cavity, laser crystal is converted into fundamental frequency light with pump light, and frequency-doubling crystal then obtains the laser output that needs by carrying out two frequencys multiplication or frequency tripling to fundamental frequency light with the suitable coupling of laser crystal.Laser crystal is coated with to pump light anti-reflection (AR), to fundamental frequency light and the high anti-media coating of (HR) of frequency doubled light at the pumping light incident side, that the frequency-doubling crystal laser output is coated with is high anti-to fundamental frequency light, to the anti-reflection media coating of frequency doubled light, both ends of the surface have constituted the resonant cavity of laser jointly, thereby realize laser output.
See also Fig. 1, existing micro-slice laser comprises laser diode 101, the focusing apparatus for shaping 201 that is connected with laser diode 101 light and microplate crystal group 300, and 201 effects of this focusing apparatus for shaping are that the irregular divergent beams to laser diode LD 101 outgoing carry out shaping and focus on the laser crystal 301; What be connected with focusing apparatus for shaping 201 light is microplate crystal group 300, microplate crystal group 300 is fixed together by laser crystal 30 1 and frequency-doubling crystal 302 mode by viscose glue and forms gain frequency multiplication resonant cavity, laser crystal material can be Nd:YVO4, Nd:YAG or other gain medias, and the frequency-doubling crystal material can have the material of frequency multiplication characteristic for KTP, BBO or other; Be coated with by laser crystal 301 1 side end faces LD swashed irradiating light beam anti-reflection simultaneously to the chamber in fundamental frequency light and the high anti-media coating 401 of frequency doubled light, high anti-simultaneously to the anti-reflection media coating 402 of frequency doubled light near then being coated with on frequency-doubling crystal 302 1 side end faces fundamental frequency light, both ends of the surface have been formed Ping-Ping laserresonator.
The thermal lensing effect that this structure must rely on laser crystal could form the laser generation stable cavity, thereby causes general micro-slice laser threshold value height, luminous power big rise and fall.
Summary of the invention
But the purpose of this utility model is to provide a kind of laser diode-pumped intracavity frequency doubling micro-chip laser device of steady operation, thereby realizes the low threshold value of micro-slice laser, efficient laser generation.
A kind of LD pump micro-slice laser provided by the utility model, comprise: a laser diode, be arranged on behind the laser diode and the focusing apparatus for shaping that connects of light with it, be arranged on the microplate crystal group that focuses on behind the apparatus for shaping, described microplate crystal group comprises laser crystal and frequency-doubling crystal, and outside described laser crystal Side one end end face be coated with to the laser diode emission wavelength anti-reflection simultaneously to the chamber in the high anti-media coating of fundamental frequency light and frequency doubled light, then be coated with fundamental frequency light high anti-at the outside of frequency-doubling crystal one end end face simultaneously to the anti-reflection deielectric-coating of frequency doubled light, it is characterized in that, described microplate crystal group comprises that also one is arranged on the GRIN Lens between described laser crystal and the frequency-doubling crystal, and this GRIN Lens and described laser crystal and frequency-doubling crystal are to be fixed together by the mode that optical cement or adhesive glue together, and form gain double-frequency laser resonant cavity.
Above-mentioned LD pump micro-slice laser, wherein, gain double-frequency laser resonant cavity can be Ping-Ping chamber type or flat-cavity type.
Owing to adopted above-mentioned technical scheme, promptly by in common microplate, adding the method for a slice optics GRIN Lens, make the utility model compared with prior art, have following advantage and good effect: 1) formed the stable cavity structure, stability improves, threshold value greatly reduces, and the conversion efficiency that pump light is converted to laser improves; 2) isolate interacting and disturbing of laser crystal and frequency-doubling crystal, improved the laser works situation.
Description of drawings
Fig. 1 is the structural representation of the common micro-slice laser of prior art;
Fig. 2 is a microplate crystal group schematic diagram of the present utility model;
Fig. 3 is the structural representation of the utility model LD pump micro-slice laser.
Embodiment
As shown in Figure 3, the utility model LD pump micro-slice laser is made up of laser diode 101, focusing apparatus for shaping 201, microplate crystal group 300.Wherein, laser diode LD 101 is as pumping source; What be connected with laser diode LD 101 light is to focus on apparatus for shaping 201, and its effect is that the irregular divergent beams to laser diode LD 101 outgoing carry out shaping and focus on the laser crystal; What be connected with focusing apparatus for shaping 201 light is microplate crystal group 300.As shown in Figure 2, microplate crystal group 300 is fixed together by laser crystal 301, GRIN Lens 303 and frequency-doubling crystal 302 mode by optical cement, form gain frequency multiplication resonant cavity, laser crystal 301 materials can be Nd:YVO4, Nd:YAG or other gain medias, frequency-doubling crystal 302 materials can have the material of frequency multiplication characteristic for KTP, BBO or other, and GRIN Lens 303 claims gradual change or gradient-index lens again, GRIN lens, two ends see through fundamental frequency light and frequency doubled light height.Near laser crystal 301 1 side end faces platings LD is swashed irradiating light beam anti-reflection simultaneously to the chamber in fundamental frequency light and the high anti-media coating 401 of frequency doubled light, high anti-simultaneously to the anti-reflection media coating 402 of frequency doubled light near then being coated with on frequency-doubling crystal 302 1 side end faces to fundamental frequency light, both ends of the surface have been formed Ping-Ping laserresonator, that is: laser crystal 301 and frequency-doubling crystal 302 plated film faces can be worn into the plane adding man-hour, or flat-recessed resonant cavity (not shown), that is: plane-concave surface.
In sum, in the utility model, laser diode-pumped intracavity frequency doubling micro-chip laser device by a kind of adding of simple GRIN Lens, has been realized low threshold value laser generation and very high light-light conversion efficiency, therefore has higher utility.
Claims (2)
1, a kind of LD pump micro-slice laser, comprise: a laser diode (101), be arranged on laser diode (101) back and the focusing apparatus for shaping (201) that connects of light with it, be arranged on the microplate crystal group (300) that focuses on behind the apparatus for shaping (201), described microplate crystal group (300) comprises laser crystal (301) and frequency-doubling crystal (302), and outside described laser crystal (301) Side one end end face be coated with to laser diode (101) emission wavelength anti-reflection simultaneously to the chamber in the high anti-media coating (401) of fundamental frequency light and frequency doubled light, then be coated with fundamental frequency light high anti-at the outside of frequency-doubling crystal (a 302) end end face simultaneously to the anti-reflection deielectric-coating of frequency doubled light (402), it is characterized in that, described microplate crystal group (300) comprises that also one is arranged on the GRIN Lens (303) between described laser crystal (301) and the frequency-doubling crystal (302), and this GRIN Lens (303) and described laser crystal (301), frequency-doubling crystal (302) is to be fixed together by the mode that optical cement or adhesive glue together, and forms gain double-frequency laser resonant cavity.
2, a kind of LD pump micro-slice laser as claimed in claim 1 is characterized in that: described gain double-frequency laser resonant cavity can be Ping-Ping chamber type or flat-cavity type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228403 CN2607683Y (en) | 2003-01-27 | 2003-01-27 | LD pump microdisk laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03228403 CN2607683Y (en) | 2003-01-27 | 2003-01-27 | LD pump microdisk laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2607683Y true CN2607683Y (en) | 2004-03-24 |
Family
ID=34164288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03228403 Expired - Fee Related CN2607683Y (en) | 2003-01-27 | 2003-01-27 | LD pump microdisk laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2607683Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111290193A (en) * | 2020-02-21 | 2020-06-16 | 西北工业大学 | Frequency doubling device and all-fiber autocorrelation instrument |
-
2003
- 2003-01-27 CN CN 03228403 patent/CN2607683Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111290193A (en) * | 2020-02-21 | 2020-06-16 | 西北工业大学 | Frequency doubling device and all-fiber autocorrelation instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040324 Termination date: 20110127 |