CN203387048U - Q-switched laser device - Google Patents
Q-switched laser device Download PDFInfo
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- CN203387048U CN203387048U CN201320514849.1U CN201320514849U CN203387048U CN 203387048 U CN203387048 U CN 203387048U CN 201320514849 U CN201320514849 U CN 201320514849U CN 203387048 U CN203387048 U CN 203387048U
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- gain medium
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Abstract
The utility model discloses a Q-switched laser device characterized by comprising a laser gain medium, a piece of electro-optical material having Brewster angles, and a window piece, which are arranged sequentially along an optical path. The optical path and the electro-optical material form Brewster angle incidence. The Q-switched laser device described by the utility model adopts the electro-optical material including isotropic electro-optical ceramic as an electro-optical Q-switching device and realizes the polarizing and polarization analyzing by polishing the end faces of the electro-optical material to form the Brewster angles; and by employing the Brewster angle's natural characteristic of being reflection-free with respect to specific polarized light (P light), the end face film plating is eliminated. Therefore, the hidden trouble that high-power Q-switched pulses damage a film layer on the surface of the device is effectively prevented and the maximum output power of the laser device can be increased. Through precise design, the Brewster angle's application scope can be optimized, and the multi-wavelength Q-switched pulse output can be realized.
Description
Technical field
The utility model relates to laser field, relates in particular to a kind of Q-switched laser.
Background technology
Q-regulating technique be exactly Q value by making someway chamber in time by the technology of certain procedures, will be stored in before this energy abrupt release acquisition high power, the light pulse of short duration of upper energy level by the cavity that suddenly cavity of low reactance-resistance ratio is switched to high Q value.Conventional active Q-regulating technique mainly contains machinery, acousto-optic and electric-optically Q-switched technology, and mechanical Q-regulating technique is limited to the speed restriction of mechanical movement, is difficult to realize the tune Q output of ultrashort pulse, ultrafast frequency.And acousto-optic Q modulation is limited to the impact of the speed of diffraction efficiency and sound wave, its ability of adjusting Q efficiency and output ultrashort pulse is also relatively not as electric-optically Q-switched.And conventional electro-optical Q-switching laser, often supporting had an inclined to one side analyzing device, and this has obviously reduced the Q value of laser.And the driving voltage of conventional electro-optical Q-switching laser is generally higher, preparation is difficulty relatively.
Summary of the invention
For the problems referred to above, the purpose of this utility model is to provide a kind of peak power output that can the improving laser device, and can realize the Q-switched laser of the pulse output of multi-wavelength and Q-modulating.
For achieving the above object, the technical scheme that the utility model proposes is: a kind of Q-switched laser, it is characterized in that: comprise that the gain medium, set gradually along light path has electrooptical material and the diaphragm of Brewster's angle, described light path becomes brewster angle incidence with electrooptical material.
Further, it is the Nd ion laser gain medias such as Nd:YVO4 gain medium, Nd:GdVO4 gain medium or Nd:YAG gain medium that described gain medium both can adopt material, can be also the gain medium of other non-Nd ions.
Further, described electrooptical material is preferably isotropic electrooptical material, as electrooptic ceramic.
Adopt technique scheme, Q-switched laser described in the utility model, adopt isotropic electrooptic ceramic at interior electrooptical material as electric-optically Q-switched device, by the mode of its end face being worn into to Brewster's angle realized partially, analyzing; And utilize Brewster's angle to remove end face coating from, the hidden danger of effectively having avoided high-power Q-switched pulse that the device surface rete is wounded, but the peak power output of improving laser device to the unreflected natural characteristic of special polarization state light (P light).By precision, design, we can optimize the range of application of Brewster's angle, can realize the pulse output of multi-wavelength and Q-modulating.
The accompanying drawing explanation
Fig. 1 is the schematic diagram of the electric-optically Q-switched laser of prior art;
Fig. 2 is Q-switched laser structural representation described in the utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
Consult the electro-optical Q-switching laser structure of the routine shown in Fig. 1, all be equipped with that parts 11(rises partially, analyzer), the introducing of these parts will cause the inherent loss of laser to rise, reduce the Q value of laser, and the surface of parallel incident often needs to add the plating anti-reflection film, this also easily is damaged under the high-peak power operation, even adopt equally, Brewster's angle has been done partially, the analyzing device, still the Q value of laser is had to certain influence.
As shown in Q-switched laser structural representation as described in the utility model as Fig. 2, the gain medium 21, one that comprises pumping source and set gradually along light path has electrooptical material 22 and the diaphragm 23 of Brewster's angle, 221 incidents of 22 one-tenth Brewster's angles of described light path and electrooptical material.Adopt such scheme, be processed into the form of Brewster's angle as electrooptical material 22 both ends of the surface of electro-optical modulation device, the adjustment of the electric light polarization state realized on the basis that does not increase more optical elements has reached partially, the function of analyzing; The integrated parts of electro-optical Q-switching laser that make of function are simplified, and effectively reduce the laser loss, promote the Q value, the power of improving laser device.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; in the form and details the utility model is made a variety of changes, be protection range of the present utility model.
Claims (6)
1. a Q-switched laser, it is characterized in that: comprise that the gain medium, set gradually along light path has electrooptical material and the diaphragm of Brewster's angle, described light path becomes brewster angle incidence with electrooptical material.
2. a kind of Q-switched laser according to claim 1, it is characterized in that: described gain medium is Nd ion laser gain media.
3. a kind of Q-switched laser according to claim 2, it is characterized in that: described Nd ion laser gain media is Nd:YVO4 gain medium, Nd:GdVO4 gain medium or Nd:YAG gain medium.
4. a kind of Q-switched laser according to claim 1, is characterized in that: the gain medium that described gain medium is non-Nd ion.
5. a kind of Q-switched laser according to claim 1, it is characterized in that: described electrooptical material is isotropic electrooptical material.
6. a kind of Q-switched laser according to claim 5, it is characterized in that: described electrooptical material is electrooptic ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514849.1U CN203387048U (en) | 2013-08-22 | 2013-08-22 | Q-switched laser device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320514849.1U CN203387048U (en) | 2013-08-22 | 2013-08-22 | Q-switched laser device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203387048U true CN203387048U (en) | 2014-01-08 |
Family
ID=49875500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320514849.1U Expired - Fee Related CN203387048U (en) | 2013-08-22 | 2013-08-22 | Q-switched laser device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203387048U (en) |
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2013
- 2013-08-22 CN CN201320514849.1U patent/CN203387048U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140108 Termination date: 20170822 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |