CN201060337Y - Electrooptical switch - Google Patents
Electrooptical switch Download PDFInfo
- Publication number
- CN201060337Y CN201060337Y CNU2007200062200U CN200720006220U CN201060337Y CN 201060337 Y CN201060337 Y CN 201060337Y CN U2007200062200 U CNU2007200062200 U CN U2007200062200U CN 200720006220 U CN200720006220 U CN 200720006220U CN 201060337 Y CN201060337 Y CN 201060337Y
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- electro
- crystal
- optic crystal
- external electrode
- electrooptical switching
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Abstract
The utility model relates to an electro-optical switch, pertaining to the photo-electronic field. The electro-optical switch comprises a shell (201), an electro-optical crystal (202) and a metal conductive layer (203). The utility model is characterized in that: an indium foil (204) is attached to the outside of the metal conductive layer (203); a metal sheet (205) is attached close to the outside of the indium foil (204); and an external electrode (207) is connected with the metal sheet (205) through a compressible spring (206). The structure of the electro-optical switch not only can maintain the long-term reliable electrical contact between the external electrode and the electro-optical crystal, but also reduce the broken risk and attached phase loss brought by the installation stress to the electro-optical crystal, strengthen the closing ability of the electro-optical switch and enhance the performance of the laser.
Description
Technical field
The utility model patent belongs to optoelectronic areas, refers in particular to a kind of electrooptical switching of being made up of monolithic or polylith electro-optic crystal.
Background technology
In laser instrument, electrooptical switching is a very important device.Electrooptical switching is widely used in the Q-switch laser oscillator, cavity dumping laser oscillator, laser regeneration amplifier, the pulse of mode locking pulse sequence menu, occasions such as mode locking pulse column selection dipulse and phototiming.
One of factor that emphasis was considered when the connected mode of crystal and external electrode was the design electrooptical switching.
The most frequently used connected mode of crystal and external electrode is bonding and directly presses solidly.
So-called bonding mode directly couples together electrode and crystal with conductive bonding agent exactly, this electrooptical switching simple in structure.But cementing agent is very easily aging under flashlamp and laser radiation, and the volatilization of cementing agent can be polluted the optical element in the laser instrument, and the optical element threshold for resisting laser damage is reduced.
Accompanying drawing 1 is the synoptic diagram that adopts the electrooptical switching that the direct mode of pressing solidly connects.101 is switch housing among the figure, and 102 is electro-optic crystal, and 103 is can metal conducting layer, and 104 is sheet metal, and 105 is conductive rubber, and 106 is external electrode.When assembling, realize good electrical contact in order to make external electrode and crystal on side face, must on conductive rubber, add certain power, make conductive rubber generation deformation, then fixed electorde.Because the deformation quantity of conductive rubber and the relation of external force are not linear, when deformation acquires a certain degree, contacting between external electrode and crystal is approximately rigidity, thus the stress that almost uncontrollable this fit produces on crystal, crystal in addition have crushed may.And the erection stress that is added on the crystal can make crystal generation strain, causes the variation of refractive index main shaft and refractive index size, thereby introduces additional phase delay.Additional phase delay can cause switch the phenomenon of " Guan Bujing " to occur, and the energy that is stored in the laser medium can be consumed before switch opens, so power (or energy) reduces greatly.
Along with wearing out of conductive rubber, its elasticity and electric conductivity all can reduce, and the conductive rubber that loses deformability can't guarantee external electrode and the long-term good electrical contact of crystal on side face.
Summary of the invention
The purpose of this utility model is to solve the electrode connectivity of electro-optic crystal and directly presses solidly the stress problem that mode produces on crystal.
The present invention includes following technical scheme:
1. an electrooptical switching comprises housing 201, and electro-optic crystal 202 and metal conducting layer 203 are stained with indium foil 204 in metal conducting layer 203 outsides, and indium foil 204 outsides are provided with sheet metal 205, and external electrode 207 is connected with sheet metal 205 by compressible spring 206.
2. as 1 a described electrooptical switching, described electro-optic crystal 202 is horizontal application mode or vertical application mode.
3. as 1 a described electrooptical switching, described electro-optic crystal 202 is monolithic crystal or polylith serial connection.
4. as 1 or 2 or 3 a described electrooptical switching, described electro-optic crystal 202 can be BBO, also can be DKDP, LiNbO
3, RTP or KTP monocrystalline.
The utility model patent following advantage arranged: on the connected mode of electrode, use quality softness, indium sheet and compressible spring that electric conductivity is good.The former has guaranteed to electrically contact closely between the whole conductive layer of sheet metal and electro-optic crystal, has improved the homogeneity of electric field; The characteristics that the deformation quantity of The latter spring is directly proportional with external force just can quantitatively be controlled the stress that is added on the crystal by the deformation quantity of control spring.Select for use suitable spring can make the erection stress on the crystal be reduced to the degree that can produce the additive phase delay hardly.Be in compressive state spring also guaranteed between external electrode and electro-optic crystal electrically contacting reliably and with long-term, avoid occurring " opening circuit " phenomenon that causes because of environment temperature acute variation or vibration.
The electrode connection mode that the utility model proposes is applicable to the electrooptical switching of various application modes.
Description of drawings
The electrooptical switching synoptic diagram of Fig. 1 for adopting the direct mode of pressing solidly to connect.
Fig. 2 is the utility model electrooptical switching electrode connection mode synoptic diagram.
Fig. 3, Fig. 4 are that two crystal are connected in series, laterally use electrooptical switching embodiment.
Fig. 5 vertically uses electrooptical switching embodiment.
Embodiment
Example 1 embodiment 1 of the present utility model is referring to accompanying drawing 2.The both sides plating conductive layer 303,304 of electro-optic crystal 302 is the indium sheet among the figure, and 305 is the planar shaped sheet metal.306 is compressible spring, and 307 is external electrode.Add the high voltage pulse signal in the two sides of crystal, the crystal optical direction is vertical with direction of an electric field.Can adopt the crystal of kind electrode connected mode that LiNbO3 is arranged, BBO, KTP, RTP etc.
Example 2 embodiments 2 of the present utility model are referring to accompanying drawing 3.Different with specific embodiment 1, the quantity of the electro-optic crystal in the specific embodiment 2 is two, is respectively 202a and 202b. generally, and these two crystal are optically contacted, in parallel on the electricity, the adjacent logical light face of two crystal place 208 is full of air or index-matching fluid.Adopt two crystal not only can compensate the additive phase delay that natural birefringence produces, can also reduce half-wave voltage pro rata.The another kind distortion of two crystal series connection structures is referring to accompanying drawing 4.Accompanying drawing 4 is identical on electrode connection mode with accompanying drawing 3, and difference is: in Fig. 4, electro- optic crystal 202a and 202b couple together by the optical cement mode, and 208 is the optical cement face.Can adopt the electro-optic crystal of this two-rod series connection mode that BBO is arranged, KTP and RTP etc.
Example 3 the utility model can also be used in the electrooptical switching of vertical application, as shown in Figure 6.Among Fig. 6, the side of electro-optic crystal 202 need not to plate conductive metal layer 203.Endless metal thin electrode 205 electrodes are respectively overlapped at electro-optic crystal crystal two ends.Indium sheet 203 is packed between electro-optic crystal and the endless metal thin electrode, and compressible spring 206 couples together annular flake metal electrode and external electrode 207.The direction of high voltage pulse electric field is parallel with the crystal optical direction.Can use the crystal of this application mode that DKDP etc. is arranged.
Claims (4)
1. electrooptical switching, comprise housing (201), electro-optic crystal (202) and metal conducting layer (203), it is characterized in that: be stained with indium foil (204) in metal conducting layer (203) outside, indium foil (204) outside is glued with sheet metal (205), and external electrode (207) is connected with sheet metal (205) by compressible spring (206).
2. as right 1 described electrooptical switching, it is characterized in that: described electro-optic crystal (202) is horizontal application mode or vertical application mode.
3. as right 1 described electrooptical switching, it is characterized in that: described electro-optic crystal (202) is monolithic crystal or polylith serial connection.
4. as right 1 or 2 or 3 described electrooptical switchinges, it is characterized in that: electro-optic crystal (202) can be BBO, also can be DKDP, LiNbO
3, monocrystalline such as RTP or KTP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200062200U CN201060337Y (en) | 2007-01-30 | 2007-01-30 | Electrooptical switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200062200U CN201060337Y (en) | 2007-01-30 | 2007-01-30 | Electrooptical switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060337Y true CN201060337Y (en) | 2008-05-14 |
Family
ID=39408819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200062200U Expired - Fee Related CN201060337Y (en) | 2007-01-30 | 2007-01-30 | Electrooptical switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060337Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291994A (en) * | 2015-05-21 | 2017-01-04 | 深圳市吉斯迪科技有限公司 | A kind of electro-medical luminescent crystal |
| CN107577066A (en) * | 2016-11-14 | 2018-01-12 | 北京莱泽光电技术有限公司 | A kind of electro-optic switching devices |
-
2007
- 2007-01-30 CN CNU2007200062200U patent/CN201060337Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106291994A (en) * | 2015-05-21 | 2017-01-04 | 深圳市吉斯迪科技有限公司 | A kind of electro-medical luminescent crystal |
| CN106291994B (en) * | 2015-05-21 | 2018-12-11 | 深圳市吉斯迪科技有限公司 | A kind of medical electro-optic crystal |
| CN107577066A (en) * | 2016-11-14 | 2018-01-12 | 北京莱泽光电技术有限公司 | A kind of electro-optic switching devices |
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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: 20080514 Termination date: 20120130 |