CN102607520B - Device for detecting inclination angle and inclination direction of laser crystal - Google Patents
Device for detecting inclination angle and inclination direction of laser crystal Download PDFInfo
- Publication number
- CN102607520B CN102607520B CN201210080237.6A CN201210080237A CN102607520B CN 102607520 B CN102607520 B CN 102607520B CN 201210080237 A CN201210080237 A CN 201210080237A CN 102607520 B CN102607520 B CN 102607520B
- Authority
- CN
- China
- Prior art keywords
- diaphragm
- laser crystal
- double
- layer
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Testing Of Optical Devices Or Fibers (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention provides a device for detecting the inclination angle and the inclination direction of a laser crystal. The device comprises a laser device and a double-layer diaphragm, wherein the laser device can give out visible light, the double-layer diaphragm comprises a first layer of diaphragm and a second layer of diaphragm which are provided with a common hole, the second layer of diaphragm is fixed and is provided with the angle scales of 0-360 degrees around the center hole, the first layer of diaphragm can rotate around the common hole and is provided with a staff gauge extending to the periphery from the hole, and the visible light emitted by the laser device can penetrate through the hole of the double-layer diaphragm and enter the end surface of the laser device to be detected.
Description
Technical field
The present invention relates to the device of a kind of detection laser crystal tilting angle and vergence direction.
Background technology
For a complicated laser system, the residual reflection of optical element surface is the necessary condition that self-sustained oscillation forms vibration chamber, if having enough gains will form self-sustained oscillation in vibration chamber.What plated conventionally at medium two ends is high transmittance film, and transmissivity can not reach 100%, always has the reflection of some remnants, and laser forms self-sustained oscillation at medium two ends multiple reflections.In high-gain Multi-pass laser amplifier, self-sustained oscillation has consumed a large amount of reversion particles, when laser passes through this laser medium again, there will be inverted population in laser medium tail off and occur gaining inadequate situation.On the other hand, the intensity laser that self-sustained oscillation produces can cause crushing damage to optical element.In order to prevent the generation of self-sustained oscillation phenomenon, it (is laser crystal angle of inclination that the end face of laser crystal has low-angle inclination angle with respect to its main shaft conventionally, for example rod tilts 2 °, 3 °), meanwhile, the vergence direction of laser crystal end face (being the vergence direction of laser crystal) also has clear and definite requirement.
Therefore,, in the mass production of complicated laser amplifier, need the device of a kind of detection laser crystal tilting angle and vergence direction, to guarantee that angle of inclination and the vergence direction of laser crystal meets actual needs.
Summary of the invention
Therefore, the object of the present invention is to provide the device of a kind of detection laser crystal tilting angle and vergence direction.
The device of detection laser crystal tilting angle provided by the invention and vergence direction comprises:
Can send the laser instrument of visible ray;
Double-deck diaphragm, comprise ground floor diaphragm and second layer diaphragm, ground floor diaphragm and second layer diaphragm have common hole, wherein second layer diaphragm is fixed, and around center pit, there is the angle index of 0 °-360 °, ground floor diaphragm can rotate around this common hole, and on it, has the scale extending towards periphery from this hole, and the visible ray that described laser instrument sends is through the hole of double-deck diaphragm.
According to device provided by the invention, this scale indicating length wherein, and point to the angle index on second layer diaphragm.
According to device provided by the invention, wherein said ground floor diaphragm is circle or bar shaped.
According to device provided by the invention, wherein said second layer diaphragm is circular.
The present invention also provides a kind of method of utilizing said apparatus detection laser crystal tilting angle and vergence direction, comprising:
1) make to be parallel to the main shaft of laser crystal to be detected through the exit direction of the visible ray in the hole of double-deck diaphragm, and this visible ray is incided on the end face of testing laser crystal;
2) rotate the ground floor diaphragm of double-deck diaphragm, its scale is overlapped with return the formed hot spot of ground floor diaphragm from described end face reflection, the angle index on scale second layer diaphragm pointed is the vergence direction of laser crystal;
3) hole and the visible ray of measuring double-deck diaphragm incide the distance L between the incidence point on laser crystal, and measure the distance H between described hot spot and the hole of double-deck diaphragm, utilize formula
calculate the angle of inclination of laser crystal.
According to detection method provided by the invention, step 2 wherein) also comprise, if the vergence direction recording and required direction are not inconsistent, rotate ground floor diaphragm, make its scale point to the scale corresponding to required angle of second layer circular iris, around the main shaft rotary laser crystal of laser crystal, described hot spot is overlapped with scale again.
The device of detection laser crystal tilting angle provided by the invention and vergence direction, easy and simple to handle and very easily realization, accurately detection laser crystal tilting angle and vergence direction, also can adjust to the inclination angle of laser crystal any required direction accurately.
Accompanying drawing explanation
Referring to accompanying drawing, embodiments of the present invention is further illustrated, wherein:
The structural representation that Fig. 1 is the pick-up unit that provides according to embodiments of the invention;
Fig. 2 is the local enlarged diagram of the double-deck diaphragm in Fig. 1;
The schematic diagram of the method that Fig. 3 is the collimation laser that provides according to embodiments of the invention;
The schematic diagram that Fig. 4 is the detection method that provides according to embodiments of the invention;
The principle schematic that Fig. 5 is the detection method that provides according to embodiments of the invention.
Embodiment
It is bar-shaped that laser crystal is generally, in this manual, " main shaft " refers to the vertical central axis of laser crystal, the normal direction of " angle of inclination " finger tip face and the angle between major axes orientation, and the normal of " vergence direction " finger tip face projects to perpendicular to the direction in the plane of main shaft.
The device that a kind of detection laser crystal tilting angle and vergence direction are provided according to one embodiment of present invention, its structure as shown in Figure 1, comprises
Double-deck diaphragm 2, the structural representation of its amplification as shown in Figure 2, there is concentric ground floor circular iris 21 and second layer circular iris 22, ground floor circular iris 21 and second layer circular iris 22 have common center pit 20, wherein second layer circular iris 22 is fixing, and on its circumference, there is the angle index of 0 °-360 °, ground floor circular iris 21 can be around 20 rotations of common center pit, and on it, there is the scale extending from center pit 20 to circumference, this scale can indicating length, and points to the angle index on second layer circular iris 22 circumference;
Wherein the position of laser instrument 1 and double-deck diaphragm 2 is adjustable, and the visible ray that laser instrument 1 sends passes the center pit 20 of double-deck diaphragm 2, and incides on the end face of laser crystal to be detected 3.
The following describes the detection method of the device of detection laser crystal tilting angle that the present embodiment provides and vergence direction, for example, need whether the pitch angle of detection laser crystal is 3 °, whether vergence direction meets the requirement of inclination vertically upward, and the device that the present embodiment provides detects according to following detection method:
1) make to be parallel to through the exit direction of the visible ray of the center pit of double-deck diaphragm the main shaft of laser crystal to be detected, concrete steps comprise: as shown in Figure 3, in the light path of visible ray, place diaphragm 4 and diaphragm 5, make diaphragm 4 high consistent with the center of the device of clamping testing laser crystal 3 with the aperture on diaphragm 5, thereby diaphragm 4 and the definite straight line of diaphragm 5 are overlapped with the main shaft of laser crystal; Adjust the position of laser instrument 1 and double-deck diaphragm 2, make from the visible ray of double-deck diaphragm outgoing successively by the aperture of diaphragm 4 and diaphragm 5; Remove diaphragm 4 and diaphragm 5, on the device of clamping testing laser crystal 3, put laser crystal 3, thereby make to be parallel to through the exit direction of the visible ray of the center pit of double-deck diaphragm the main shaft of laser crystal to be detected;
2) as shown in Figure 4, visible ray is through the center pit of double-deck diaphragm and by after the end face reflection of laser crystal, incide on ground floor circular iris 21 and form hot spot, because the end face of laser crystal exists, therefore this hot spot departs from center pit, first rotate the ground floor circular iris 21 of double-deck diaphragm, its scale is overlapped with this hot spot, now read the angle index on scale second layer circular iris 22 pointed, 90 ° if, the vergence direction that this laser crystal is described meets the requirements, if this hot spot does not overlap with described scale, the vergence direction that this laser crystal is described is undesirable, need to rotate ground floor circular iris 21, make its scale point to 90 ° of angle indexs on second layer circular iris 22, again around the main shaft rotary laser crystal of laser crystal 3, this hot spot is overlapped with scale, thereby the vergence direction that makes this laser crystal meets requirement vertically upward,
3) center pit and the visible ray of measuring double-deck diaphragm incide the distance L between the incidence point on laser crystal, and measure the distance H between above-mentioned hot spot and the center pit of double-deck diaphragm, utilize formula
calculate the angle of inclination of laser crystal;
4) whether the angle of inclination that judgement records is 3 °.
In order to illustrate in greater detail the derivation of this formula, Fig. 5 shows the local enlarged diagram of laser crystal end region.Geometry from Fig. 5 can be released, H=L tg2 θ, therefore
In the present embodiment, record L=50mm, H=5.25mm, the numerical value that this is recorded is brought formula into
calculate to obtain 3 ° of θ ≈, thereby learn that this laser crystal to be detected meets the requirements.
According to one embodiment of present invention, wherein ground floor diaphragm also can be for other shapes, such as bar shaped, this bar shaped diaphragm can rotate around center pit, and has scale on it, and described center pit can be through the center of bar shaped, also can only pass a side of bar shaped, needle-like while being.
According to one embodiment of present invention, wherein ground floor diaphragm can be also other shapes, for example square, as long as its inside has the circumference with angle index.
According to one embodiment of present invention, wherein in detection, except above-mentioned steps 1) described in method, also can adopt additive method to make to be parallel to through the exit direction of the visible ray of the center pit of double-deck diaphragm the main shaft of laser crystal to be detected.
Utilize device provided by the invention, accurately the angle of inclination of detection laser crystal and vergence direction, also can adjust to the inclination angle of laser crystal any required direction accurately.
Device of the present invention also can be used for detecting in other field angle of inclination and the vergence direction with the crystal at inclination angle.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described.Although the present invention is had been described in detail with reference to embodiment, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is modified or is equal to replacement, do not depart from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (8)
1. a device for detection laser crystal tilting angle and vergence direction, comprising:
Can send the laser instrument of visible ray;
Double-deck diaphragm, comprise ground floor diaphragm and second layer diaphragm, ground floor diaphragm and second layer diaphragm have common hole, wherein second layer diaphragm is fixed, and around center pit, there is the angle index of 0 °-360 °, ground floor diaphragm can rotate around this common hole, and on it, has the scale extending towards periphery from this hole, and the visible ray that described laser instrument sends is through the hole of double-deck diaphragm.
2. device according to claim 1, this scale indicating length wherein, and point to the angle index on second layer diaphragm.
3. device according to claim 1, wherein said ground floor diaphragm is circle or bar shaped.
4. device according to claim 1, wherein said second layer diaphragm is circular.
5. device according to claim 1, the position of wherein said laser instrument is adjustable.
6. device according to claim 1, the position of wherein said double-deck diaphragm is adjustable.
7. a method of utilizing device detection laser crystal tilting angle according to claim 1 and vergence direction, comprising:
1) make to be parallel to the main shaft of laser crystal to be detected through the exit direction of the visible ray in the hole of double-deck diaphragm, and this visible ray is incided on the end face of testing laser crystal;
2) rotate the ground floor diaphragm of double-deck diaphragm, its scale is overlapped with return the formed hot spot of ground floor diaphragm from described end face reflection, the angle index on scale second layer diaphragm pointed is the vergence direction of laser crystal;
3) hole and the visible ray of measuring double-deck diaphragm incide the distance L between the incidence point on laser crystal, and measure the distance H between described hot spot and the hole of double-deck diaphragm, utilize formula
calculate the angle of inclination of laser crystal.
8. method according to claim 7, step 2 wherein) also comprise, if the vergence direction recording and required direction are not inconsistent, rotate ground floor diaphragm, make its scale point to the scale corresponding to required angle of second layer circular iris, around the main shaft rotary laser crystal of laser crystal, described hot spot is overlapped with scale again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210080237.6A CN102607520B (en) | 2012-03-23 | 2012-03-23 | Device for detecting inclination angle and inclination direction of laser crystal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210080237.6A CN102607520B (en) | 2012-03-23 | 2012-03-23 | Device for detecting inclination angle and inclination direction of laser crystal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102607520A CN102607520A (en) | 2012-07-25 |
| CN102607520B true CN102607520B (en) | 2014-03-26 |
Family
ID=46525125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210080237.6A Expired - Fee Related CN102607520B (en) | 2012-03-23 | 2012-03-23 | Device for detecting inclination angle and inclination direction of laser crystal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102607520B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110936506A (en) * | 2019-12-09 | 2020-03-31 | 济南晶众光电科技有限公司 | DKDP crystal automatic rod rotating machine and processing technology |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107402061B (en) * | 2017-06-29 | 2019-09-03 | 西安知微传感技术有限公司 | Resonant mode scanning mirror amplitude measurement system and method |
| CN108955880B (en) * | 2018-06-08 | 2020-12-22 | 中国科学院合肥物质科学研究院 | Coaxiality calibration method for high-precision ultraviolet double-grating spectrometer |
| CN108555438B (en) * | 2018-07-06 | 2024-05-10 | 温州大学激光与光电智能制造研究院 | Fundamental frequency and frequency doubling switching system and method for laser processing |
| CN108871736A (en) * | 2018-07-11 | 2018-11-23 | 苏州天步光电技术有限公司 | A kind of 45 degree of angle detection devices of optical device plane |
| CN115031692B (en) * | 2022-08-10 | 2022-11-25 | 深圳珑璟光电科技有限公司 | Method for measuring vertical deviation angle and electronic equipment |
| CN115540838B (en) * | 2022-12-01 | 2023-03-10 | 中煤科工西安研究院(集团)有限公司 | Precision testing method for rod feeding recognition system of coal mine underground drill rod loading and unloading robot |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415344Y (en) * | 1999-12-27 | 2001-01-17 | 朱志刚 | Laser measuring locator |
| CN101149258A (en) * | 2006-09-20 | 2008-03-26 | 约翰尼斯海登海恩博士股份有限公司 | Rotary encoder and method of its manufacture |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001336952A (en) * | 2000-05-26 | 2001-12-07 | Canon Inc | Measuring apparatus |
| US20060213069A1 (en) * | 2005-03-25 | 2006-09-28 | Johnny Martin | Laser protractor |
| CN101025477A (en) * | 2006-02-22 | 2007-08-29 | 中国电子科技集团公司第四十一研究所 | High-precision quartz wave-plate stack bonding method |
| JP2007315934A (en) * | 2006-05-26 | 2007-12-06 | Toyo Techno Kk | Laser beam receiver and method of measuring difference in height direction using same laser beam receiver |
| CN102279094B (en) * | 2011-03-16 | 2013-04-17 | 中国科学院上海技术物理研究所 | Apparatus and method for calibrating transmission axis of polaroid |
-
2012
- 2012-03-23 CN CN201210080237.6A patent/CN102607520B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2415344Y (en) * | 1999-12-27 | 2001-01-17 | 朱志刚 | Laser measuring locator |
| CN101149258A (en) * | 2006-09-20 | 2008-03-26 | 约翰尼斯海登海恩博士股份有限公司 | Rotary encoder and method of its manufacture |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2007-315934A 2007.12.06 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110936506A (en) * | 2019-12-09 | 2020-03-31 | 济南晶众光电科技有限公司 | DKDP crystal automatic rod rotating machine and processing technology |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102607520A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102607520B (en) | Device for detecting inclination angle and inclination direction of laser crystal | |
| CN202471018U (en) | Large-caliber plane mirror surface shape detecting device | |
| CN101706426B (en) | Refractive index measuring instrument for transparent material with Brewster angle | |
| CN102564340A (en) | Large-caliber plane mirror surface-shaped detection device | |
| CN107907561A (en) | The device and measuring method of multipath reflection laser optical lever metal linear expansion coefficient measurement | |
| CN103759675B (en) | A kind of synchronization detecting method for optical element aspheric surface micro structure | |
| CN103424363B (en) | Non-rotating optically-active solution measuring instrument and adopt this measuring instrument to measure the method for optically-active solution specific rotation | |
| CN106289085B (en) | Axis intersection test device and method | |
| CN102590092A (en) | Absorption optical path lengthening device and method for laser absorption spectroscopy technology | |
| CN205102785U (en) | Device that lens center is thick is measured to non -contact method | |
| CN206459630U (en) | A kind of cylinder jacket critical size self-operated measuring unit | |
| CN106802232A (en) | A kind of microcobjective numerical aperture measuring method and system based on total reflection | |
| CN203241000U (en) | Bottle mouth inner diameter measuring device of gas bottle | |
| CN205843616U (en) | A kind of portable bar horizontal metroscope | |
| CN103630090B (en) | High resolution double shaft autocollimator system | |
| CN109443139A (en) | The pod line style method of inspection | |
| CN104344780A (en) | Roller-type clearance measurement device | |
| CN205028044U (en) | Wrist -watch wheel piece detector | |
| CN204346951U (en) | For the measuring equipment of the parameter detection device and material ash content that calculate material ash content | |
| CN206574363U (en) | A kind of light polarization rotation test instrument | |
| CN209371965U (en) | A kind of swing rod detection instrument for measuring with arc groove Workpiece's Arc Radius | |
| CN101625233B (en) | Installation detecting system of cleaning scraper blade | |
| CN104101481B (en) | A kind of eyeglass scattering optical detector with double light path | |
| CN201698630U (en) | Spatial light reflection experimental demonstration instrument | |
| CN205679289U (en) | Probe of ultrasonic flowmeter support |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20200323 |