CN86202164U - Focus and focus-out laser cavity - Google Patents
Focus and focus-out laser cavity Download PDFInfo
- Publication number
- CN86202164U CN86202164U CN 86202164 CN86202164U CN86202164U CN 86202164 U CN86202164 U CN 86202164U CN 86202164 CN86202164 CN 86202164 CN 86202164 U CN86202164 U CN 86202164U CN 86202164 U CN86202164 U CN 86202164U
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- focus
- laser
- laser cavity
- out laser
- cavity
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Abstract
The utility model relates to a focus and focus out laser cavity which belongs to the technical field of lasers. A lens having multilayer dielectric films with the function of reflection increasing is used to replace the partially reflecting mirror or applied focus and focus out optical systems of an ordinary laser cavity. A laser composed of the focus and focus out laser cavity can directly output the focus or focus out laser beams. By using the focus and focus out laser cavity, all the laser power which is output by the lasers can be in practical application. The utility model has the advantages of compact structure, convenient operation, low cost, etc., and can be widely applied to the fields of laser medicine, laser processing, laser breeding, etc.
Description
Gather, defocus laser cavity and belong to field of lasers.The laser cavity of laser is the core of laser, and it provides the persistent oscillation of bulk of optical feedback with the formation stimulated emission, and the direction and the frequency of vibration light beam limited, to guarantee the performance of outgoing laser beam.Laser cavity is made up of two optical mirrors with certain curvature radius usually, and one of them is a completely reflecting mirror, and another is a partially reflecting mirror.That part of vibration luminous energy that is transmitted by partially reflecting mirror is exactly said laser emission, and it is near the parallel good Gaussian beam of monochromaticjty.But the laser beam that focuses on or defocus for some application request is to obtain required power density.All require to adopt the laser beam that focuses on or defocus at large as aspects such as laser medicine, laser processing, breedings with laser.In order to satisfy the requirement of this respect, all adopt the focusing of outer processing or the optical system that defocuses at present both at home and abroad.The major defect of this device is: the insertion loss that reflection, absorption of optical system etc. brings is gathered, defocused in (1), makes the power output of laser can not all be used for practical application; (2) cost and the size of equipment have been increased; (3) use troublesome poeration etc.
The objective of the invention is to create a kind of laser beam that can directly export focusing or defocus by laser, to overcome the shortcoming of present device.For this reason, we propose the partially reflecting mirror of laser cavity and focusing that adds or the optical system that defocuses, with one have necessarily increase reflection (reflectivity is between 70%～95%) quite the multilayer dielectric film of wave band (as MgF, ZnS etc.) plano-convex (or concavo-convex), or the replacement of plano-concave (or concavo-concave) lens, it has partially reflecting mirror concurrently and adds the function that focuses on or defocus optical system.We have realized in experiment, and acquisition expected results: form laser by this laser cavity and can directly export the laser beam that focuses on or defocus, saved to add and focused on or optical system that defocuses and the insertion loss that brings thereof, make the apparatus structure compactness, use easy to operate, and make cost than general reduction by 1/3rd.We have consulted " world patent abstract magazine " R (WPA) that Britain Derwent company publishes
4-R
5, the U-V fascicle will all find no similar patent to the end of the year 1984.
As scheming: 1, completely reflecting mirror; 2, laser tube; 3, band increases the lens of anti-film.Experiment is given an example: focus on continuous CO
2Laser, the long 30cm of laser tube (2), completely reflecting mirror (1) reflectivity is 99%, it is that its reflectivity of Ge-Zns multilayer dielectric film is 86% that planoconvex spotlight (3) increases anti-film.Output focal spot power is greater than 8 watts, and electro-optical efficiency is between 12%～15%.
Claims (2)
1, a kind of by completely reflecting mirror (1), laser tube (2), the laser cavity formed, it is characterized in that lens (3) in addition.
2, by the said laser cavity of claim 1, it is characterized in that lens (3) are to be coated with the multilayer dielectric film that increases reflection, its reflectivity is between 70～95%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86202164 CN86202164U (en) | 1986-04-14 | 1986-04-14 | Focus and focus-out laser cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86202164 CN86202164U (en) | 1986-04-14 | 1986-04-14 | Focus and focus-out laser cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86202164U true CN86202164U (en) | 1986-12-31 |
Family
ID=4805758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86202164 Withdrawn CN86202164U (en) | 1986-04-14 | 1986-04-14 | Focus and focus-out laser cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86202164U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332541B (en) * | 2008-08-06 | 2011-09-07 | 中国航空工业第一集团公司北京航空制造工程研究所 | Short burst laser cleaning method of metal surface |
| CN105215548A (en) * | 2015-10-26 | 2016-01-06 | 惠州市杰普特电子技术有限公司 | Laser soldering device |
-
1986
- 1986-04-14 CN CN 86202164 patent/CN86202164U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332541B (en) * | 2008-08-06 | 2011-09-07 | 中国航空工业第一集团公司北京航空制造工程研究所 | Short burst laser cleaning method of metal surface |
| CN105215548A (en) * | 2015-10-26 | 2016-01-06 | 惠州市杰普特电子技术有限公司 | Laser soldering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |