CN2310403Y - High-resolution raster cavity selective sublaser - Google Patents
High-resolution raster cavity selective sublaser Download PDFInfo
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- CN2310403Y CN2310403Y CN 97220378 CN97220378U CN2310403Y CN 2310403 Y CN2310403 Y CN 2310403Y CN 97220378 CN97220378 CN 97220378 CN 97220378 U CN97220378 U CN 97220378U CN 2310403 Y CN2310403 Y CN 2310403Y
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- laser
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- raster
- curvature
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Abstract
The utility model discloses a raster cavity selective branch laser with fine resolution. The utility model is sequentially provided with a spherical reflecting mirror, a laser discharging tube, and a plane flash raster. The plane flash raster is arranged on a turntable; a raster cavity is composed of the spherical reflecting mirror and the plane flash raster. The utility model which has the advantages of reasonable structure, convenient manufacture, and fine resolution is suitable for all series of lasers with output of discrete spectrum line or quasi-continuous spectrum line, such as CO <2>, CO, N <2> O, quasi-molecule far infrared lasers, organic dye and inorganic liquid lasers, and semiconductor lasers.
Description
The utility model relates to laser, relates in particular to high-resolution grating chamber and selects sublaser.
Usually resemble CO
2, CO, N
2O equimolecular gas tunable laser and dye liquid tunable laser etc. all adopt grating chamber principle to implement the selection of spectral line.The grating chamber is dodged the grating that jumps by a spherical reflector and a plane and is constituted.One of topmost parameter that the sublaser performance is selected in evaluation grating chamber is its spectral line resolution, and promptly the distinguishable minimum wavelength of tunable laser at interval.
The purpose of this utility model provides a kind of rational in infrastructure, and sublaser is selected in high-resolution grating chamber easy to make.
The utility model is taked following measures in order to achieve the above object: it has spherical reflector successively, and the grating that jumps is dodged on laser tube and plane, and plane grating places on the turntable.
The utility model is rational in infrastructure, easy to make, resolution is high, can be applicable to the laser of all discrete spectral lines with series or the output of quasi-continuous spectral line, as CO
2, CO, N
2O, quasi-molecule, far infrared laser, organic dyestuff and inorganic liquid laser, and semiconductor laser.
Elaborate below in conjunction with accompanying drawing.
Fig. 1 is that the sublaser structural representation is selected in high-resolution grating chamber;
Fig. 2 is a choosing principle analysis figure.
Sublaser is selected in high-resolution grating chamber, has spherical reflector 1 successively, and the grating 3 that jumps is dodged on laser tube 2 and plane, and plane grating 3 places on the turntable 4, and rotational plane dodges the grating that jumps, and implements the selection in grating chamber.
Laser tube is CO
2The laser discharge tube, the radius of curvature R of spherical reflector=3～7m then, CO laser discharge tube, the radius of curvature R of spherical reflector=4～10m then, dye laser, the radius of curvature R of spherical reflector=8～12m then, N
2O laser discharge tube, the then radius of curvature R of spherical reflector=7～13m.Laser tube is CO
2The laser discharge tube, the radius of curvature R=5m of spherical reflector then, CO laser discharge tube, the radius of curvature R=7m of spherical reflector then, dye laser, the radius of curvature R=10m of spherical reflector then, N
2O laser discharge tube, the then radius of curvature R=9m of spherical reflector.
The utility model shows to have the optical field distribution that is entirely identical to common flat-concave cavity for the oscillation light that satisfies central wavelength lambda o in the grating chamber, and for the light that departs from λ o wavelength, be the equal of the cavity mistuning loss by theory analysis.Therefore, the utility model is thought, if the grating chamber of a certain configuration has high cavity mistuning sensitivity, just means that this chamber has high spectral line resolution, promptly has good distinguishable minimum wavelength ability at interval.
Dodging by the plane in the grating chamber that grating and spherical mirror constituted that jumps, for the light of off-center wavelength X o, the situation when the optical field distribution form the chamber in is equivalent to common flat-concave cavity imbalance, process is propped up in the choosing of grating accent, is equivalent to the accent process of changing of level crossing.According to the viewpoint of " keeping the basic mode vibration ", as long as the basic mode hot spot remains in the effective dimensions scope of speculum, this basic mode still can be kept vibration, thereby using with this is the tolerance limit of flat-concave cavity imbalance.The effective radius of supposing speculum is a, and the spot radius of basic mode on speculum is ω
s, by the viewpoint of " keeping the basic mode vibration ", the maximum of level crossing (grating) is allowed inclination angle [theta]
Max(see figure 1) is:
θ
Max=a-ω
sIn/R (1) formula, R is the radius of curvature of spherical reflector.The differential grating equation of deriving again according to the utility model:
In δ=Δ λ/2dcos α (2) formula, δ is the grating inclination angle, the tuning angle when promptly choosing is propped up, and d is a grating constant, α is that grating dodges the angle that jumps.Make δ=θ
MaxSituation under, obtain:
Δ λ=2d (a-ω
s/ R) in cos α (3) formula, Δ λ promptly be the distinguishable minimum wavelength in grating chamber at interval.By formula (3) choose the radius of curvature of spherical reflector, for example, and CO
2The spectral line R (46) that 00 ° 1～02 ° 0 R of molecular laser props up transition is 7nm with R (48) and wavelength interval Δ λ, and by formula (3) will make the grating chamber select sublaser can tell this two spectral lines, and the radius of curvature R of the spherical reflector in grating chamber is 5m.
Claims (3)
1. sublaser is selected in a high-resolution grating chamber, it is characterized in that it has spherical reflector [1] successively, and the grating [3] that jumps is dodged on laser tube [2] and plane, and plane grating [3] places on the turntable [4].
2. sublaser is selected in a kind of high-resolution grating according to claim 1 chamber, it is characterized in that said laser tube is CO
2The laser discharge tube, the radius of curvature R of spherical reflector=3～7m then, CO laser discharge tube, the radius of curvature R of spherical reflector=4～10m then, dye laser, the radius of curvature R of spherical reflector=8～12m then, N
2O laser discharge tube, the then radius of curvature R of spherical reflector=7～13m.
3. sublaser is selected in a kind of high-resolution grating according to claim 1 and 2 chamber, it is characterized in that said laser tube is CO
2The laser discharge tube, the radius of curvature R=5m of spherical reflector then, CO laser discharge tube, the radius of curvature R=7m of spherical reflector then, dye laser, the radius of curvature R=10m of spherical reflector then, N
2O laser discharge tube, the then radius of curvature R=9m of spherical reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220378 CN2310403Y (en) | 1997-07-09 | 1997-07-09 | High-resolution raster cavity selective sublaser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97220378 CN2310403Y (en) | 1997-07-09 | 1997-07-09 | High-resolution raster cavity selective sublaser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2310403Y true CN2310403Y (en) | 1999-03-10 |
Family
ID=33936074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97220378 Expired - Fee Related CN2310403Y (en) | 1997-07-09 | 1997-07-09 | High-resolution raster cavity selective sublaser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2310403Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466402C (en) * | 2006-05-12 | 2009-03-04 | 中国科学院电子学研究所 | Grating-selected quick tuning laser resonant cavity |
| CN103762488A (en) * | 2014-01-15 | 2014-04-30 | 江苏师范大学 | High power narrow linewidth tunable laser |
| CN103794978A (en) * | 2014-01-15 | 2014-05-14 | 江苏师范大学 | High-power narrow-linewidth tunable laser device using quadric surface mirror |
| CN106911064A (en) * | 2015-12-22 | 2017-06-30 | 中国科学院大连化学物理研究所 | Phase compensation type rastering laser resonator |
-
1997
- 1997-07-09 CN CN 97220378 patent/CN2310403Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466402C (en) * | 2006-05-12 | 2009-03-04 | 中国科学院电子学研究所 | Grating-selected quick tuning laser resonant cavity |
| CN103762488A (en) * | 2014-01-15 | 2014-04-30 | 江苏师范大学 | High power narrow linewidth tunable laser |
| CN103794978A (en) * | 2014-01-15 | 2014-05-14 | 江苏师范大学 | High-power narrow-linewidth tunable laser device using quadric surface mirror |
| CN103762488B (en) * | 2014-01-15 | 2016-03-30 | 江苏师范大学 | High power narrow line width regulatable laser |
| CN103794978B (en) * | 2014-01-15 | 2016-04-06 | 江苏师范大学 | A kind of high power narrow line width regulatable laser using quadratic surface mirror |
| CN106911064A (en) * | 2015-12-22 | 2017-06-30 | 中国科学院大连化学物理研究所 | Phase compensation type rastering laser resonator |
| CN106911064B (en) * | 2015-12-22 | 2019-11-12 | 中国科学院大连化学物理研究所 | Phase compensation type rastering laser resonant cavity |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |
Granted publication date: 1999.03.10 |