GB1268407A - Improvements relating to lasers - Google Patents
Improvements relating to lasersInfo
- Publication number
- GB1268407A GB1268407A GB60657/69A GB6065769A GB1268407A GB 1268407 A GB1268407 A GB 1268407A GB 60657/69 A GB60657/69 A GB 60657/69A GB 6065769 A GB6065769 A GB 6065769A GB 1268407 A GB1268407 A GB 1268407A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mirror
- output
- laser
- optical axis
- output beam
- 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
Links
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract 2
- 230000003287 optical effect Effects 0.000 abstract 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract 1
- 239000001569 carbon dioxide Substances 0.000 abstract 1
- 229910052732 germanium Inorganic materials 0.000 abstract 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 abstract 1
- 238000012544 monitoring process Methods 0.000 abstract 1
- 238000002310 reflectometry Methods 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/4257—Photometry, e.g. photographic exposure meter using electric radiation detectors applied to monitoring the characteristics of a beam, e.g. laser beam, headlamp beam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/705—Beam measuring device
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Lasers (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
1,268,407. Lasers. FERRANTI Ltd. 6 Nov., 1970 [12 Dec., 1969], No. 60657/69. Heading H1C. The partially transmissive output mirror 10 of a laser provides both a main output beam 14 and a focused secondary output beam 15, each output extending along a different path. The main output beam comprises the major portion of the generated power, the secondary output being obtained by reflection between the non- parallel major surfaces 11, 13 of the mirror and used for monitoring purposes, e.g. by a detector located at the focal point 16. The distance of the focal point from the mirror may be reduced by using a concave reflector 17. The non-parallel major surfaces 11, 13 of the mirror may be either concave, as shown, or planar, the surface 11 being normal to the optical axis 12 of the laser, while the surface 13 has its centre of curvature (or normal in the planar case) on a line which intersects the optical axis at the surface 11 by a small angle such as 4 degrees. The power of the secondary beam is determined by the relative reflectivities of the two surfaces 11, 13. For a carbon dioxide laser the mirror may be formed of germanium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB60657/69A GB1268407A (en) | 1969-12-12 | 1969-12-12 | Improvements relating to lasers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB60657/69A GB1268407A (en) | 1969-12-12 | 1969-12-12 | Improvements relating to lasers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1268407A true GB1268407A (en) | 1972-03-29 |
Family
ID=10485896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB60657/69A Expired GB1268407A (en) | 1969-12-12 | 1969-12-12 | Improvements relating to lasers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1268407A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0236008A1 (en) * | 1986-02-22 | 1987-09-09 | Austin Rover Group Limited | Monitoring a laser beam |
| EP0860267A2 (en) * | 1988-04-18 | 1998-08-26 | 3D Systems, Inc. | Stereolithographic beam profiling |
-
1969
- 1969-12-12 GB GB60657/69A patent/GB1268407A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0236008A1 (en) * | 1986-02-22 | 1987-09-09 | Austin Rover Group Limited | Monitoring a laser beam |
| EP0860267A2 (en) * | 1988-04-18 | 1998-08-26 | 3D Systems, Inc. | Stereolithographic beam profiling |
| EP0860267A3 (en) * | 1988-04-18 | 1999-01-20 | 3D Systems, Inc. | Stereolithographic beam profiling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2070490A (en) | Laser cutting apparatus | |
| JPH0412039B2 (en) | ||
| JPS5248331A (en) | Scanning system with light beam | |
| EP0025594B1 (en) | Axis-monitoring apparatus for a laser beam | |
| GB1171689A (en) | Sampling Arrangement for Laser-Raman Systems | |
| JPS6448692A (en) | Multifocusing laser beam condensing device | |
| FR2517131B1 (en) | DEVICE FOR VARIING THE POWER OF A LASER | |
| GB1439226A (en) | Optical scanning arrangement | |
| GB1268407A (en) | Improvements relating to lasers | |
| ATE35235T1 (en) | MANIPULATOR. | |
| JPS5737893A (en) | Semiconductor laser | |
| DE3269905D1 (en) | Reflection light barrier with an extended detection range | |
| GB1097665A (en) | Improved lasing system | |
| JPS56165937A (en) | Optical recorder and reproducer | |
| ES523159A0 (en) | OPTICAL DEVICE INTENDED TO BE ASSOCIATED WITH A SOURCE OF A RADIATION BEAM IN AN IRRADIATION DEVICE. | |
| GB1319307A (en) | Optical systems | |
| JPS6053848B2 (en) | Beam concentrator | |
| GB1062856A (en) | Laser system | |
| GB1072244A (en) | A monochromatic optical maser | |
| US3542478A (en) | Laser autocollimator | |
| JPH0241607Y2 (en) | ||
| JPS5710284A (en) | Laser device | |
| GB1335636A (en) | Apparatus for measuring rotation | |
| JPS5852545Y2 (en) | light wave distance meter | |
| JPS5621113A (en) | Light isolator coupler |