Resonant galvanometer driven two dimensional gain scanner
US6320895A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Mar 8, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/0014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A system for making small signal gain measurements of a chemical laser, such as an HF or DF laser. The system is adapted to measure the two dimensional (x,y) gain distribution in real time (i.e. 30 to 40 frames per second). The system includes a resonating galvanometer driven scanning mirror which is able to tilt in both the horizontal x and vertical y direction. The scanning mirror is used for scanning the gain profile of an HF/DF probe laser. The tiltable scanning mirror with appropriate optics, allows the laser beam from the probe laser to be scanned while remaining parallel to the nozzle exit plane of the laser and thus allows the two dimensional scanning of the gain distribution in real time (i.e. at rates up to 40 frames per second). As such, the system is adapted to be controlled by a personal computer with the data stored on a hard disk drive therewithin. Another important aspect of the present invention is that the system enables the gain distribution to be measured rapidly at various wavelengths of the chemical laser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.