Striped-double cavity fabry-perot interferometers using both glass and air cavities
We have used piezo-driven Fabry-Perot interferometers in the past far many continuous velocity-time measurements of fast moving surfaces. In order to avoid the annoying drift of some of these devices, we have developed and used inexpensive, solid glass, striped etalons with lengths up to 64 mm. Usable apertures are 35 mm by 80 mm with a finess of 25. A roundabout technique was devised for double cavity operation. We built a passive thermal housing for temperature stability, with tilt and height adjustments. We have also developed and used our first fixed etalon air-spaced cavity with a rotatable glass double- cavity insert. The rotation allows the referee cavity fractional order to be adjusted separately from that of the main cavity. It needs very little thermal protection, and eliminates the need for a roundabout scheme for double cavity operation, but is more costly than the solid glass version I
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE Office of Defense Programs (DP)
- DOE Contract Number:
- W-7405-Eng-48
- OSTI ID:
- 2495
- Report Number(s):
- UCRL-JC-129546; R&D Project: DP0102012; ON: DE00002495
- Resource Relation:
- Conference: International Congress on High Speed Photography and Photonic, Moscow, Russia, September 20-25, 1998
- Country of Publication:
- United States
- Language:
- English
Similar Records
Tilted birefringent Fabry--Perot etalon for tuning dye lasers
System and method for generating a displacement with ultra-high accuracy using a fabry-perot interferometer