Acoustical high speed holographic framing camera
Abstract
In recording holographic interferograms of transient events, several techniques were used to accomplish multiple time framing. These include using multiple lasers, beam splitting and multiple unequal optical delaying of a single laser beam; multiple cameras in conjunction with real time holographic interferograms, or a multiple cavity laser (MCL) holographic system with an independent operating cavity for each frame. Another technique, which would use a multiple cavity laser system in conjunction with a high speed acoustical deflector for making holograms, is described. This technique would have all the advantages of the MCL holographic system which allows more energy to be delivered to the object than does beam splitting, provides a reduction in instrumentation cost compared to multiple lasers, allows more flexible timing and a longer time interval between frames than do beam splitting or multiple cameras, and has better resolution than multiple cameras.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1976
- Bibcode:
- 1976STIN...7726468L
- Keywords:
-
- Framing Cameras;
- High Energy Electrons;
- Holographic Interferometry;
- Beam Splitters;
- Electro-Optics;
- High Speed Cameras;
- Laser Outputs;
- Instrumentation and Photography