Holographic Volume Phase, 17-Inch Aperture, On-Axis, Spherical Beamsplitter Mirror: Development of.
Final rept. 1 Dec 75-1 Mar 77,
FARRAND OPTICAL CO INC VALHALLA N Y
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This project was to develop a holographic, spherical beamsplitter mirror, utilizing a high power continuous wave laser. The holographic beamsplitter mirror would be used in a Pancake Window system, replacing the classical beamsplitter mirror which is expensive to manufacture and is the heaviest element. Techniques that were investigated involved the handling of high power lasers a two-room, two-table geometry configuration and other lesser problems, such as vibration, thermal, accoustic, and ghosts. A 17-inch aperture, holographic volume-phase, on-axis, spherical beamsplitter mirror was developed and tested in a holographic Pancake Window system. Its overall performance was not yet as good as a classical Pancake Window system, but results at certain angles were better than theoretically could be expected. It was recommended that development be continued in order to resolve problems encountered during this project and to develop a larger size holographic spherical beamsplitter mirror. Author
- Lasers and Masers