Optics: measuring and testing – Photometers
Patent
1980-07-07
1982-07-13
Rosenberger, R. A.
Optics: measuring and testing
Photometers
350354, 356 33, 356 355, 356360, 356361, G01J 100
Patent
active
043391990
ABSTRACT:
A pulsed laser beam intensity monitor measures the peak power within a selectable cross section of a test laser beam and measures integrated energy of the beam during the pulse period of a test laser. A continuous wave laser and a pulsed ruby laser are coaxially arranged for simultaneously transmitting optical output energy through a crystal flat during the time a test laser pulse is transmitted through the flat. Due to stress birefringence in the crystal, the ruby laser pulse transmitted through the flat is recorded and analyzed to provide peak power information about the test laser output pulse, and the continuous wave laser output reflected from the crystal flat provides a measurement of energy during the test laser pulse.
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Herrman et al., "Trace Analysis in Gases by Laser-Induced Schlieren Techne", IBM Technical Disclosure Bulletin, vol. 21, No. 10 (Mar. 1979), pp. 4208-4209.
Hordvik et al., "Photoacoustic Measurements of Surface and Bulk Absorption in HF/DF Laser Window Materials", Applied Optics, vol. 16, No. 11, (Nov. 1977) pp. 2919-2924.
Narasimhamurty, Photoelastic and Electro-Optic Properties of Crystals, Plenum Press, New York .COPYRGT.1981, p. 287.
Cason Charles M.
Jones Robert W.
Bush Freddie M.
Edelberg Nathan
Gibson Robert P.
Rosenberger R. A.
The United States of America as represented by the Secretary of
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