Method and apparatus for converting steady light into output lig

Details Method and apparatus for converting steady light into output lig Method and apparatus for converting steady light into output lig

1979-11-26

1981-04-28

Rosenberger, Richard A.

350286, G02B 2714

Patent

active

042641357

ABSTRACT:
A steady light beam such as continuous wave, constant amplitude coherent light as provided by a laser, is moved through a given acute angle at a given frequency. The light beam is passed into a solid body of light transmissive material while moving through the given acute angle such that the initially received light in the body when the beam starts its movement through the acute angle follows a first path of a first given length before it emerges from the body. Subsequently received light in the body when the beam has completed its movement through the acute angle, in turn, follows a second path of a second given length different from the first given length before it emerges from the body. The referred-to-frequency is adjusted to define a time increment for the beam to move through the referred to given acute angle. This time increment is made substantially equal to the time it takes light to travel a path length in the body equal to the difference in the referred to first and second given lengths. With such an arrangement, the light beams entering the body at the extremes of the acute angle will exit or emerge from the body coincidentally in time thereby resulting in a high amplitude pulse. These high amplitude pulses are generated at the frequency of movement of the beam through the referred to acute angle.

REFERENCES:
patent: 3459466 (1969-08-01), Giordmaine
patent: 3684346 (1972-08-01), Lang

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