Light intensity correlating apparatus

Details Light intensity correlating apparatus Light intensity correlating apparatus

1989-05-23

1991-02-19

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

324 77K, H01J 4014

Patent

active

049946633

ABSTRACT:
An apparatus for measuring an autocorrelation wavaeform of intensity of input light comprises a beam splitting means for dividing the input light into two light beams, a photoelectric converter for converting one of the divided beams into an electrical signal, an optical modulating means for modulating the other light beam in accordance with the electrical signal, a delay means for varying a relative delay time between arrival times to the optical modulating means of the light beam and the electrical signal, and a photodetector having a response speed faster than that of the delay time variation for detecting output light from the optical modulating means.

REFERENCES:
patent: 4328576 (1982-05-01), Oakley
patent: 4480192 (1984-10-01), Albrecht et al.
patent: 4644267 (1987-02-01), Tsui et al.
patent: 4777433 (1988-10-01), Steele et al.

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