Coherent light generators – Particular beam control device – Optical output stabilization
Patent
1981-05-29
1984-08-28
Sikes, William L.
Coherent light generators
Particular beam control device
Optical output stabilization
372 18, 372 19, 372 20, 372 28, 372 38, H01S 313
Patent
active
044687737
ABSTRACT:
A laser control apparatus for use with a laser having output radiation including an intermodal beat frequency and electric signal responsive means for controlling the light frequency from the laser; radiation responsive electric signal means adapted for association with said radiation for providing an electric signal having a frequency as a function of said beat frequency; and means for sensing changes in phase of the aforementioned signal and providing a second electric signal varying as a function thereof and being adapted for connection to the electric signal responsive means. The apparatus also includes a phase comparator and circuitry providing a phase lock of the first-named and reference signals.
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Chickering Robert B.
Grunewald Glen R.
Jr. Leon Scott
Sikes William L.
Warren Manfred M.
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