Coherent light generators – Particular beam control device – Tuning
Patent
1986-06-17
1987-11-17
Scott, Jr., Leon
Coherent light generators
Particular beam control device
Tuning
372 99, 372 28, 372 13, H01S 310
Patent
active
047078359
ABSTRACT:
Apparatus is provided for rapidly switching among discrete wavelengths within the output spectrum of a gas laser. A portion of the radiation in a primary optical cavity of a laser is transmitted by a partially reflective surface into a secondary cavity which includes a reflector element and one or more Bragg deflector cells. The Bragg cells are positioned between the primary cavity and reflector element, and frequency shift radiation passing between the primary cavity and reflector element. Each Bragg cell is selectably driven by an RF driver to enhance radiation of a predetermined wavelength within the range of the laser spectrum. Consequently, radiation injected back into the primary cavity from the secondary cavity is essentially of the predetermined wavelength.
REFERENCES:
patent: 3614462 (1971-10-01), Lean
patent: 3790898 (1974-02-01), Gudmundsen et al.
patent: 4586184 (1986-04-01), Hess
Honeywell Inc.
Jr. Leon Scott
Shudy Jr. John G.
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