Coherent light generators – Particular resonant cavity – Specified cavity component
Patent
1989-08-24
1990-12-11
Sikes, William L.
Coherent light generators
Particular resonant cavity
Specified cavity component
H01S 308
Patent
active
049775758
ABSTRACT:
A wire, comprising a shape memory alloy, is shaped to define a perimeter of an aperture having an adjustable size. The wire is responsive to current flow through the wire to vary the length of the wire, and thereby the length of the perimeter of the aperture. A controllable power supply is coupled to the wire, for supplying a controllable current through the wire to adjust its length, and thereby to adjust the size of the aperture. The aperture is suited for controlling transverse modes in a laser by controlling diffraction losses in the laser resonant cavity. Also, the shape memory alloy aperture is suitable for mounting within a sealed cavity laser.
REFERENCES:
patent: 3936770 (1976-02-01), Reintjes et al.
patent: 4268799 (1981-05-01), McCrickerd
patent: 4496518 (1985-01-01), Marie
patent: 4675500 (1987-06-01), Kunz et al.
patent: 4751706 (1988-06-01), Rohde et al.
Mondotronics Product Brochure.
Product Brochure: Biometal by Mondo-Tronics, Inc., 1014 Morse Ave., Suite 11, Sunnyvale, Calif., 94089.
Sikes William L.
Spectra-Physics Inc.
Wise Robert E.
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