Coherent light generators – Particular resonant cavity – Specified cavity component
Patent
1994-05-06
1995-09-26
Scott, Jr., Leon
Coherent light generators
Particular resonant cavity
Specified cavity component
372102, 372108, H01S 308
Patent
active
054540046
ABSTRACT:
Method for making a custom phase-conjugating diffractive mirror for a laser resonator comprising the steps of: (a) (a) choosing a specified beam mode profile a.sub.i (x,y) that will suit need of said designer, (b) calculating the mode profile b(x',y') which is a value of the specified a.sub.i (x,y) that is propagated to the reflection surface of the diffractive mirror and (c) calculating mirror reflectance t(x',y') which reflects phase conjugate of b(x',y'). A method for fabricating such a mirror is shown. Another aspect of the invention is the addition of a phase adjusting element into a laser resonator, and compensating for the addition of a phase adjusting element in the design of other phase-adjusting elements such as the mirrors.
REFERENCES:
patent: 5033060 (1991-07-01), Leger et al.
patent: 5255283 (1993-10-01), Belanger et al.
J. R. Leger, et al., "Customized Laser Modes Using a Phase Grating and Mode Selecting Mirror," Tech. Digest of Conf. Lasers and Electroopt., Series vol. II, Anaheim, Calif., 411-412, May 8-13, 1994.
James R. Leger, et al., "Diffractive Optical Element for Mode Shaping of a Nd: YAG Laser," Opt. Letl. 19 108-110 (Jan. 15, 1994.).
James R. Leger, et al., "Modal Properties of an External Diode-Laser-Array Cavity with Diffractive Mode-Selecting Mirrors," IEEE LEOS Annual Meeting Conference Proceedings, San Jose, Calif., 681-682 (Nov. 1993).
J. R. Leger, "Modal properties of an external diode-laser-array cavity with phase conjugate optics," 8th Interdisciplinary Laser Science Conf., Albuquerque, N.Mex. (Nov. 1992); Bulletin of the American Physical Society 37, 1212 (Sep. 1992).
J. R. Leger, et al., "Applications of Diffractive Optics to Semiconductor Laser Arrays," Optical Design for Photonics Topical Meeting, Paul Springs, Calif., 2-5 (Mar. 22-24, 1993).
James Leger, et al., "Customizing Laser Cavities with Diffractive Optical Elements," (Abstract Only), Tech. Digest of Opt. Soc. of Am. Annual Meeting, Toronto, 140 (Oct. 3-8, 1993).
Jr. Leon Scott
Regents of the University of Minnesota
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