Laser resonators employing diffractive optical elements

Coherent light generators – Particular resonant cavity – Specified cavity component

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372 93, 372 97, 372 99, 372101, H01S 308

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051519178

ABSTRACT:
A laser 10 is disclosed in which there are incorporated one or more diffractive optical elements (DOE's) 20. The DOE's can be used in place of conventional optics to save costs and allow design of resonators not heretofore possible. The ability to vary the reflectivity of the surface of a DOE in any desired pattern allows unprecedented control of both the intracavity mode as well as the mode of the output beam.

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patent: 4933649 (1990-06-01), Swanson et al.
patent: 5013133 (1991-05-01), Buralli et al.
patent: 5027359 (1991-06-01), Leger et al.
patent: 5033060 (1991-07-01), Leger et al.
T. Shiono & K. Setsune, "Blazed Reflection Micro-Fresnel Lenses Fabricated by Electron-Beam Writing and Dry Development," Optics Letters, vol. 15, No. 1, Jan. 1, 1990, pp. 84-86.
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Booklet, "Applications of Diffractive Optics," Tuesday, Jun. 12, 1990, containing 2 articles: 1. D. A. Buralli & G. M. Morris, "Design of Two- and Three-Element Diffractive Telescopes," Institute of Optics, Univ. of Rochester, pp. LTuD1-1 through LTuD1-2; 2. A. D. Kathman & S. K. Pitalo, "Binary Optics in Lens Design," Teledyne Brown Engineering, pp. LTuD2-1 through LTuD2-2.
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J. Hecht, "`Binary` Optics Emerging From Labs," Laser & Optronics, May 1990, pp. 16, 21, 24, 26.

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