Use of a diffractive optics transformer preceded by a corrector lens in a high-power semiconductor laser system

Robert H. Rediker; Xiaomei Wang; Michael A. Newkirk; Robert C. Sze

doi:10.1117/12.180725

28 July 1994 Use of a diffractive optics transformer preceded by a corrector lens in a high-power semiconductor laser system

Robert H. Rediker, Xiaomei Wang, Michael A. Newkirk, Robert C. Sze

Author Affiliations +

Proceedings Volume 2131, Biomedical Fiber Optic Instrumentation; (1994) https://doi.org/10.1117/12.180725
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

A design is presented of a high-power diode laser system that may be mass produced at minimum cost. The system consists of: an array of semiconductor lasers (stacked bars each with a multiplicity of stripe lasers); a mass-produced array of collimating lenses to `collimate' each of the laser output beams; an array of diffractive corrector lenses, each custom milled using an excimer laser, to correct for faults in the first two components; a diffractive optic transformer to geometrically transform the beam into a close packed symmetric virtual source that is focused to a spot or into a medical fiber. In this scheme, the outputs from the diode lasers are combined incoherently. While the design is for power outputs of the order of 100 W, the brightness theorem (the second law of thermodynamics) is theoretically consistent with incoherent combination of diode laser beams in a 600 micrometers diameter medical fiber with power over 1000 W.

Citation Download Citation

Robert H. Rediker, Xiaomei Wang, Michael A. Newkirk, and Robert C. Sze "Use of a diffractive optics transformer preceded by a corrector lens in a high-power semiconductor laser system", Proc. SPIE 2131, Biomedical Fiber Optic Instrumentation, (28 July 1994); https://doi.org/10.1117/12.180725

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