Accession Number : ADD014506

Title :   Apparatus for the Efficient Wavelength Conversion of Laser Radiation.

Descriptive Note : Patent, Filed 26 Jun 89, patented 6 Mar 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Chun, Myung K ; Goldberg, Lew ; Weller, Joseph F

Report Date : 06 Mar 1990

Pagination or Media Count : 16

Abstract : An apparatus for generating coherent radiation at a desired frequency is disclosed. In a preferred embodiment the apparatus comprises: an injection-locked semiconductor diode structure having a large active area for emitting a diffraction-limited beam at a preselected frequency; optics for focusing the diffraction-limited beam into a focused beam; a nonlinear crystal responsive to the focused beam for producing a beam of laser power which includes an output beam at a desired harmonic of the preselected frequency; and a device for passing the output beam in a given direction. In a modification of the preferred embodiment, the output of the injection-locked semiconductor diode structure is mixed with an emission from a laser source in the nonlinear crystal to produce a desired sum or difference frequency. Patents. (jhd)

Descriptors :   *DIFFERENCE FREQUENCY, *PATENTS, COHERENT RADIATION, FREQUENCY CONVERSION, CRYSTALS, CONVERTERS, DIFFRACTION, QUANTUM EFFICIENCY, LASER BEAMS, SEMICONDUCTOR LASERS, LIMITATIONS, NONLINEAR SYSTEMS, OPTICS, OUTPUT, INJECTION DIODES, POWER

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE