Accession Number : ADD014314

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

Descriptive Note : Patent Application, Filed 26 Jun 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

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

Report Date : 26 Jun 1989

Pagination or Media Count : 19

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. Keywords: Potassium nitrate; Injection locked diode lasers; Semiconductor laser; Gallium aluminum arsenides; Frequency doubling; Second harmonic generation; Patent application. (AW)

Descriptors :   *FREQUENCY MULTIPLIERS, *LASER BEAMS, *PATENT APPLICATIONS, ALUMINUM GALLIUM ARSENIDES, COHERENT RADIATION, CRYSTALS, DIFFERENCE FREQUENCY, DIFFRACTION, EFFICIENCY, HARMONIC GENERATORS, INJECTION LASERS, LIMITATIONS, NITRATES, NONLINEAR SYSTEMS, OPTICS, OUTPUT, POTASSIUM COMPOUNDS, POWER, SEMICONDUCTOR LASERS

Subject Categories : Lasers and Masers

Distribution Statement : APPROVED FOR PUBLIC RELEASE