Apparatus for the Efficient Wavelength Conversion of Laser Radiation.
Patent Application, Filed 26 Jun 89,
DEPARTMENT OF THE NAVY WASHINGTON DC
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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
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