Apparatus for the efficient wavelength conversion of laser radia

Details Apparatus for the efficient wavelength conversion of laser radia Apparatus for the efficient wavelength conversion of laser radia

1989-06-26

1990-03-06

Sikes, William L.

Coherent light generators

Particular beam control device

Optical output stabilization

372 21, 372 22, 372 75, H01S 313

Patent

active

049072382

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.

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