Single mode laser suitable for use in frequency multiplied appli

Details Single mode laser suitable for use in frequency multiplied appli Single mode laser suitable for use in frequency multiplied appli

1999-04-12

1999-11-30

Healy, Brian

Coherent light generators

Particular beam control device

Nonlinear device

372 19, 372 23, 372 32, 372105, 372106, H01S 310

Patent

active

059955236

ABSTRACT:
A single mode laser implementation and associated method are disclosed. The laser may accommodate a frequency multiplying material to provide an intracavity doubled single frequency laser. The laser implementation includes an input mirror and an output mirror defining a resonant cavity and a light path within the resonant cavity and between the mirrors. A lasant material is positioned in the light path for lasing at a desired fundamental wavelength and possibly other, unwanted wavelengths. A first birefringent member is also positioned in the light path for refracting in different directions the different wavelengths of light which are present along the path. Also positioned in the light path is a second birefringent member which cooperates with the first birefringent member such that the first and second birefringent members together discriminate between the desired fundamental wavelength and the unwanted wavelengths so that one polarization of the desired fundamental wavelength is refracted in one direction which causes it to lase while certain portions of the unwanted wavelengths are refracted in other directions which cause all polarizations of the unwanted wavelengths to be extinguished.

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