Er:YALO upconversion laser

Details Er:YALO upconversion laser Er:YALO upconversion laser

1995-11-30

1997-10-28

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Nonlinear device

372 41, 372 6, 372 12, 372 39, 372 69, 372 34, 372 71, 372 56, 372 13, 372 14, 372 20, H05S 310

Patent

active

056823975

ABSTRACT:
A laser comprises an upconversion laser gain element made of a crystalline xide host doped with activator ions for emitting output radiation at an output wavelength. The gain element is pumped by pumping radiation at a pumping wavelength that is longer than the output wavelength. A laser resonator comprising a reflective element and an output coupler is arranged with the gain element to resonate the output radiation. The reflective element is spaced from the output coupler by a distance approaching the radius of curvature of the reflective element or the output coupler. The pumping radiation has a waist that is substantially coincident with the waist of the output radiation within the active region of the gain element.

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