Monolithic self Q-switched laser

Details Monolithic self Q-switched laser Monolithic self Q-switched laser

1994-01-19

1995-05-09

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Q-switch

372 6, 372 11, 372 39, 372 68, 372 71, H01S 311

Patent

active

054147247

ABSTRACT:
A monolithic self-Q-switched laser generates laser pulses with short duration, high peak power, a single longitudinal mode, and extremely small pulse-to-pulse intensity fluctuations. The laser comprises of a length of solid-state laser material with a plurality of dopants, so that the material can generate coherent radiation for laser action and, in the same material, provide saturable absorption at the wavelength of the laser emission necessary for Q-switching. The distributed saturable absorber in the material provides a spectral stabilization mechanism that ensures single longitudinal-mode operation. The laser cavity is formed by the two end surfaces of the solid-state laser material with appropriate reflectivity coatings. When the laser material is pumped above the threshold condition, the laser device produces short pulses having high peak power in a single longitudinal mode and single transverse mode.

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