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US 5,671,240 AGranted
Solid state laser
AssigneeFuji Photo Film Co., Ltd.
InventorYoji Okazaki
Life of this patent
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Abstract
In a solid state laser, a solid state laser medium is pumped with a pumping source. A wavelength selector element is disposed in a laser resonator and a twisting element makes a mode of an oscillating beam a twisted mode in the laser resonator.
Claims6
A solid state laser in which a solid state laser medium is pumped with a pumping source to produce a laser beam, comprising:
- a laser resonator which causes said laser beam to oscillate therein at an oscillation mode;
- a twisting apparatus, disposed in said laser resonator, to produce a twisted mode of said oscillating laser beam such that generation of adjacent resonator modes of said oscillating laser beam are suppressed;
- and
- a wavelength selector element, disposed in said laser resonator, which selects a wavelength of said oscillating laser beam so as to suppress generation of another resonator mode of said oscillating laser beam;
- the combination of said twisting apparatus and wavelength selector element thereby produce a substantially singlemode laser beam.
2 more elements
Dependencies are inferred from the claim text.