OPTICAL RESONATOR AND LASER PROCESSING MACHINE

An optical resonator includes: a light source that emits light; a diffractive element that diffracts the light emitted at the light source and incident thereon as s-polarized light; and an output coupler that resonates the s-polarized light diffracted by the diffractive element. The output coupler i...

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Bibliographische Detailangaben
1. Verfasser:	ICHIHASHI, Kouki
Format:	Patent
Sprache:	eng
Schlagworte:	CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	An optical resonator includes: a light source that emits light; a diffractive element that diffracts the light emitted at the light source and incident thereon as s-polarized light; and an output coupler that resonates the s-polarized light diffracted by the diffractive element. The output coupler includes: a mirror arranged to reflect the light from the light source via the diffractive element; a polarization beam splitter arranged on a light path between the diffractive element and the mirror, and emitting, out of light incident thereon after emitted from the mirror, a p-polarized component to return to the light source and a s-polarized component as the output light; a quarter-wave plate arranged between the polarization beam splitter and the mirror, and having an optical axis providing a phase difference by a quarter wavelength in light incident thereon; and an adjuster that adjusts a direction of the optical axis of the quarter-wave plate.