Semiconductor laser device assembly
AssigneeSony Corporation
InventorsHideki Watanabe, Shunsuke Kono, Masaru Kuramoto
Life of this patent
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Abstract
A semiconductor laser device assembly includes (A) a semiconductor laser element and (B) a diffraction grating that configures an external resonator, returns diffraction light other than zero-th order diffraction light to the semiconductor laser element, and outputs the zero-th order diffraction light to the outside. An extension direction of a diffraction surface of the diffraction grating and a main vibration direction of a field of a laser beam incident on the diffraction grating are substantially parallel to each other.
Claims13
A semiconductor laser device assembly comprising:
- (A) a semiconductor laser element;
- and
- (B) a diffraction grating that configures an external resonator, returns diffraction light other than zero-th order diffraction light to the semiconductor laser element, and outputs the zero-th order diffraction light to the outside,
- wherein an extension direction of a diffraction surface of the diffraction grating and a main vibration direction of a field of a laser beam incident on the diffraction grating are substantially parallel to each other.
A semiconductor laser device assembly comprising:
- (A) a semiconductor laser element;
- and
- (B) an optical element that configures an external resonator, returns a part of an incident laser beam to the semiconductor laser element, and outputs the remainder of the incident laser beam to the outside,
- wherein extraction efficiency of a laser beam component having a field included in a plane parallel to a principal surface of the semiconductor laser element to the outside is higher than extraction efficiency of a laser beam component having a field orthogonal to the principal surface of the semiconductor laser element to the outside.
Dependencies are inferred from the claim text.