Multi-wavelength semiconductor laser device

• US 8,891,581 B2
• Filed: 01/29/2014
• Issued: 11/18/2014
• Est. Priority Date: 06/09/2009
• Status: Expired due to Fees

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Corporation
• Inventors: Okura, Yuji
• Primary Examiner(s): Matthews, Colleen A
• Assistant Examiner(s): FORDE, DELMA ROSA
• Application Number:
  US14/166,921
• Publication Number:
  US 20140146844A1
• Time in Patent Office: 293 Days
• Field of Search: 372/36, 372/92, 372/107, 372/109, 257/666, 257/678, 257/380, 257/384, 257/688, 257/723, 257/732, 257/733, 257/690, 257/88, 257/89, 257/91, 257/95, 257/98, 257/99, 257/618, 362/231, 362/249.02, 362/249.06, 362/249.14, 362/227
• US Class Current: 372/107
• CPC Class Codes: H01L 2224/48091 Arched
• CPC Class Codes: H01L 2924/00014 the subject-matter covered by the group, the symbol of which is combined with the symbol of this group, being disclosed without further technical details
• CPC Class Codes: H01S 5/02326 Arrangements for relative positioning of laser diodes and optical components, e.g. grooves in the mount to fix optical fibres or lenses
• CPC Class Codes: H01S 5/40 Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30 H01S5/50 takes precedence
• CPC Class Codes: H01S 5/4037 with active layers in more than one orientation
• CPC Class Codes: H01S 5/4087 emitting more than one wavelength

Abstract

A multi-wavelength semiconductor laser device includes a block having a V-shaped groove with two side faces extending in a predetermined direction; and laser diodes with different light emission wavelengths mounted on the side faces of the groove in the block so that their laser beams are emitted in the predetermined direction.

Claims

1. A multi-wavelength semiconductor laser device comprising:

a block; and

first and second laser diodes producing light having respective different wavelengths, wherein

the block has a groove that has a V-shape when viewed in a plan view of the block, wherein the plan view is taken along a predetermined direction,

the groove is defined by first and second side faces extending along the predetermined direction,

the first and second side faces are contiguous in the groove, and

the first and second laser diodes are respectively mounted on the first and second side faces of the groove so that the light produced by the first and second lasers is emitted parallel to the predetermined direction.

3. The multiple wavelength light semiconductor device according to claim 1, wherein the first semiconductor laser diode produces light at the first wavelength and at a third wavelength, different from both of the first and second wavelengths.

2. A multiple wavelength light semiconductor laser device comprising:

a stem having a top face;

a cylindrical block having

a bottom face mounted on the top face of the stem, and

first and second side faces that are transverse to the top face of the stem and the bottom face of the cylindrical block, that adjoin each other, and, when the cylindrical block is viewed along a direction transverse to the top surface of the stem, the first and second side faces form a V-shape; and

first and second semiconductor laser diodes respectively producing light at different first and second wavelengths, and respectively mounted on the first and second side faces for emitting light parallel to the direction transverse to the top face of the stem and the bottom face of the cylindrical block.

4. A multiple wavelength light semiconductor laser device comprising:

a stem having a top face;

a block having

a bottom face mounted on the top face of the stem, and

first and second side faces that are transverse to the top face of the stem and the bottom face of the block, that adjoin each other, and, when the block is viewed along a direction transverse to the top surface of the stem, the first and second side faces form a V-shape; and

first and second semiconductor laser diodes respectively producing light at different first and second wavelengths, and respectively mounted on the first and second side faces for emitting light parallel to the direction transverse to the top face of the stem and the bottom face of the cylindrical block.