High brightness, monolithic, multispectral semiconductor laser

Patent metadata

Field	Value
Publication number	US-11526019-B2
Application number	US-202016989023-A
Country	US
Kind code	B2
Filing date	Aug 10, 2020
Priority date	Apr 6, 2013
Publication date	Dec 13, 2022
Grant date	Dec 13, 2022

Abstract

A system and method for combining multiple emitters into a multi-wavelength output beam having a certain band and combining a plurality of these bands into a single output using non-free space combining modules.

First claim

The invention claimed is:

1. A laser system comprising:
a plurality of beam emitters each configured to emit an optical beam having a different wavelength;
a non-free-space optical module positioned to receive the optical beams;
a diffraction grating for combining the optical beams into a multi-wavelength beam; and
positioned to receive the multi-wavelength beam, a reflector for (i) transmitting a first portion of the multi-wavelength beam as an output beam, and (ii) reflecting a second portion of the multi-wavelength beam, thereby causing transmission of the second portion of the multi-wavelength beam through the non-free-space optical module back to the plurality of beam emitters, whereby each beam emitter is stabilized to its emission wavelength.

2. The system of claim 1 , further comprising an optic for converging the plurality of optical beams toward the diffraction grating.

3. The system of claim 2 , wherein the optic is spaced away from a surface of the non-free-space optical module.

4. The system of claim 2 , wherein the optic is disposed on a surface of the non-free-space optical module.

5. The system of claim 1 , wherein the diffraction grating is disposed on a surface of the non-free-space optical module or within the non-free-space optical module.

6. The system of claim 5 , wherein the reflector is disposed on a surface of the non-free-space optical module or within the non-free-space optical module.

7. The system of claim 1 , wherein the reflector is disposed on a surface of the non-free-space optical module or within the non-free-space optical module.

8. The system of claim 1 , wherein each of the beam emitters is a diode emitter disposed within a diode bar.

9. The system of claim 1 , wherein at least a portion of the non-free-space optical module comprises a material selected from the group consisting of glass, silica, sapphire, CaF 2 , MgF 2 , and ZnSe.

10. The system of claim 1 , further comprising a plurality of optical fibers, each optical fiber being associated with one of the beam emitters.

11. The system of claim 1 , further comprising a collimation optic for collimating the optical beams.

12. The system of claim 11 , wherein the collimation optic is disposed on a surface of the non-free-space optical module.

13. The system of claim 1 , further comprising one or more prisms positioned to receive one or more of the optical beams.

14. The system of claim 1 , further comprising a dichroic combiner positioned to receive the output beam.

Assignees

• Huang Robin
• Chann Bien
• Tayebati Parviz
• Cruz Mike
• Teradiode Inc

Inventors

• Huang Robin
• Chann Bien
• Tayebati Parviz
• Cruz Mike

Classifications

• H01S5/005

  Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping (H01S5/026, H01S5/18388 take precedence) · CPC title

• H01S5/4012 Primary

  Beam combining, e.g. by the use of fibres, gratings, polarisers, prisms · CPC title

• H01S5/4025

  Array arrangements, e.g. constituted by discrete laser diodes or laser bar (H01S5/42 takes precedence) · CPC title

• H01S5/4087

  emitting more than one wavelength · CPC title

• G02B27/1086

  operating by diffraction only · CPC title