EXTERNAL-CAVITY ONE-DIMENSIONAL MULTI-WAVELENGTH BEAM COMBINING OF TWO-DIMENSIONAL LASER ELEMENTS
First Claim
1. A multi-wavelength beam combiner comprising:
- a laser stack comprising a plurality of laser arrays arranged along a stacking dimension of the laser stack, each laser array configured to generate optical radiation having a unique wavelength, and each of the plurality of laser arrays comprising a plurality of optical gain elements arranged along an array dimension of the laser stack;
a cylindrical telescope configured to image each of the plurality of optical gain elements along a slow axis of the optical gain elements;
a transform lens arranged to intercept the optical radiation from each of the plurality of laser arrays and combine the optical radiation along the stacking dimension of the laser stack to form a multi-wavelength optical beam; and
a diffraction element positioned at a region of overlap of the optical radiation to receive and transmit the multi-wavelength optical beam;
wherein the cylindrical telescope is configured to image each of the plurality of optical gain elements onto the diffraction element.
1 Assignment
0 Petitions
Accused Products
Abstract
An external-cavity one-dimensional multi-wavelength beam combiner that performs wavelength beam combining along a stacking dimension of a laser stack formed of a plurality of laser arrays, each laser array configured to generate optical radiation having a unique wavelength, and each of the plurality of laser arrays including a plurality of laser emitters arranged along an array dimension of the laser stack. The multi-wavelength beam combiner includes a cylindrical telescope configured to image each of the laser emitters along a slow axis of the laser emitters, a transform lens arranged to intercept the optical radiation from each of the plurality of laser arrays and combine the optical radiation along a stacking dimension of the laser stack to form a multi-wavelength optical beam, and a diffraction element positioned at a region of overlap of the optical radiation to receive and transmit the multi-wavelength optical beam.
-
Citations
26 Claims
-
1. A multi-wavelength beam combiner comprising:
-
a laser stack comprising a plurality of laser arrays arranged along a stacking dimension of the laser stack, each laser array configured to generate optical radiation having a unique wavelength, and each of the plurality of laser arrays comprising a plurality of optical gain elements arranged along an array dimension of the laser stack; a cylindrical telescope configured to image each of the plurality of optical gain elements along a slow axis of the optical gain elements; a transform lens arranged to intercept the optical radiation from each of the plurality of laser arrays and combine the optical radiation along the stacking dimension of the laser stack to form a multi-wavelength optical beam; and a diffraction element positioned at a region of overlap of the optical radiation to receive and transmit the multi-wavelength optical beam; wherein the cylindrical telescope is configured to image each of the plurality of optical gain elements onto the diffraction element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A multi-wavelength beam combiner comprising:
-
a laser stack comprising a first laser array configured to generate a first optical beam having a first wavelength, and a second laser array configured to generate a second optical beam having a second wavelength, each of the first and second laser arrays comprising a plurality of optical gain elements arranged along an array dimension of the laser stack and configured to produce optical radiation to generate the first and second optical beams; a cylindrical telescope arranged to intercept the optical radiation and to image each of the plurality of optical gain elements along the array dimension; a transform lens arranged to intercept the first and second optical beams and to spatially overlap in a stacking dimension of the laser stack the first and second optical beams to form a multi-wavelength optical beam; a diffraction element positioned at a region of overlap of the first and second optical beams; and a partially reflecting output coupler arranged to receive the multi-wavelength optical beam from the diffraction element, to reflect a portion of the multi-wavelength optical beam back to the region of overlap, and to transmit the multi-wavelength optical beam comprising optical radiation having the first and second wavelengths; wherein the diffraction element, the partially reflecting output coupler and the laser stack together form a free space cavity that produces the first and second wavelengths; and wherein the stacking dimension is substantially perpendicular to the array dimension. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
-
23. A method of wavelength beam combining comprising:
-
generating with a plurality of laser arrays a plurality of optical beams each having a unique wavelength; imaging the plurality of optical beams along a first dimension with a cylindrical telescope; and spatially overlapping the plurality of optical beams in a second dimension at a region of overlap using a cylindrical transform lens to produce a multi-wavelength optical beam comprising the plurality of unique wavelengths. - View Dependent Claims (24, 25, 26)
-
Specification