US 12,424,809 B2
Spectral channel splicer for spectral beam combining laser system
Hoang T. Nguyen, Livermore, CA (US); Michael C. Rushford, Livermore, CA (US); and Brad Hickman, Ripon, CA (US)
Assigned to Lawrence Livermore National Security, LLC, Livermore, CA (US)
Filed by Lawrence Livermore National Security, LLC, Livermore, CA (US)
Filed on Nov. 1, 2023, as Appl. No. 18/500,035.
Application 18/500,035 is a continuation in part of application No. 17/457,417, filed on Dec. 2, 2021, granted, now 11,835,387.
Prior Publication US 2024/0063597 A1, Feb. 22, 2024
Int. Cl. G01J 3/28 (2006.01); G02B 27/09 (2006.01); G02B 27/10 (2006.01); H01S 3/00 (2006.01); H01S 3/08 (2023.01); H01S 3/23 (2006.01)
CPC H01S 3/005 (2013.01) [G02B 27/0944 (2013.01); G02B 27/1006 (2013.01); H01S 3/08009 (2013.01); H01S 3/2391 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A spectral beam combining system comprising:
a plurality of input channels comprising a plurality of optical paths for propagating a plurality of respective input beams, different input channels configured for different wavelength input beams;
a spectral channel splicer comprising a plurality of reflectors, individual reflectors positioned to receive light from respective channels of the plurality of input channels; and
a spectral beam combiner comprising a diffractive optical element, said spectral beam combiner positioned to receive light from said plurality of input channels reflected off said plurality of respective reflectors, said spectral beam combiner configured to direct said plurality of input beams toward the same direction thereby forming an output beam comprising said plurality of input beams combined together,
wherein at least one of said input channels includes a diffractive optical element configured to provide angular dispersion compensation for said diffractive optical element in said spectral beam combiner that reduces the effects of angular dispersion of wavelength components within said at least one of said input channels at the output of the spectral beam combiner.