US 12,216,291 B2
Systems and methods for alignment of wavelength beam combining resonators
Wang-Long Zhou, Andover, MA (US); Bien Chann, Merrimack, NH (US); Krzysztof Michal Nowak, Andover, MA (US); and Francisco Villarreal-Saucedo, Middleton, MA (US)
Assigned to Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jan. 19, 2024, as Appl. No. 18/417,101.
Application 18/417,101 is a continuation of application No. 17/890,859, filed on Aug. 18, 2022, granted, now 11,914,166.
Application 17/890,859 is a continuation of application No. 16/751,743, filed on Jan. 24, 2020, granted, now 11,454,821, issued on Sep. 27, 2022.
Claims priority of provisional application 62/797,438, filed on Jan. 28, 2019.
Prior Publication US 2024/0345409 A1, Oct. 17, 2024
Int. Cl. G02B 27/42 (2006.01); G02B 7/14 (2021.01)
CPC G02B 27/4255 (2013.01) [G02B 7/14 (2013.01)] 26 Claims
OG exemplary drawing
 
1. An alignment system for use with a laser resonator that spatially overlaps multiple input beams along a wavelength-beam-combining (WBC) dimension and outputs a resulting output beam from a beam output, the alignment system comprising:
a dispersive element configured to disperse beams in the WBC dimension;
a beam profiler for receiving beams and generating images of relative positions thereof;
disposed optically downstream of the beam output and optically upstream of the beam profiler, a first lens having optical power in a non-WBC dimension perpendicular to the WBC dimension;
disposed optically downstream of the dispersive element and optically upstream of the beam profiler, a second lens, having optical power in the WBC dimension, for focusing dispersed beams on the beam profiler;
disposed optically downstream of the beam output and optically upstream of the beam profiler, a third lens having optical power in the non-WBC dimension; and
a plurality of optical elements configured to (i) receive the output beam, (ii) direct a first portion of the output beam to the third lens, and (iii) direct a second portion of the output beam to the first lens.