US 12,332,116 B2
Laser system with self-referencing shaper
Marcos Dantus, Okemos, MI (US)
Assigned to Board of Trustees of Michigan State University, East Lansing, MI (US)
Filed by Board of Trustees of Michigan State University, East Lansing, MI (US)
Filed on Dec. 22, 2022, as Appl. No. 18/086,749.
Claims priority of provisional application 63/294,485, filed on Dec. 29, 2021.
Prior Publication US 2023/0204431 A1, Jun. 29, 2023
Int. Cl. G01J 11/00 (2006.01)
CPC G01J 11/00 (2013.01) 21 Claims
OG exemplary drawing
 
1. A method of using a laser system comprising:
(a) emitting an input light beam;
(b) splitting the light beam into an input reference path and a shaping path;
(c) shaping the light beam along the shaping path;
(d) delaying the light beam along the input reference path;
(e) conducting interferometry on the shaped and delayed light beams;
(f) comparing the shaped and delayed light beams to extract phase and amplitude variation information of the shaped and delayed light beams;
(g) automatically compensating for variations by adjusting the shaping path to achieve zero-dispersion introduced by the shaping path; and
(h) transmitting an output light beam from the shaping path, configured for workpiece interaction.