US 12,424,815 B2
Method and system for multi-wavelength laser system
John R. Marciante, Webster, NY (US)
Assigned to RAM Photonics Industrial, LLC, Webster, NY (US)
Filed by RAM Photonics, LLC, San Diego, CA (US)
Filed on Jan. 24, 2022, as Appl. No. 17/582,312.
Claims priority of provisional application 63/140,704, filed on Jan. 22, 2021.
Prior Publication US 2022/0239054 A1, Jul. 28, 2022
Int. Cl. H01S 3/23 (2006.01); H01S 3/067 (2006.01); H01S 3/30 (2006.01)
CPC H01S 3/2391 (2013.01) [H01S 3/067 (2013.01); H01S 3/302 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A multi-wavelength laser system comprising:
a first fiber laser having a first cavity mirror enclosed in a first thermo-mechanical housing and a first output coupler, wherein:
a first longitudinal mode spacing associated with the first fiber laser is on the order of 50 MHz and a first SBS spectral response associated with the first fiber laser is on the order of 20 MHz; and
the first cavity mirror and the first output coupler are characterized by a first reflection bandwidth on the order of 10 GHz, thereby supporting approximately 200 longitudinal modes;
a first optical coupler connected to the first output coupler;
a second fiber laser having a second cavity mirror enclosed in a second thermo-mechanical housing and a second output coupler, wherein:
a second longitudinal mode spacing associated with the second fiber laser is on the order of 50 MHz and a second SBS spectral response associated with the second fiber laser is on the order of 20 MHz; and
the second cavity mirror and the second output coupler are characterized by a second reflection bandwidth on the order of 10 GHz, thereby supporting 200 longitudinal modes;
a second optical coupler connected to the second output coupler; and
a spectral beam combiner configured to:
receive first output light from the first optical coupler;
receive second output light from the second optical coupler;
combine the first output light and the second output light; and
form a multi-wavelength output beam.