US 11,862,927 B2
High reliability high power high brightness blue laser diode systems and methods of making the same
Jean-Philippe Feve, Monument, CO (US); Matthew Silva Sa, Parker, CO (US); Monica Greenlief, Englewood, CO (US); Donald Millick, Greenwood Village, CO (US); Denis Brisson, Castle Rock, CO (US); Nathaniel Dick, Westminster, CO (US); and Mark S Zediker, Castle Rock, CO (US)
Assigned to Nuburu, Inc., Centennial, CO (US)
Filed by Nuburu, Inc., Centennial, CO (US)
Filed on Feb. 3, 2020, as Appl. No. 16/780,138.
Claims priority of provisional application 62/800,474, filed on Feb. 2, 2019.
Prior Publication US 2023/0208097 A1, Jun. 29, 2023
Int. Cl. H01S 5/00 (2006.01); H01S 3/02 (2006.01); H01S 5/02224 (2021.01); H01S 5/0225 (2021.01); H01S 5/40 (2006.01); H01S 3/23 (2006.01); H01S 3/00 (2006.01)
CPC H01S 5/0021 (2013.01) [H01S 3/027 (2013.01); H01S 5/02224 (2013.01); H01S 5/4087 (2013.01); H01S 3/0071 (2013.01); H01S 3/2383 (2013.01); H01S 5/0225 (2021.01); H01S 5/4031 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A high power, high brightness solid-state laser assembly, for providing a high-quality blue laser beam over long periods of time without substantial degradation of the laser beam properties, the assembly comprising:
a. a housing, the housing defining an internal cavity; wherein the internal cavity is isolated from an environment that is external to the housing;
b. a solid-state device for propagating a laser beam from a propagation surface of the solid-state device along a laser beam path, wherein the laser beam has a wavelength in the range of 410 nm to 500 nm; and wherein the laser beam has a power density of at least about 0.5 MW/cm2 at the propagation surface of the solid-state device;
c. an optics assembly, the optics assembly in optical communication with the solid-state device and on the laser beam path;
d. wherein the solid-state device and the optics assembly are located within the housing and in the internal cavity, whereby the solid-state device and the optics assembly are isolated from the external environment;
e. the housing comprising a housing propagation surface, whereby the laser beam is transmitted from the housing into the external environment along the laser beam path; the housing propagation surface in optical communication with the optics assembly and on the laser beam path;
f. the laser beam upon exiting the housing propagation surface characterized by beam properties, the beam properties comprising: (i) a power of at least 100 W; and, (ii) a BPP of less than 100 mm-mrad;
g. the internal cavity being free from sources of silicon based contaminates, whereby during operation of the solid-state device SiO2 production within the internal cavity is avoided; whereby the internal cavity avoids SiO2 buildup; and,
h. whereby the degradation rate of the beam properties is 2.3% per khrs or less.