US 12,438,328 B2
Laser systems and methods
Honggang Yu, San Jose, CA (US)
Assigned to Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed by Boston Scientific Scimed, Inc., Maple Grove, MN (US)
Filed on Jan. 16, 2024, as Appl. No. 18/413,144.
Application 18/413,144 is a continuation of application No. 17/660,467, filed on Apr. 25, 2022, granted, now 11,916,347.
Application 17/660,467 is a continuation of application No. 17/069,094, filed on Oct. 13, 2020, granted, now 11,342,722, issued on May 24, 2022.
Application 17/069,094 is a continuation of application No. 16/008,438, filed on Jun. 14, 2018, granted, now 10,840,666, issued on Nov. 17, 2020.
Claims priority of provisional application 62/522,428, filed on Jun. 20, 2017.
Prior Publication US 2024/0154378 A1, May 9, 2024
Int. Cl. H01S 3/00 (2006.01); A61B 18/26 (2006.01); G02B 6/42 (2006.01); G02B 27/09 (2006.01); H01S 3/082 (2006.01); H01S 3/23 (2006.01); H01S 5/40 (2006.01)
CPC H01S 3/0071 (2013.01) [A61B 18/26 (2013.01); G02B 6/4206 (2013.01); G02B 6/4214 (2013.01); G02B 27/0905 (2013.01); H01S 3/005 (2013.01); H01S 3/082 (2013.01); H01S 3/2383 (2013.01); H01S 5/4012 (2013.01); H01S 3/0085 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A laser system comprising:
a plurality of laser resonators, each resonator being operable to discharge an input laser beam;
a relay assembly including at least one curved reflective surface that redirects each input laser beam, and reduces a beam size of the redirected beam;
a galvo that receives each redirected beam, and outputs a combined laser beam at power level greater than a power level of each laser input beam; and
a coupling assembly that reduces spherical aberrations in the combined laser beam, and directs the combined laser beam into an optical fiber,
wherein the combined laser beam has a maximum beam parameter product lower than a minimum beam parameter product of the optical fiber,
wherein each input laser beam is discharged along a beam path comprising: (i) a first distance extending from one resonator of the plurality of laser resonators to the at least one curved reflective surface of the relay assembly; (ii) a second distance extending from the at least one curved reflective surface of the relay assembly to the reflective surface of the galvo; and (iii) a third distance extending from the reflective surface of the galvo to an optical fiber,
wherein the at least one curved reflective surface comprises a first curvature radius and a second curvature, and
wherein the first curvature radius and the second curvature radius are sized relative to the first, second, and third distances.