US 12,224,547 B2
Laser device and method of using the same
Yu-Hua Hsieh, Hsinchu (TW); Ying-Yen Tseng, Hsinchu (TW); Wen-Yu Ku, Hsinchu (TW); and Kei-Wei Chen, Tainan (TW)
Assigned to Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed by Taiwan Semiconductor Manufacturing Company, Ltd., Hsinchu (TW)
Filed on Feb. 16, 2022, as Appl. No. 17/651,350.
Claims priority of provisional application 63/264,129, filed on Nov. 16, 2021.
Prior Publication US 2023/0155341 A1, May 18, 2023
Int. Cl. H01S 3/082 (2006.01); G01B 11/30 (2006.01); H01S 3/108 (2006.01)
CPC H01S 3/082 (2013.01) [G01B 11/303 (2013.01); H01S 3/108 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A laser device, comprising:
a first optical crystal, at a proximal end of the laser device, configured to emit first electromagnetic waves having a first wavelength; and
a second optical crystal, at a distal end of the laser device, configured to receive the first electromagnetic waves and to emit second electromagnetic waves having a second wavelength based on reception of the first electromagnetic waves,
wherein the second optical crystal comprises:
a first end having a thin film coating disposed thereon, and
a second end comprising two angled surfaces that each has a reflective film disposed thereon, wherein the two angled surfaces are formed with angles that are symmetric about a logical axis that is parallel to a transmission path in a direction from the proximal end of the laser device to the distal end of the laser device.