US 12,413,046 B2
Photonic crystal surface emitting laser device
Lih-Ren Chen, Hsinchu (TW); Kuo-Bin Hong, Hsinchu (TW); Tien-Chang Lu, Hsinchu (TW); Chien-Hung Lin, Hsinchu (TW); Hsiu-Ling Chen, Hsinchu (TW); and Kuan-Chih Huang, Hsinchu (TW)
Assigned to Phosertek Corporation, Hsinchu (TW)
Filed by Phosertek Corporation, Hsinchu (TW)
Filed on Mar. 31, 2022, as Appl. No. 17/709,442.
Claims priority of provisional application 63/169,255, filed on Apr. 1, 2021.
Claims priority of application No. 110116735 (TW), filed on May 10, 2021.
Prior Publication US 2022/0320827 A1, Oct. 6, 2022
Int. Cl. H01S 5/11 (2021.01); H01S 5/042 (2006.01); H01S 5/183 (2006.01)
CPC H01S 5/11 (2021.01) [H01S 5/04256 (2019.08); H01S 5/183 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A photonic crystal surface emitting laser device, comprising:
at least one photonic crystal surface emitting laser unit, the photonic crystal surface emitting laser unit comprising:
a light-emitting layer, configured to emit a light beam;
a photonic crystal layer, disposed on one side of the light-emitting layer;
a doped semiconductor layer, disposed on another side of the light-emitting layer; and
a diffractive grating, disposed on the photonic crystal layer or the doped semiconductor layer; and
a first electrode, electrically connected to the doped semiconductor layer, wherein the photonic crystal surface emitting laser unit further comprises a second electrode, disposed on the photonic crystal layer and electrically connected to the photonic crystal layer, and wherein a portion of the second electrode is the diffractive grating, and after the light beam is diffracted by the photonic crystal layer and the diffractive grating, the light beam is emitted from the photonic crystal surface emitting laser unit.