We have analyzed threshold gains and lasing modes in GaN-based photonic crystal (PC) surface emitting lasers (PCSELs) by using the multiple scattering method (MSM) for triangular-lattice PC patterns. Moreover, GaN-based PCSELs with different boundary shapes have been fabricated and measured. The lasing mode at the Γ band edge of GaN-based PCSELs can be identified by using the angled resolved spectroscopy and matched well to the results calculated by MSM. Threshold conditions in the GaN-based PCSELs with different boundary shapes are obtained by optical pumping and agree well with simulation results.
© 2011 Optical Society of America
Lasers and Laser Optics
Original Manuscript: March 8, 2011
Revised Manuscript: April 20, 2011
Manuscript Accepted: April 20, 2011
Published: May 13, 2011
Peng-Hsiang Weng, Tzeng-Tsong Wu, Tien-Chang Lu, and Shing-Chung Wang, "Threshold gain analysis in GaN-based photonic crystal surface emitting lasers," Opt. Lett. 36, 1908-1910 (2011)