Abstract

Photonic band gap structures have a high potential for nearly zero-threshold lasers. This paper describes new-types of low-threshold photonic crystal lasers fabricated in InGaAsP slab waveguides free-standing in air. Two-types of photonic crystal lasers are studied. One is a single-cell nano-cavity laser formed in a square array of air holes. This photonic band gap laser operates in the smallest possible whispering gallery mode with a theoretical Q >30000 and exhibits low threshold pump power of 0.8 mW at room temperature. The nther laser does not have any cavity structure and the lasing operation originates from the enhanced optical density of states near photonic band edges. A very low threshold of 35 <TEX>$\mu$</TEX>W (incident pump power) is achieved from this laser at 80 K, one of the lowest values ever reported. This low threshold is benefited from low optical losses as well as enhanced material gain at low temperature.

© 2002 Optical Society of Korea

Low-threshold lasing action in photonic crystal slabs enabled by Fano resonances

Song-Liang Chua, Yidong Chong, A. Douglas Stone, Marin Soljačić, and Jorge Bravo-Abad
Opt. Express 19(2) 1539-1562 (2011)

Modeling and experimental investigations of Fano resonances in free-standing LiNbO₃ photonic crystal slabs

Jun Deng, Sajid Hussain, Vanga Sudheer Kumar, Wei Jia, Ching Eng Png, Lim Soon Thor, Andrew A. Bettiol, and Aaron J. Danner
Opt. Express 21(3) 3243-3252 (2013)

Photonic crystal lasers in InGaAsP on a SiO₂/Si substrate and its thermal impedance

M. H. Shih, Adam Mock, M. Bagheri, N.-K. Suh, S. Farrell, S.-J. Choi, J. D. O’Brien, and P. D. Dapkus
Opt. Express 15(1) 227-232 (2007)

Asymmetric design of photonic crystal surface-emitting lasers with low-threshold characteristics

Chih-Tsang Hung, Tsung-Lin Ho, and Tien-Chang Lu
Appl. Opt. 52(23) 5851-5855 (2013)

Small, low-loss heterogeneous photonic bandedge laser

Soon-Hong Kwon, Se-Heon Kim, Sun-Kyung Kim, Yong-Hee Lee, and Sung-Bock Kim
Opt. Express 12(22) 5356-5361 (2004)