We propose a square photonic crystal point-shifted nanocavity, which sustains an ultra-small lowest-order whispering-gallery mode. Lasing actions with low threshold of 160 ?W and changed polarization due to a nearby nano-particle are observed.
© 2010 The Optical Society
(140.0140) Lasers and laser optics : Lasers and laser optics
(230.0230) Optical devices : Optical devices
(140.3948) Lasers and laser optics : Microcavity devices
(230.5298) Optical devices : Photonic crystals
T. Lu, P. Lin, K. Sio, and P. Lee, "Square Lattice Photonic Crystal Point-Shifted D<sup>0</sup>Nanocavity with Lowest-Order Whispering-Gallery Mode," in Conference on Lasers and Electro-Optics 2010, OSA Technical Digest (CD) (Optical Society of America, 2010), paper CWK5.