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Square lattice photonic crystal surface mode lasers

Tsan-Wen Lu, Shao-Ping Lu, Li-Hsun Chiu, Po-Tsung Lee
2010 Optics Express  
In this report, we propose a square lattice photonic crystal heteroslab-edge microcavity design. In numerical simulations, three surface modes in this microcavity are investigated and optimized by tuning the slab-edge termination τ and gradual mirror layer. High simulated quality (Q) factor of 2.3 × 10 5 and small mode volume of 0.105 μm 3 are obtained from microcavity with τ = 0.80. In experiments, we obtain and identify different surface modes lasing. The surface mode in the second photonic
more » ... e second photonic band gap shows a very-low threshold of 140 μW and high Q factor of 5,500, which could be an avenue to low-threshold optical lasers and highly sensitive sensor applications with efficient light-matter interactions.
doi:10.1364/oe.18.026461 pmid:21164996 fatcat:bra4jeigingvddayh76sytn6u4