Square lattice photonic crystal surface mode lasers

Tsan Wen Lu*, Shao Ping Lu, Li Hsun Chiu, Po Tsung Lee

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


In this report, we propose a square lattice photonic crystal hetero-slab-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 × 105 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 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.

Original languageEnglish
Pages (from-to)26461-26468
Number of pages8
JournalOptics Express
Issue number25
StatePublished - 6 Dec 2010

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