Ultrasmall square-lattice zero-cell photonic crystal laser

Ho Seok Ee, Kwang Yong Jeong, Min Kyo Seo, Yong Hee Lee, Hong Gyu Park

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)


We report optically pumped room-temperature lasing in a square-lattice photonic crystal cavity consisting of two shifted lattice points and heterogeneous lattices with different air hole sizes. Three-dimensional finite-difference time-domain simulation shows that this cavity has an ultrasmall mode volume of 0.017 μ m3 ∼1.7 (λ2 nslab)3. Photoluminescence spectroscopy exhibits pulsed lasing action at 1511 nm with a low lasing threshold of ∼130 μW. The measured Q factor is ∼2400 that is well agreed with the theoretical Q of 4200. In addition, the computational analysis based on the actual fabricated structural parameters unambiguously presents the successful demonstration of this ultrasmall lasing mode.

Original languageEnglish
Article number011104
JournalApplied Physics Letters
Issue number1
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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