Square-lattice photonic band-gap single-cell laser operating in the lowest-order whispering gallery mode

Han Youl Ryu, Se Heon Kim, Hong Kyu Park, Jeong Ki Hwang, Yong Hee Lee, Jeong Soo Kim

Research output: Contribution to journalArticle

149 Citations (Scopus)


Square-lattice photonic band-gap lasers are realized at room temperature from single-cell photonic crystal slab microcavities fabricated in InGaAsP quantum-well materials emitting at 1.5 μm. This single-cell photonic band-gap laser operates in a class of two-dimensional mode to be classified as the smallest possible whispering gallery mode with genuine energy null at the center. The low-loss nondegenerate mode with modal volume of 0.1 (λ/2)3 demonstrates a spectrometer-limited below-threshold quality factor >2000 and a theoretical quality factor >10000. The other class of photonic crystal lasers is also observed outside the photonic band gap of the square lattice, operating in the dipole mode.

Original languageEnglish
Pages (from-to)3883-3885
Number of pages3
JournalApplied Physics Letters
Issue number21
Publication statusPublished - 2002 May 27
Externally publishedYes


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this