Characteristics of dielectric-band modified single-cell photonic crystal lasers

You Shin No, Ho Seok Ee, Soon Hong Kwon, Sun Kyung Kim, Min Kyo Seo, Ju Hyung Kang, Yong Hee Lee, Hong Gyu Park

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


We demonstrate new types of dielectric-band photonic crystal lasers in a two-dimensional modified single-cell cavity with enlarged air holes. Finite-difference time-domain simulations performed in real and Fourier spaces show that the dielectric-band cavity modes originating from the first band edge point in the dielectric band have mode patterns that are distinguishable from conventional air-band cavity modes. In our experiment, the observed multimode lasing peaks are identified as the hexapole and the monopole dielectric-band cavity modes through the spectral positions and mode images. The thresholds of these lasers are measured as ∼340 μW and ∼450 μW, respectively, at room temperature. In addition, using the simulation based on the actual fabricated structures, quality factors and mode volumes are computed as 4900 and 1.09 (λ/n)3 for the hexapole mode, and 4300 and 2.27 (λ/n)3 for the monopole mode, respectively.

Original languageEnglish
Pages (from-to)1679-1690
Number of pages12
JournalOptics Express
Issue number3
Publication statusPublished - 2009 Feb 2

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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