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

Authors
No, You-ShinEe, Ho-SeokKwon, Soon-HongKim, Sun-KyungSeo, Min-KyoKang, Ju-HyungLee, Yong-HeePark, Hong-Gyu
Issue Date
2-2월-2009
Publisher
OPTICAL SOC AMER
Citation
OPTICS EXPRESS, v.17, no.3, pp.1679 - 1690
Indexed
SCIE
SCOPUS
Journal Title
OPTICS EXPRESS
Volume
17
Number
3
Start Page
1679
End Page
1690
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120594
DOI
10.1364/OE.17.001679
ISSN
1094-4087
Abstract
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 similar to 340 mu W and similar to 450 mu W, 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 (lambda/n)(3) for the hexapole mode, and 4300 and 2.27 (lambda/n)(3) for the monopole mode, respectively. (C) 2009 Optical Society of America
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