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Lasing from Dye-doped Photonic Crystals with Graded Layers in Dichromate Gelatin Emulsions

Authors Kok, Mang Hin HKUST affiliated (currently or previously)
Lu, Weixin HKUST affiliated (currently or previously)
Lee, Jeffrey Chi Wai HKUST affiliated (currently or previously)
Tam, Wing Yim View this author's profile
Wong, George K.L. View this author's profile
Chan, C.T. View this author's profile
Issue Date 2008
Source Applied physics letters , v. 92, (15), 2008, APR 14, article number 151108
Summary We report on optically pumped lasing from dye-doped, graded-spacing layer structures of dichromate gelatin emulsions fabricated using two-beam holographic interference. The graded layers exhibited deep and wide photonic band gaps. Multimode lasing with both a low threshold and a high quality factor was observed at the band edge of the photonic band gap. We modeled the emissions from the dye-doped graded layer system using a finite difference time domain technique and achieved good agreement with experimental results. (C) 2008 American Institute of Physics.
ISSN 0003-6951
Rights Applied Physics Letters © copyright (2008) American Institute of Physics. The Journal's web site is located at
Language English
Format Article
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