Lasing from dye-doped photonic crystals with graded layers in dichromate gelatin emulsions

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...

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Bibliographic Details
Published in:Applied physics letters 2008-04, Vol.92 (15), p.151108-151108-3
Main Authors: Kok, Mang Hin, Lu, Weixin, Lee, Jeffrey Chi Wai, Tam, Wing Yim, Wong, George K. L., Chan, C. T.
Format: Article
Language:English
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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.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2907488