25 April 2012 Band-edge lasing and miniband lasing in 1-D dual-periodic photonic crystal
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Herein, we report two different dual-periodic Photonic Crystals (PCs) in dichromated gelatin emulsion which are fabricated by four-beam holography and double-exposure holography. The minibands with high Q-factors have been evidently located in both two structures. By taking into account the non-uniform distribution of material, the numerical results agree quite well with the experimental results. We also compared the band-edge lasing in single-periodic PC and miniband lasing in Moiré dual-periodic PC. Due to extremely flat dispersion and large mode volume of the miniband, high optical conversion efficiency in miniband lasing is achieved as compared with that of band-edge lasing. Such effect may provide potential applications in low-threshold lasers and ultra-sensitive fluorescent probes in biological assays.
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Cui-Feng Ying, Cui-Feng Ying, Wen-Yuan Zhou, Wen-Yuan Zhou, Yi Li, Yi Li, Qing Ye, Qing Ye, Chun-Ping Zhang, Chun-Ping Zhang, Jian-Guo Tian, Jian-Guo Tian, "Band-edge lasing and miniband lasing in 1-D dual-periodic photonic crystal", Proc. SPIE 8425, Photonic Crystal Materials and Devices X, 84251E (25 April 2012); doi: 10.1117/12.919840; https://doi.org/10.1117/12.919840

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