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Updated: May 19, 2026
Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
Published on: May 29, 2018
Multimode lasing from the microcavity of an octagonal quasi-crystal based on holographic polymer-dispersed liquid
Ming Shian Li1, Andy Ying-Guey Fuh, Shing-Trong Wu
1Department of Physics, National Cheng Kung University, Tainan 701, Taiwan.
Abstract:
An eightfold photonic quasi-crystal (PQC) sample is fabricated holographically using two-beam interference with multi-exposure based on polymer-dispersed liquid crystals. The transmission spectra from the finite-difference time-domain (FDTD) simulation prove the photonic stop band of the rotational symmetry structure of the sample. The resonant mode of the circular microcavity formed in the PQC is calculated. Amplified spontaneous emission and multimode lasing action are demonstrated from the pumped laser-dye-doped PQC microcavity using a Q-switched neodymium-doped yttrium aluminum garnet (Nd:YAG) pulse laser.
