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Opt Lett. 2009 Feb 1;34(3):298-300.

Electrical tunable random laser emission from a liquid-crystal infiltrated disordered planar microcavity.

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  • 1State Key Lab for Advanced Photonic Materials and Devices, Department of Optical Science and Engineering, Fudan University, Shanghai, China. qinghai.song@yale.edu


Here we report electric-field-induced, wavelength-tunable random lasing action in a liquid-crystal infiltrated disordered planar microcavity. With the increasing of external voltage from 0 V to 30 V, the emission wavelength of the random laser was continuously tuned from 648 nm to 597 nm. It was also tuned back to 648 nm again by reducing the voltage back to 0 V.

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