期刊
APPLIED PHYSICS EXPRESS
卷 1, 期 1, 页码 -出版社
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/APEX.1.012003
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Electrical tuning of laser wavelength is demonstrated using a liquid-crystal/polymer grating fabricated by nanoimprint lithography. Laser emission occurs at a wavelength near 700 nm, which corresponds to the first order of a 200 nm period grating. With increasing applied voltage, the lasing spectrum begins to shift to shorter wavelengths at 10 V, and then a 10 nm shift is achieved with an applied voltage of 30V. This is due to the refractive index change of the liquid crystal in the trench of the polymer grating by field-induced molecular reorientation. (c) 2008 The Japan Society of Applied Physics.
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