摘要
A band-gap-tailored random laser with a wide tunable range and low threshold through infrared radiation is demonstrated. When fluorescent dyes are doped into the liquid crystal and heavily doped chiral agent system,we demonstrate a wavelength tuning random laser instead of a side-band laser, which is caused by the combined effect of multi-scattering of liquid crystal(LC) and band-gap control. Through rotating the infrared absorbing material on the side of the LC cell, an adjustable range for random lasing of 80 nm by infrared light irradiation was observed.
A band-gap-tailored random laser with a wide tunable range and low threshold through infrared radiation is demonstrated. When fluorescent dyes are doped into the liquid crystal and heavily doped chiral agent system, we demonstrate a wavelength tuning random laser instead of a side-band laser, which is caused by the combined effect of multi-scattering of liquid crystal （LC） and band-gap control. Through rotating the infrared absorbing material on the side of the LC cell, an adjustable range for random lasing of 80 nm by infrared light irradiation was observed.
基金
Natural Science Foundation of Anhui Province,China(1708085MF150)
National Natural Science Foundation of China(NSFC)(61107014,51573036,11404087,11574070)
China Postdoctoral Science Foundation(2015M571918,2017T100442)
H2020 Marie Sklodowska-Curie Actions(MSCA)(744817)
Fundamental Research Funds for the Central Universities,China(JD2017JGPY0006,JZ2017HGTB0187,PA2017GDQT0024)
