Open AccessMulti-wavelength coherent random laser in bio-microfibers
Author(s) -
Zhendong Xie,
Kang Xie,
Taoping Hu,
Jiajun Ma,
Junxi Zhang,
Rui Ma,
Xinyi Cheng,
Jianquan Li,
Zhenjiang Hu
Publication year - 2020
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.384105
Subject(s) - random laser , microfiber , lasing threshold , materials science , fibroin , optics , laser , optoelectronics , amplified spontaneous emission , fiber laser , wavelength , speckle pattern , coherence (philosophical gambling strategy) , silk , physics , quantum mechanics , composite material
In this paper, pure silk protein was extracted from Bombyx mori silks and fabricated into a new kind of disordered bio-microfiber structure using electrospinning technology. Coherent random lasing emission with low threshold was achieved in the silk fibroin fibers. The random lasing emission wavelength can be tuned in the range of 33 nm by controlling the pump location with different scattering strengths. Therefore, the bio-microfiber random lasers can be a wide spectral light source when the system is doped with a gain or energy transfer medium with a large fluorescence emission band. Application of the random lasers of the bio-microfibers as a low-coherence light source in speckle-free imaging had also been studied.