Multi-wavelength coherent random laser in bio-microfibers

Zhendong Xie, Kang Xie, Taoping Hu, Jiajun Ma, Junxi Zhang, Rui Ma, Xusheng Cheng, Jianquan Li, Zhijia Hu

Research output: Contribution to journalArticlepeer-review


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.
Original languageEnglish
Pages (from-to)5179-5188
Number of pages10
JournalOptics Express
Issue number4
Publication statusPublished - 10 Feb 2020

Bibliographical note

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Funding: National Natural Science Foundation of China (11404086, 11404087, 11574070, 11874012,
11874126, 51771186, 61501165); Fundamental Research Funds for the Central Universities
(JZ2019HGPA0099, PA2018GDQT0006); Southwest University of Science and Technology
(19FKSY0111); Anhui Province Key Laboratory of Environment-Friendly Polymer Materials
(KF2019001); H2020 Marie Skłodowska-Curie Actions (744817); China Postdoctoral Science
Foundation (2015M571917, 2017T100442).


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