Multi-wavelength coherent random laser in bio-microfibers

Abstract

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.

Plasmonic random lasing and amplified spontaneous emission from donor–acceptor–donor dyes covered biocompatible silk fibroin film

“…30 By combining fluorescent molecules with highly transparent SF film with a one-dimensional periodic structure, the distributed feedback laser has also been realized. 31,32 Besides, scientists have also demonstrated the RL from the bio-compatible nanostructure SF, such as electrospun nanofibers 33 and inverse opals. 34…”

“…30 By combining fluorescent molecules with highly transparent SF film with a one-dimensional periodic structure, the distributed feedback laser has also been realized. 31,32 Besides, scientists have also demonstrated the RL from the bio-compatible nanostructure SF, such as electrospun nanofibers 33 and inverse opals. 34 Any organic p-structures that manifest strong photoluminescence efficiency are suitable candidates for manufacturing organic solid-state lasers and reveal great potential for generating amplified spontaneous emission (ASE).…”

Random laser emission from dye-doped polymer films enhanced by SiC nanowires

“…In the research of random lasers, the amplified scattering mechanism was taken to explain the lasing phenomenon, which was realized in a variety of disordered materials, including zero-dimensional nanoparticles [16,17], one-dimensional nanowires [18][19][20], nano fibers [21][22][23][24][25][26], and two-dimensional multilayers [27][28][29]. The one-dimensional nanostructures exhibit high-performance random lasing due to their simple morphology and tunability.…”

Dual-color plasmonic random lasers for speckle-free imaging

“…Multi-color laser sources with simple and low-cost preparation have broad applications in the fields of illumination and imaging [1][2][3][4]. Random lasers, based on multiple scattering feedback [5][6][7], are characterized with resonance cavityfree structures, low spatial coherence, flexible design, and simple fabrication process [8][9][10][11][12][13][14].…”