Jump to main content
Jump to site search


A ring-shaped random laser in momentum space

Author affiliations

Abstract

A ring-shaped random laser in momentum space is designed by directly coupling a random laser with a commercial optical fiber. By using a simple approach of selectively coating the random gain layer on the surface of the fiber, red and yellow random lasers are respectively achieved with low threshold values and a good emission direction due to the guiding role of optical fibers. The unique coupling mechanism leads to a random laser with a ring shape in momentum space, which is an excellent illuminating source for high-quality imaging with an extremely low speckle noise. More importantly, a triple-state color-switchable random laser with yellow, red and yellow-red dual-colors can be flexible, and is obtained by simply moving the pump position. The results may promote the practical applications of random lasers in the fields of sensing, in vivo biological imaging, and high brightness full-field illumination.

Graphical abstract: A ring-shaped random laser in momentum space

Back to tab navigation

Supplementary files

Article information


Submitted
16 Aug 2019
Accepted
29 Dec 2019
First published
30 Dec 2019

Nanoscale, 2020, Advance Article
Article type
Paper

A ring-shaped random laser in momentum space

Y. Bian, X. Shi, M. Hu and Z. Wang, Nanoscale, 2020, Advance Article , DOI: 10.1039/C9NR07034F

Social activity

Search articles by author

Spotlight

Advertisements