A color-switchable ring-shaped random laser in momentum space
Optics
2019-10-07 v1 Applied Physics
Abstract
A color-switchable random laser is designed through directly coupling random laser with a commercial optical fiber. By using a simple approach of selectively coating the random gain layer on the surface of fiber, the red and yellow random lasers are respectively achieved with low threshold and good emission direction due to the guiding role of optical fibers. Moreover, the unique coupling mechanism leads to the random lasing with ring-shape in momentum space, indicating an excellent illuminating source for high-quality imaging with an extremely low speckle noise. More importantly, random lasing with different colors can be flexible obtained by simply moving the pump position.
Cite
@article{arxiv.1910.01942,
title = {A color-switchable ring-shaped random laser in momentum space},
author = {Yaoxing Bian and Xiaoyu Shi and Mengnan Hu and Zhaona Wang},
journal= {arXiv preprint arXiv:1910.01942},
year = {2019}
}