Electrically pumped semiconductor laser with low spatial coherence and directional emission
Optics
2020-12-25 v2
Abstract
We design and fabricate an on-chip laser source that produces a directional beam with low spatial coherence. The lasing modes are based on the axial orbit in a stable cavity and have good directionality. To reduce the spatial coherence of emission, the number of transverse lasing modes is maximized by fine-tuning the cavity geometry. Decoherence is reached in a few nanoseconds. Such rapid decoherence will facilitate applications in ultrafast speckle-free full-field imaging.
Cite
@article{arxiv.1905.03671,
title = {Electrically pumped semiconductor laser with low spatial coherence and directional emission},
author = {Kyungduk Kim and Stefan Bittner and Yongquan Zeng and Seng Fatt Liew and Qijie Wang and Hui Cao},
journal= {arXiv preprint arXiv:1905.03671},
year = {2020}
}