Journal
OPTICA
Volume 8, Issue 8, Pages 1033-1039Publisher
OPTICAL SOC AMER
DOI: 10.1364/OPTICA.428217
Keywords
-
Categories
Funding
- Israel Science Foundation [1871/15, 2074/15, 2630/20]
- United States-Israel Binational Science Foundation [2015694]
- Air Force Office of Scientific Research [FA9550-18-1-0208]
- CNRS
- Planning and Budgeting Committee of the Council for Higher Education of Israel
- MAFAT [4440938424]
- PICSALAMO
Ask authors/readers for more resources
In sufficiently strong scattering media, light transport is suppressed and modes are exponentially localized.We demonstrate that all lasing modes are spatially localized by undoing gain competition and cross-saturation, and selectively exciting the modes.By efficiently suppressing the spatial hole burning effect, we can turn on the optimally outcoupled random lasing modes.
In sufficiently strong scattering media, light transport is suppressed and modes are exponentially localized. Anderson-like localized states have long been recognized as potential candidates for high- Q optical modes for low-threshold, cost-effective random lasers. Operating in this regime remains, however, a challenge since Anderson localization is difficult to achieve in optics, and nonlinear mode interaction compromises its observation. Here, we exhibit individually each lasing mode of a low-dimension solid-state random laser by applying a non-uniform optical gain. By undoing gain competition and cross-saturation, we demonstrate that all lasing modes are spatially localized. We find that selective excitation significantly reduces the lasing threshold, while lasing efficiency is greatly improved. We show further how their spatial locations are critical to boost laser power efficiency. By efficiently suppressing the spatial hole burning effect, we can turn on the optimally outcoupled random lasing modes. Our demonstration opens the road to the exploration of linear and nonlinear mode interactions in the presence of gain, as well as disorder-engineering for laser applications. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available