Translator Disclaimer
Presentation
4 March 2019 Transient cooling of a gallium-arsenide double heterostructure (Conference Presentation)
Author Affiliations +
Abstract
Laser cooling of gallium arsenide is of high industrial and academic interest and has been actively investigated using different experimental methods based on steady-state concepts. We demonstrate for the first time an onset of transient cooling in GaAs after an impulsive excitation, verified by two independent methods of time-resolved spectroscopy. We observe that transient cooling lasts for about 100 ps, becoming overwhelmed on longer timescales by parasitic heating associated with the nonlocal character of the background absorption processes. In addition, new insights into the physics of the Urbach tail excitation, being at the heart of the laser cooling in semiconductors, are revealed.
Conference Presentation
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jan F. Lippmann and Denis V. Seletskiy "Transient cooling of a gallium-arsenide double heterostructure (Conference Presentation)", Proc. SPIE 10936, Photonic Heat Engines: Science and Applications, 1093603 (4 March 2019); https://doi.org/10.1117/12.2511361
PROCEEDINGS
PRESENTATION


SHARE
Advertisement
Advertisement
Back to Top