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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2021, Volume 114, Issue 9, Pages 596–603
DOI: https://doi.org/10.31857/S1234567821210035 (Mi jetpl6539) 		 
This article is cited in 14 scientific papers (total in 14 papers)

OPTICS AND NUCLEAR PHYSICS

Stimulated emission and lasing in polyhedral ZnO microcrystals

A. P. Tarasova, L. A. Zadorozhnayaa, A. E. Muslimova, Ch. M. Briskinab, V. M. Kanevskya

a Federal Research Center Crystallography and Photonics, Russian Academy of Sciences, Moscow, 119333 Russia
b Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, 125009 Russia
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DOI: https://doi.org/10.31857/S1234567821210035
Abstract: The fabrication of efficient miniature ultraviolet laser sources, as well as the study of fundamental aspects of stimulated emission in such microlasers, is an actual aim of modern optoelectronics. In this work, features of photoluminescence and lasing on whispering gallery modes in polyhedral ZnO microcrystals synthesized through the vapor–liquid–solid mechanism have been studied. It has been shown that near-band-edge emission has different characters in microcrystals of different sizes: low-threshold lasing occurs in crystals 10–15 $\mu$m in size, whereas amplified spontaneous emission in a wide range of excitation power densities is observed in larger crystals with a size up to 80 $\mu$m. A low density of polyhedral microcrystals on a substrate and a large dispersion of their sizes allow the separate study of both types of emission. This circumstance makes these crystals promising for the investigation of stimulated emission accompanying lasing on whispering gallery modes. Analysis makes it possible to suggest that stimulated emission in the crystals under study is due to the scattering of electron–hole pairs by free carriers, which ensures a low threshold of lasing.
Funding agency Grant number
Russian Foundation for Basic Research 18-29-12099 мк
Ministry of Science and Higher Education of the Russian Federation RFMEFI62119X0035
This study was supported by the Ministry of Education and Science of the Russian Federation (state assignment for the Federal Research Center Crystallography and Photonics, fabrication of the films; state assignment for the Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, study of the laser properties of microstructures) and by the Russian Foundation for Basic Research (project no. 18-29-12099 mk, investigation of the optical properties of the films). The use of the equipment of the Shared Access Center of the Federal Research Center Crystallography and Photonics was supported by the Ministry of Education and Science of the Russian Federation (project no. RFMEFI62119X0035).
Received: 15.09.2021
Revised: 23.09.2021
Accepted: 23.09.2021
English version:
Journal of Experimental and Theoretical Physics Letters, 2021, Volume 114, Issue 9, Pages 517–523
DOI: https://doi.org/10.1134/S0021364021210116
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: A. P. Tarasov, L. A. Zadorozhnaya, A. E. Muslimov, Ch. M. Briskina, V. M. Kanevsky, “Stimulated emission and lasing in polyhedral ZnO microcrystals”, Pis'ma v Zh. Èksper. Teoret. Fiz., 114:9 (2021), 596–603; JETP Letters, 114:9 (2021), 517–523
Citation in format AMSBIB
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    • This publication is cited in the following 14 articles:
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