Study of the spatial characteristics of emission of surface-emitting ring quantum-cascade lasers

Autor:	null Sokolovskii G.S., null Egorov A.Yu., null Pikhtin N. A., null Novikov I.I., null Karachinsky L.Ya., null Evtikhiev V. P., null Dudelev V. V., null Lyutetskii A. V., null Slipchenko S.O., null Denisov D. V., null Mitrofanov M. И., null Voznyuk G. V., null Gladyshev A. G., null Kolodeznyi E.S., null Chistyakov D. V., null Mikhailov D. A., null Babichev A.V.
Rok vydání:	2022
Zdroj:	Semiconductors. 56:436
ISSN:	1726-7315
Popis:	The results of studies of ring quantum-cascade lasers with surface emission due to a second-order grating formed in the top cladding layers are presented. Surface emission near 7.85 μm with a low threshold current density (3.8 kA/cm2), in comparison with ridge quantum-cascade lasers of the same cavity length is demonstrated. The results of measurements of the intensity distribution of the near and far fields at different pumping levels are presented. The estimated value of the angle of beam extraction relative to the surface normal is in the range (5.7-6.7)o. Keywords: ring cavity, grating, focused ion beam (FIB) etching, superlattices, quantum-cascade laser, epitaxy, indium phosphide.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::d94b1735ef51ce51a86b3ec846d6baf6 https://doi.org/10.21883/sc.2022.06.53547.9825 Zobrazit plný text záznamu