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- Title
Influence of Output Optical Losses on the Dynamic Characteristics of 1.55-μm Wafer-Fused Vertical-Cavity Surface-Emitting Lasers.
- Authors
Blokhin, S. A.; Bobrov, M. A.; Blokhin, A. A.; Kuzmenkov, A. G.; Maleev, N. A.; Ustinov, V. M.; Kolodeznyi, E. S.; Rochas, S. S.; Babichev, A. V.; Novikov, I. I.; Gladyshev, A. G.; Karachinsky, L. Ya.; Denisov, D. V.; Voropaev, K. O.; Ionov, A. S.; Egorov, A. Yu.
- Abstract
The results of studying the dynamic characteristics of 1.55-μm single-mode vertical-cavity surface-emitting lasers (VCSELs) formed by the fusion of wafers of high-quality Bragg reflectors and an active region based on thin highly strained InGaAs/InAlGaAs quantum wells are presented. It is found that the proposed design of the active region and optical microcavity of the laser make it possible in principle to attain a high level of differential laser gain in the temperature range of 20°C–85°C, but weak electron localization leads to an increase in gain compression at elevated temperatures. Due to this fact, the VCSEL modulation bandwidth at 20°C can be increased from 9.2 to 11.5 GHz due to an increase in output optical losses, while the modulation bandwidth at 85°C does not exceed 8.5 GHz, depends weakly on the output optical losses, and is mainly limited by the optical-gain saturation.
- Subjects
SURFACE emitting lasers; OPTICAL losses
- Publication
Semiconductors, 2019, Vol 53, Issue 8, p1104
- ISSN
1063-7826
- Publication type
Article
- DOI
10.1134/S1063782619080074