Study of the Spatial Characteristics of Emission of Surface-Emitting Ring Quantum-Cascade Lasers

被引：0
|
作者：
A. V. Babichev
D. A. Mikhailov
D. V. Chistyakov
E. S. Kolodeznyi
A. G. Gladyshev
G. V. Voznyuk
M. I. Mitrofanov
D. V. Denisov
S. O. Slipchenko
A. V. Lyutetskii
V. V. Dudelev
V. P. Evtikhiev
L. Ya. Karachinsky
I. I. Novikov
N. A. Pikhtin
A. Yu. Egorov
G. S. Sokolovskii
机构：
[1] ITMO University,
[2] Ioffe Institute,undefined
[3] St. Petersburg State Electrotechnical University “LETI”,undefined
[4] Submicron Heterostructures for Microelectronics,undefined
[5] Research and Engineering Center,undefined
[6] Russian Academy of Sciences,undefined
[7] Alferov Federal State Budgetary Institution of Higher Education and Science St. Petersburg National Research Academic University,undefined
[8] Russian Academy of Sciences,undefined
来源：
Semiconductors | 2023年 / 57卷
关键词：
: ring cavity; grating; focused ion beam (FIB) etching; superlattices; quantum-cascade laser; epitaxy; indium phosphide;
D O I：
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学科分类号：
摘要：
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°.
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页码：377 / 382
页数：5
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