InGaAs/AlInAs/InP Quantum-Cascade Lasers with Reflective and Antireflective Optical Coatings

IF 0.6 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Bulletin of the Lebedev Physics Institute Pub Date : 2024-11-25 DOI:10.3103/S1068335624601742

K. A. Podgaetskii, A. V. Lobintsov, A. I. Danilov, A. V. Ivanov, M. A. Ladugin, A. A. Marmalyuk, E. V. Kuznetsov, V. V. Dyudelev, D. A. Mikhailov, D. V. Chistyakov, E. A. Kognovitskaya, S. N. Losev, S. Kh. Abdulrazak, A. V. Babichev, G. M. Savchenko, A. V. Lyutetskii, S. O. Slipchenko, N. A. Pikhtin, A. G. Gladyshev, I. I. Novikov, L. Ya. Karachinsky, A. Yu. Egorov, G. S. Sokolovskii

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Abstract

Quantum-cascade lasers (QCLs) based on InGaAs/AlInAs/InP with reflective and antireflective coatings are fabricated and studied. The manufactured lasers emit in the spectral range from 4 to 5 μm. The effect of variation in the front mirror reflectance on the output power of a QCL with a highly reflective rear mirror is investigated. It is shown that the use of an antireflective coating on the front face leads to a simultaneous increase in both the threshold current of the QCL and the slope of the light–current characteristic. This allows a higher output power to be achieved at high pump currents. In contrast, the use of a partially reflective coating on the front face not only reduces the threshold current of the QCL, but also decreases the slope of the light–current characteristic. Such QCLs may have an advantage over other emitters at low pump currents.

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具有反射和抗反射光学涂层的 InGaAs/AlInAs/InP 量子级联激光器

我们制作并研究了基于 InGaAs/AlInAs/InP 的量子级联激光器 (QCL)，该激光器具有反射和抗反射涂层。制造的激光器在 4 至 5 μm 光谱范围内发光。研究了前反射镜反射率的变化对带有高反射后反射镜的 QCL 输出功率的影响。研究表明，在前镜面上使用抗反射涂层可同时提高 QCL 的阈值电流和光-电流特性斜率。这样就能在高泵电流下实现更高的输出功率。相反，在正面使用部分反射涂层不仅会降低 QCL 的阈值电流，还会降低光-电流特性的斜率。这种 QCL 在低泵电流时可能比其他发射器更具优势。

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来源期刊

Bulletin of the Lebedev Physics Institute PHYSICS, MULTIDISCIPLINARY-

CiteScore

0.70

自引率

25.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.