High-Power Pulsed, In-Well-Pumped InGaP/AlGaInP Heterostructure, Semiconductor Disk Laser

IF 0.6 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY Bulletin of the Lebedev Physics Institute Pub Date : 2024-07-27 DOI:10.3103/s1068335624600876

V. I. Kozlovsky, S. M. Zhenishbekov, Ya. K. Skasyrsky, M. P. Frolov

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Abstract

We report an investigation of a semiconductor disk laser (SDL) based on an InGaP/AlGaInP heterostructure emitting at a wavelength near 640 nm under in-well pumping by a pulsed rhodamine 6G dye laser with an emission wavelength of 601 nm. Use is made of structures with 25 quantum wells arranged in depth with a period of 193 nm. In a structure with a built-in Bragg mirror, a power of 3.5 W is reached at a wavelength of 642 nm with a slope efficiency of 7% with respect to the absorbed pump power. The achieved second harmonic power at a wavelength of 321 nm is approximately 30% of the maximum SDL power at the fundamental frequency. Under pumping above 250 W, the structure is destroyed due to strong adiabatic heating of the GaAs growth substrate. In a structure with a deposited broadband dielectric mirror, it is possible to reduce the adiabatic heating factor, implement double-pass pumping, and, accordingly, increase the supplied pump power. This makes it possible to obtain a pulse power of higher than 70 W at a wavelength of 645.5 nm with a slope efficiency of over 17%.

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高功率脉冲、阱内泵浦 InGaP/AlGaInP 异质结构半导体盘式激光器

摘要我们报告了对基于 InGaP/AlGaInP 异质结构的半导体盘式激光器（SDL）的研究，该激光器在发射波长为 601 nm 的脉冲罗丹明 6G 染料激光器的阱内泵送下，发射波长接近 640 nm。这种结构具有 25 个量子阱，以 193 nm 的周期深度排列。在一个内置布拉格反射镜的结构中，波长为 642 nm 的功率达到了 3.5 W，相对于吸收的泵浦功率，斜率效率为 7%。波长为 321 nm 的二次谐波功率约为基频最大 SDL 功率的 30%。在超过 250 W 的泵浦功率下，由于砷化镓生长基底的强烈绝热加热，结构会被破坏。在具有沉积宽带电介质镜的结构中，可以降低绝热加热系数，实施双通泵浦，并相应地提高所提供的泵浦功率。这样，在波长为 645.5 纳米的波段上就能获得超过 70 W 的脉冲功率，斜率效率超过 17%。

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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.