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Low-pressure cesium and potassium diode pumped alkali lasers: pros and cons

机译：低压铯钾钾泵浦碱金属激光器的优缺点

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摘要

This paper presents the results of our experiments on a comparative study of cesium and potassium diode pumped alkali lasers (DPALs) aimed to determine which of these two lasers has more potential to scale to high powers. For both lasers, we have chosen a "low-pressure DPAL approach," which uses buffer gas pressure of about 1 atm for spin-orbit mixing of the excited states of alkali atoms to provide population inversion in the gain medium. The goal of this study was to determine power-limiting effects, which affect the performance of these DPALs, and find out how these limiting effects can be mitigated. We studied the performance of both lasers in CW and pulsed modes using both static and flowing gain medium and pump with different pulse duration. We observed output power degradation in time from the initial value to the level corresponding to the CW mode of operation. As a result of this study, some essential positive and negative features of both DPALs were revealed, which should be taken into account for power-scaling experiments.
机译：本文介绍了我们对铯和钾二极管泵浦碱金属激光器（DPAL）进行比较研究的实验结果，旨在确定这两种激光器中哪一个具有更大的潜力可放大至高功率。对于这两种激光器，我们都选择了“低压DPAL方法”，该方法使用约1个大气压的缓冲气体压力对碱原子的激发态进行自旋轨道混合，以提供增益介质中的粒子数反转。这项研究的目的是确定影响这些DPAL性能的功率限制效应，并找出如何减轻这些限制效应。我们使用静态和流动增益介质以及具有不同脉冲持续时间的泵浦研究了连续波和脉冲模式下两种激光器的性能。我们观察到输出功率随时间从初始值下降到与CW操作模式相对应的水平。这项研究的结果是，揭示了两种DPAL的一些基本的正反特性，在功率缩放实验中应予以考虑。

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  • 来源
    《Optical engineering》 |2016年第2期|026105.1-026105.6|共6页
  • 作者

    Boris V. Zhdanov; Matthew D. Rotondaro; Michael K. Shaffer; Randall J. Knize;

  • 作者单位

    United States Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Suite 2A31, USAF Academy, Colorado 80840, United States;

    United States Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Suite 2A31, USAF Academy, Colorado 80840, United States;

    United States Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Suite 2A31, USAF Academy, Colorado 80840, United States;

    United States Air Force Academy, Laser and Optics Research Center, 2354 Fairchild Drive, Suite 2A31, USAF Academy, Colorado 80840, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    atomic gas lasers; lasers; diode-pumped; diode pumped alkali lasers;

    机译：原子气体激光器;激光二极管泵浦二极管泵浦碱金属激光器;

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