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Abstract— <p>A laser on a CdSSe single crystal with a wavelength of 623.5 nm with longitudinal two-photon pumping by radiation from a Q-switched Nd : YAP laser has been studied. When the single crystal was cooled to liquid nitrogen temperature, a peak power of up to 80 kW was achieved with a pulse duration of 7 ns and an efficiency of ~3%. The full divergence angle of the laser depended on the pump spot diameter and was approximately 30° at a 1-mm diameter. The power was limited by the crystal-surface destruction. Ways to improve the laser performance are discussed.</p>

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A Powerful Laser on a CdSSe Crystal with a Radiation Wavelength of 623.5 nm under Longitudinal Two-Photon Pumping

  • 期刊论文

  • 发表日期：

    2025年12月18日

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  • V. I. Kozlovsky,
  • Ya. K. Skasyrsky,
  • M. P. Frolov

摘要

Abstract—

A laser on a CdSSe single crystal with a wavelength of 623.5 nm with longitudinal two-photon pumping by radiation from a Q-switched Nd : YAP laser has been studied. When the single crystal was cooled to liquid nitrogen temperature, a peak power of up to 80 kW was achieved with a pulse duration of 7 ns and an efficiency of ~3%. The full divergence angle of the laser depended on the pump spot diameter and was approximately 30° at a 1-mm diameter. The power was limited by the crystal-surface destruction. Ways to improve the laser performance are discussed.