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Abstract <p>This paper reports on the development of a laser stand based on a Cr:Yb:Ho:YSGG laser (<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\lambda=2.87\)</EquationSource> <!--OptelIns2570072Sirotkin-m3--> </InlineEquation> <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(\mu\)</EquationSource> <!--OptelIns2570072Sirotkin-m4--> </InlineEquation>m) with a pulse energy of 15 mJ and a pulse duration of 40 ns, operating in Q-switched mode. The stand is designed for measuring the radiation resistance of optical elements used at the wavelength range of 3 <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\mu\)</EquationSource> <!--OptelIns2570072Sirotkin-m5--> </InlineEquation>m and for other experiments on the interaction of radiation with matter. The features of measuring the laser radiation caustics near the focal plane of a lens with <InlineEquation ID="IEq6"> <EquationSource Format="TEX">\(f=50\)</EquationSource> <!--OptelIns2570072Sirotkin-m6--> </InlineEquation> mm using the scanning knife-edge method with different temporal structures of the radiation pulse are discussed. The energy density on the surface of the optical element under study with a laser spot diameter of <InlineEquation ID="IEq7"> <EquationSource Format="TEX">\({\approx}\)</EquationSource> <!--OptelIns2570072Sirotkin-m7--> </InlineEquation>160 <InlineEquation ID="IEq8"> <EquationSource Format="TEX">\(\mu\)</EquationSource> <!--OptelIns2570072Sirotkin-m8--> </InlineEquation>m can be smoothly varied within the range of <InlineEquation ID="IEq9"> <EquationSource Format="TEX">\(1{-}52\)</EquationSource> <!--OptelIns2570072Sirotkin-m9--> </InlineEquation> J cm<InlineEquation ID="IEq10"> <EquationSource Format="TEX">\({}^{-2}\)</EquationSource> <!--OptelIns2570072Sirotkin-m10--> </InlineEquation> </p>

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Laser Stand for Measuring the Radiation Resistance of Optical Elements at a Wavelength of 2.87 \(\boldsymbol{\mu}\)m

  • 期刊论文

  • 发表日期：

    2025年10月1日

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  • A. A. Sirotkin,
  • V. R. Sorochenko

摘要

Abstract

This paper reports on the development of a laser stand based on a Cr:Yb:Ho:YSGG laser ( \(\lambda=2.87\) \(\mu\) m) with a pulse energy of 15 mJ and a pulse duration of 40 ns, operating in Q-switched mode. The stand is designed for measuring the radiation resistance of optical elements used at the wavelength range of 3 \(\mu\) m and for other experiments on the interaction of radiation with matter. The features of measuring the laser radiation caustics near the focal plane of a lens with \(f=50\) mm using the scanning knife-edge method with different temporal structures of the radiation pulse are discussed. The energy density on the surface of the optical element under study with a laser spot diameter of \({\approx}\) 160 \(\mu\) m can be smoothly varied within the range of \(1{-}52\) J cm \({}^{-2}\)