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<p>Within the framework of the quasi-static unrelated problem of thermoelasticity, a criterion for the thermal strength of a freely pinched plate during pulsed laser annealing is obtained, taking into account the reflection of laser radiation from the back surface of the plate. The possibility of reducing the maximum tensile stresses in the plate by 15 – 65% and energy costs for annealing by 8 – 30% is shown. It was established that consideration of the reflection of laser radiation from the back surface of the plate leads to a decrease in the interval of variations of the dimensionless parameter ÷<i>h</i> (the product of the absorption index by the plate thickness), in which thermoelastic stresses may cause plate destruction.</p>

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Consideration of Reflection from the Back Surface During Laser Annealing of Optical Glass Plates with High Refractive Index Values

  • 期刊论文

  • 发表日期：

    2025年9月10日

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  • V. I. Butin,
  • A. F. Kovalenko

摘要

Within the framework of the quasi-static unrelated problem of thermoelasticity, a criterion for the thermal strength of a freely pinched plate during pulsed laser annealing is obtained, taking into account the reflection of laser radiation from the back surface of the plate. The possibility of reducing the maximum tensile stresses in the plate by 15 – 65% and energy costs for annealing by 8 – 30% is shown. It was established that consideration of the reflection of laser radiation from the back surface of the plate leads to a decrease in the interval of variations of the dimensionless parameter ÷h (the product of the absorption index by the plate thickness), in which thermoelastic stresses may cause plate destruction.