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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 4,
  • Issue 6,
  • pp. 326-328
  • (2006)

Approximate formulas of temperature and stress distributions and thermal induced effects in a heat capacity slab laser

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Abstract

Approximate formulas of transient temperature and stress distributions in the slab of a two-side pumped heat capacity laser are attained by solving the heat diffusion equation. Based on the formulas, the distributions of temperature and stress during the pump period of a two-sided symmetrically laser diode array (LDA) pumped Nd:GGG slab laser with 5-kW average output power are numerically simulated. The results show that the temperature in the slab will averagely increase by more than 70 Celsius degrees after operating for 10 seconds; the stress and maximum of the temperature difference in the slab are about 30 MPa and 24 Celsius degrees, respectively. The thermal induced effects are discussed also.

© 2006 Chinese Optics Letters

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