Two-photon absorption in volume-absorbing materials may be significant for high-power, short-pulse excimer laser irradiation. In the present work, the effects of two-photon absorption on the laser intensity propagation and the penetration depth are investigated. The temperature history of a glass plate during pulsed ultraviolet (UV) laser heating is predicted. The results show that the two-photon absorption can compress the volume-absorbing effect to surface absorption and increase the peak temperature on the glass surface. This will reduce the damage threshold, increase the energy loss, and reduce the accuracy of pulsed-laser calorimeters.
Thermal Analysis of Multiphoton Absorption at 193 nm in Volume-Absorbing Glass
Contributed by the Heat Transfer Division for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received by the Heat Transfer Division March 1, 2001; revision received August 23, 2001. Associate Editor: D. Poulikakos.
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Zhang and , Z. M., and Chen , D. H. (August 23, 2001). "Thermal Analysis of Multiphoton Absorption at 193 nm in Volume-Absorbing Glass ." ASME. J. Heat Transfer. April 2002; 124(2): 391–394. https://doi.org/10.1115/1.1447940
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