Nano-Scale Simulation of laser induced breakdown threshold in water
Publish place: 14th Iranian Conference on Electric Engineering
Publish Year: 1385
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICEE14_262
تاریخ نمایه سازی: 25 تیر 1387
Abstract:
In this paper, we have focused on breakdown threshold intensity of fast laser pulses interactions with matter. The selected material is water ,since it's an estimation of eye cornea in laser surgery .For the theoretical analysis we've used Quantum-Photonics model in nano-scopic and atomic scales. Simulation contains different time scales. First of all, energy injection during the Laser pulse, second collisions and the final stage is heat diffusion from focal point to neighbor sites. During the simulation, photons are traced down through the different layers of matter. For each layer probability of photon absorption, molecular ionization and molecular dissociation are investigated for different time scales. Results are fairly well comparable with experimental results from other centers. Also Plasma shielding and molecular dissociation have been observed.
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Authors
Hassan Kaatuzian
Amir Kabir University of Technology- Tehran- Iran
Ahmad Amjadi
Sharif University of Technology- Tehran-Iran
Hossein Mardanpour
Sharif University of Technology- Tehran-Iran
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