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January 1, 1995IEEE Journal of Quantum Electronics

A first-order model for computation of laser-induced breakdown thresholds in ocular and aqueous media. I. Theory

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Authors

PKPaul K. Kennedy59th Medical Wing

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Implication

Theoretical modeling study demonstrates analytic calculation of laser-induced breakdown thresholds in ocular and aqueous media, indicating predictive capabilities across ultrashort laser pulse...

Key Points

  • Develop an analytic, first-order theoretical model to calculate irradiance thresholds for laser-induced breakdown in ocular and aqueous condensed media.
  • Formulated rate equations combining Shen's cascade breakdown model in solids with Keldysh's multiphoton ionization theory for condensed media.
  • Derived analytic expressions for multiphoton breakdown, cascade breakdown, and multiphoton initiation of seed electrons.
  • Implemented the mathematical expressions into computational code structured for nanosecond, picosecond, and femtosecond pulse durations in visible and near-infrared spectra.
  • Obtained closed-form analytic solutions defining irradiance thresholds for both pure cascade and pure multiphoton breakdown mechanisms.
  • Established quantitative threshold expressions for cascade breakdown initiation driven by multiphoton-generated seed electrons across condensed aqueous media.

Cite This Study

Paul K. Kennedy (1995) studied this question.

synapsesocial.com/papers/6a7015e5b27f158178272feehttps://doi.org/10.1109/3.477753
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Also Consider

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