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Acoustic waves produced by a 5 ns pulse of 1.06 μm infrared energy from a commercial Nd:YAG laser incident on a fluid with acoustic properties similar to those of tissue.
| Energy penetration depth L mm | Pulse width (ns) | Assumed energy density absorbed in the head, J/m2 | Incremental temperature rise at the tissue surface after each pulse (μK) | Peak pressure increase, Pa (dB re 20 μPa) | Peak acoustic frequency (kHz) |
|---|---|---|---|---|---|
| 3.5 | 5 | 1 | 76 | 28 (123) | 68 |
Calculations based on (3).
