Medical Lasers
Laser devices engineered for surgical cutting, tissue coagulation, and photomedical treatments exploiting specific light-tissue absorption interactions.
Governing formula
Selective Photothermolysis: Laser Pulse Duration ≤ Thermal Relaxation Time τ_r
SI unit
W or J/cm² (Fluence)
In depth
Target chromophores (hemoglobin, melanin, water) selectively absorb specific laser wavelengths. CO₂ lasers (10.6 μm) are strongly absorbed by tissue water for surgical vaporizing; Argon lasers (514 nm) target vascular lesions.
Examples in the real world
Excimer UV lasers (193 nm) reshaping corneal curvature in LASIK refractive vision surgery.