Selective delivery of laser energy to biological tissue based on refractive-index differences

Yacov Domankevitz, Jerry Waldman, Charles P. Lin, R. Rox Anderson
2000 Optics Letters  
We report a novel method for selective laser energy delivery into biological tissues based on refractive-index differences. As a specific example, Ho:YAG laser energy is delivered into fat preferentially over other soft tissue, despite the fact that water has a higher absorption coefficient at this wavelength than fat.
doi:10.1364/ol.25.001104 pmid:18064285 fatcat:4z7zs7rkdjad5iisql6reawp7q