Scattering and thermal lensing of 2.12- mum laser radiation in biological tissue.
Appl Opt
; 40(13): 2216-23, 2001 May 01.
Article
em En
| MEDLINE
| ID: mdl-18357230
ABSTRACT
We studied light propagation of holmiumYAG laser radiation (lambda = 2.12 mum) by measuring the two-dimensional laser beam profile before and after propagation through a tissue sample with a modified fast-temperature-measurement technique. The comparison between water and cartilage tissue allowed us to differentiate between beam broadening caused by formation of a thermal lens and broadening due to light scattering. In water, beam propagation is influenced by formation of thermal lensing, whereas in cartilage the broadening was caused by a combination of light scattering and thermal lensing. Additionally, we discovered that the observed effects are subject to dynamic changes during the laser-tissue interaction.
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01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
Appl Opt
Ano de publicação:
2001
Tipo de documento:
Article