ARF-EXCIMER LASER-INDUCED SECONDARY RADIATION IN PHOTOABLATION OF BIOLOGICAL TISSUE

Citation
H. Lubatschowski et al., ARF-EXCIMER LASER-INDUCED SECONDARY RADIATION IN PHOTOABLATION OF BIOLOGICAL TISSUE, Lasers in surgery and medicine, 14(2), 1994, pp. 168-177
Citations number
31
Categorie Soggetti
Medical Laboratory Technology",Surgery
ISSN journal
01968092
Volume
14
Issue
2
Year of publication
1994
Pages
168 - 177
Database
ISI
SICI code
0196-8092(1994)14:2<168:ALSRIP>2.0.ZU;2-T
Abstract
Secondary radiation, emitted during and after the irradiation of corne al, dermal, and dental tissue by an ArF-excimer laser (193 nm), was qu alitatively and quantitatively characterized. Emission of secondary ra diation was found in the range of 200-800 nm. The intensity of seconda ry radiation in the range of 200-315 nm (UVC and UVB) is approximately 20% of the total intensity at high laser fluences (>2 J/cm2) , and ap proximately 50% at moderate laser fluences (<500 mJ/cm2); 10 muJ/cm2 i n the UVC and UVB were measured at the sample surface, at fluences (<1 J/cm2) which are of relevance for clinical procedures on soft tissues . In dental tissue processing, very high fluences (>5 J/cm2) are requi red. As a consequence, laser-induced plasma formation can be observed. Secondary radiation can be used as a visible guide for selective remo val of carious altered tissue. The data we have found might be of assi stance in estimating potential hazards for future mutagenic studies in the field. (C) 1994 Wiley-Liss, Inc.