ERBIUM LASER ABLATION - THE EFFECT OF DYNAMIC OPTICAL-PROPERTIES

被引：59
作者：
CUMMINGS, JP
WALSH, JT
机构：
[1] Biomedical Engineering Department, Northwestern University, Evanston
来源：
APPLIED PHYSICS LETTERS | 1993年 / 62卷 / 16期
关键词：
D O I：
10.1063/1.109512
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Ablation characteristics of Q-switched Er:YAG (lambda = 2.94 mum) and Er:YSGG (lambda = 2.79 mum) lasers have been compared. For equivalent fluences per pulse, the Er:YAG laser radiation cuts deeper craters into a tissue phantom than the Er:YSGG laser radiation. The Er:YAG laser irradiation created lower plume velocities than Er:YSGG laser irradiation. The data have been interpreted in terms of a dynamically changing absorption coefficient model and suggest that, in contradistinction to low-intensity water absorption spectra, the effective absorption coefficient during ablation is greater at 2.79 than at 2.94 mum.
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页码：1988 / 1990
页数：3
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