Nonlinear side effects of fs pulses inside corneal tissue during photodisruption

被引：65

作者：

Heisterkamp, A

Ripken, T

Mamom, T

Drommer, W

Welling, H

Ertmer, W

Lubatschowski, H

机构：

[1] Laser Zentrum Hannover EV, D-30419 Hannover, Germany

[2] Tierarztlichen Hsch Hannover, Inst Pathol, D-30559 Hannover, Germany

[3] Univ Hannover, Inst Quantenopt, D-30167 Hannover, Germany

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2002年 / 74卷 / 4-5期

关键词：

D O I：

10.1007/s003400200825

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In order to evaluate the potential for refractive surgery, fs laser pulses of 150-fs pulse duration were used to process corneal tissue of dead and living animal eyes. By focusing the laser radiation down to spot sizes of several microns, very precise cuts could be achieved inside the treated cornea, accompanied with minimum collateral damage to the tissue by thermal or mechanical effects. During histo-pathological analysis by light and transmission electron microscopy considerable side effects of fs photodisruption were found. Due to the high intensities at the focal region several nonlinear effects occurred. Self-focusing, photodissociation, UV-light production were observed, leading to streak formation inside the cornea.

引用

页码：419 / 425

页数：7

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