ABLATION OF THE CORNEA AND SYNTHETIC-POLYMERS USING A UV (213 NM) SOLID-STATE LASER
ABLATION OF THE CORNEA AND SYNTHETIC-POLYMERS USING A UV (213 NM) SOLID-STATE LASER
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DOI：
10.1109/3.64366
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发表时间：
1990-12-01
影响因子：
2.5
通讯作者：
LIN, JT
中科院分区：
文献类型：
--
作者：
REN, QS;GAILITIS, RP;LIN, JT
在本文中，我们研究了使用 Q 开关 Nd: YAG 激光器产生的五次谐波产生的 213 nm 辐射对猪角膜和合成胶原的光消融。 具有特定角度切割功能的新型非线性晶体 β 硼酸钡 (BBO) 用于优化五次谐波生成 (213 nm)。 为了进行比较，上述材料也被 266 nm（四次谐波）激光辐射烧蚀。 光学和电子显微镜表明，213 nm 和 266 nm 辐射产生的损伤区域分别小于 1 和 15 μm。 我们的论文中证明的 193 nm 和 213 nm 之间的烧蚀相似性为开发基于固态激光技术的新型角膜雕刻系统提供了重大机遇，该系统将克服准分子激光相关的困难。
In this paper, we studied photoablation of the porcine cornea and synthetic collagen with 213 nm radiation generated by the fifth harmonic from a Q-switched Nd: YAG laser. The new nonlinear crystals, beta barium borate (BBO), with specific angle cutting were used to optimize the fifth harmonic generation (213 nm). For comparison purposes, the above materials were also ablated by 266 nm (fourth-harmonic) laser radiation. Light and electron microscopy demonstrated that the damage zone created by 213 and 266 nm radiation are < 1 and 15-mu-m, respectively. The ablation similarity between 193 and 213 nm demonstrated in our paper opens major opportunities for the development of a new corneal sculpting system based on solid-state laser technology which will overcome difficulties associated with excimer laser.