High-efficency stable 213-nm generation for LASIK application

Zhenglin Wang; Kamal Alameh; Rong Zheng

doi:10.1117/12.568979

28 January 2005 High-efficency stable 213-nm generation for LASIK application

Zhenglin Wang, Kamal Alameh, Rong Zheng

Proceedings Volume 5646, Nonlinear Optical Phenomena and Applications; (2005) https://doi.org/10.1117/12.568979
Event: Photonics Asia, 2004, Beijing, China

Abstract

213nm Solid-state laser technology provides an alternative method to replace toxic excimer laser in LASIK system. In this paper, we report a compact fifth harmonic generation system to generate high pulse energy 213nm laser from Q-switched Nd:YAG laser for LASIK application based on three stages harmonic generation procedures. A novel crystal housing was specifically designed to hold the three crystals with each crystal has independent, precise angular adjustment structure and automatic tuning control. The crystal temperature is well maintained at ~130°C to improve harmonic generation stability and crystal operation lifetime. An output pulse energy 35mJ is obtained at 213nm, corresponding to total conversion efficiency ~10% from 1064nm pump laser. In system verification tests, the 213nm output power drops less than 5% after 5 millions pulse shots and no significant damage appears in the crystals.

Citation Download Citation

Zhenglin Wang, Kamal Alameh, and Rong Zheng "High-efficency stable 213-nm generation for LASIK application", Proc. SPIE 5646, Nonlinear Optical Phenomena and Applications, (28 January 2005); https://doi.org/10.1117/12.568979

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