Sintec Optronics Technology Pte Ltd（Sintec Pte达光电技术有限公司）.pdfVIP

Sintec Optronics Technology Pte Ltd 10 Bukit Batok Crescent #07-02 The Spire Singapore 658079 Tel: +65 Fax: +65 Nd:YAG Lasers The first demonstration of laser action by T. H. Maiman was achieved in 1960 using ruby (Cr3+:Al O ). 2 3 In 1960, L. F. Johnson and K. Nassau demonstrated the first solid-state neodymium laser, in which the neodymium ion was a dopant in calcium tungstate (CaWO4). Elias Snitzer demonstrated the first neodymium-glass laser at American Optical that same year. However, it took another three more years before today’s best choice of neodymium host for most commercial applications - yttrium aluminium garnet (YAG) - was demonstrated as a laser material by J. E. Geutic, H. M. Marcos, and L. G. Van Uitert. Solid-state lasers are now important candidates in laser applications, e.g. material processing, laser precision measurement, laser spectroscopy, laser medicine, and laser chemistry. Compared to other lasers, the solid-state lasers have the following advantages: (1) Various operation modes: The solid-state lasers can operate in CW, pulsed, Q-switched, and mode-locked modes to obtain high average power, high pulse repetition rate, high pulse energy, and high peak power. The average power of 4 kW has commercially been achieved with modular construction YAG lasers. The peak power of 1013 - 1014 W has also been obtained. (2) Wavelength diversity: More than 100 solid-state materials can produce laser beams. Most of these beams range in the visible and near infrared regions of t