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Picosecond pulse of variable duration by phase matching frequency doubling crystal |
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| Authors: | Q S Pang G J Bi J H Li L Chang Y Zou X J Mao J J Wang G Li |
| Institution: | 1. Science and Technology on Solid-State Laser Laboratory, North China Research Institute of Electro-Optics, Beijing, 100015, China 2. CRYSTECH Inc., Electronic Information Industrial Park, Xianshan East Road, Chengyang District, Qingdao, 266107, China 3. Institute of Laser Engineering, Beijing University of Technology, Beijing, 100022, China |
| Abstract: | Report on a semiconductor saturable absorber mirror (SESAM) passively mode-locked picosecond Nd:YVO4 laser, with adjustable durations between 8.7 and 70 ps. The pulse duration was adjustable by varying the length of type II phase matching KTiOPO4 (KTP) crystal. Type II phase matched second harmonic interaction in combination with the anisotropic emission characteristic of Nd:YVO4 introduced additional bandwidth limiting through birefringent filtering. |
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