Efficient femtosecond Yb:YAG laser pumped by a single-mode laser diode |
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| Authors: | Antonio Agnesi Alessandro Greborio Federico Pirzio Giancarlo Reali |
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| Institution: | 1. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, Anhui Province, PR China;2. University of Science and Technology of China, Hefei 230026, PR China;3. University of Chinese Academy of Sciences, Beijing 100049, PR China;1. School of Information Science and Engineering, and Shandong Provincial Key Laboratory of Laser Technology and Application, Shandong University, Jinan 250100, China;2. State Key Laboratory of Transient Optics and Photonics, Xi’an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi’an 710119, China;3. School of Mathematics and Physics, Qingdao University of Science and Technology, Qingdao 266100, China;1. Solid State Laser Division, Raja Ramanna Centre for Advanced Technology, Indore 452013, India;2. Department of Physics & Meteorology, Indian Institute of Technology, Kharagpur 721302, India;1. Departamento de Óptica, Facultad de Ciencias Físicas, Universidad Complutense de Madrid, Avda. Complutense s/n, 28040 Madrid, Spain;2. Departamento de Física e Astronomia e IFIMUP-IN, Faculdade de Ciências, Universidade do Porto, R. do Campo Alegre 687, 4169-007 Porto, Portugal;1. Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China;2. School of Physical Science and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China;3. School of Electrical and Electronic Engineering, Nanyang Technological University, 639798 Singapore |
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| Abstract: | Single-mode diodes enable a particularly simple, compact and effective pumping of solid-state laser devices for many specialized applications. We investigated a single-mode, 300-mW laser diode for pumping at 935 nm a Yb:YAG laser passively mode-locked by a semiconductor saturable absorber. Relatively short pulse generation (156 fs), tunable across 1033–1059 nm has been demonstrated. An optical-to-optical efficiency of about 28% has been obtained with 320 fs long pulses. Therefore, contrarily to what previously believed, compact diode-pumped ultrafast Yb:YAG oscillators can reliably and efficiently deliver pulses in the range of ≈ 100–200 fs with few tens of mW, which are very appealing for bio-diagnostics and amplifier seeding applications. |
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