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| Diode-pumped self-starting mode-locked femtosecond Yb：YCa4O(BO3)3 laser |
| Gao Zi-Yea, Zhu Jiang-Fenga, Tian Wen-Longa, Wang Jun-Lia, Wang Qingb, Zhang Zhi-Guob, Wei Zhi-Yib, Yu Hao-Haic, Zhang Huai-Jinc, Wang Ji-Yangc |
a School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China;
b Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
c State Key Laboratory of Crystal Material and Institute for Crystal Material, Shandong University, Jinan 250100, China |
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Abstract A self-starting mode-locked femtosecond laser is accomplished with an oxoborate self-frequency doubling crystal Yb:YCa4O(BO3)3 (Yb:YCOB) as the gain medium and a semiconductor mirror as the saturable absorber. Pumped by a 976-nm fiber-coupled diode laser with 50-u m core diameter, stable mode-locked laser pulses up to 430 mW were obtained at a repetition rate of 83.61 MHz under 5-W pump power. The autocorrelation measurement shows that the pulse duration is as short as 150 fs by assuming the sech2 pulse shape at a central wavelength of 1048 nm. This work has demonstrated a compact and reliable femtosecond laser source for prospective low-cost applications.
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Received: 30 November 2013
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42.55.Rz
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(Doped-insulator lasers and other solid state lasers)
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42.55.Xi
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(Diode-pumped lasers)
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42.60.Fc
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(Modulation, tuning, and mode locking)
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| Fund:Project supported by the National Natural Science Foundation of China (Grant No. 61205130), the National Key Scientific Instruments Development Program of China (Grant No. 2012YQ120047), and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. K5051305008). |
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Corresponding Authors: Wei Zhi-Yi
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E-mail: zywei@aphy.iphy.ac.cn
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| About author:: 42.55.Rz; 42.55.Xi; 42.60.Fc |
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2014, Vol. 23 
