ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Optical properties of ytterbium-doped tandem-pumped fiber oscillator |
Hao Jin-Ping (郝金坪)a b, Yan Ping (闫平)a, Xiao Qi-Rong (肖起榕)a, Li Dan (李丹)a, Gong Ma-Li (巩马理)a |
a Center for Photonics and Electronics, State Key Laboratory of Tribology, Department of Precision Instrument, Tsinghua University, Beijing 100084, China; b Science and Technology on Solid State Laser Laboratory, Beijing 100015, China |
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Abstract With the rapid development of ytterbium-doped fiber lasers, some obtrusive limitations on power scaling appeared. In order to avoid these problems, a scheme called tandem pumping is introduced into the fiber laser field. In this paper, the optical properties of an ytterbium-doped tandem-pumped fiber oscillator are presented. According to the oscillator profile, the proper gain fiber type and pump wavelength range are picked out, under the comprehensive consideration of laser conversion efficiency and beam quality. In addition, the photodarkening performances of tandem pumping lasers and conventional ones are compared based on practical application, with all possible impact parameters taken into account. Moreover, an all-fibered tandem-pumped oscillator centered at 1079.5 nm is built, in the way of clad pumping by a 1030-nm fiber laser. The laser power of the oscillator reaches 7 W, with an opto-optic efficiency of 82.4%.
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Received: 25 April 2013
Revised: 19 June 2013
Accepted manuscript online:
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PACS:
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42.55.-f
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(Lasers)
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42.55.Wd
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(Fiber lasers)
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42.81.-i
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(Fiber optics)
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42.60.-v
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(Laser optical systems: design and operation)
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Corresponding Authors:
Gong Ma-Li
E-mail: gongml@mail.tsinghua.edu.cn
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Cite this article:
Hao Jin-Ping (郝金坪), Yan Ping (闫平), Xiao Qi-Rong (肖起榕), Li Dan (李丹), Gong Ma-Li (巩马理) Optical properties of ytterbium-doped tandem-pumped fiber oscillator 2014 Chin. Phys. B 23 014203
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