ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS |
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Effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier |
Song Rui (宋锐), Lei Cheng-Min (雷成敏), Chen Sheng-Ping (陈胜平), Wang Ze-Feng (王泽锋), Hou Jing (侯静) |
College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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Abstract The effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier is investigated theoretically and experimentally. The complex Ginzburg–Landau equation and adaptive split-step Fourier method are used to simulate the propagation of pulses with different pulse widths in the fiber amplifier, and the results show that a longer pulse is more profitable in near-infrared supercontinuum generation if the central wavelength of the input laser lies in the normal dispersion region of the gain fiber. A four-stage master oscillator power amplifier configuration is adopted and the output spectra under picosecond and nanosecond input pulses are compared with each other. The experimental results are in good accordance with the simulations which can provide some guidance for further optimization of the system.
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Received: 06 January 2015
Revised: 27 January 2015
Accepted manuscript online:
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PACS:
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42.55.Wd
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(Fiber lasers)
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42.65.Tg
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(Optical solitons; nonlinear guided waves)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11404404 and 11274385) and the Outstanding Youth Fund Project of Hunan Province and the Fund of Innovation of National University of Defense Technology, China (Grant No. B120701). |
Corresponding Authors:
Song Rui
E-mail: srnotice@163.com
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Cite this article:
Song Rui (宋锐), Lei Cheng-Min (雷成敏), Chen Sheng-Ping (陈胜平), Wang Ze-Feng (王泽锋), Hou Jing (侯静) Effect of pulse width on near-infrared supercontinuum generation in nonlinear fiber amplifier 2015 Chin. Phys. B 24 084207
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