High-power noise-like pulse generation using a 1.56-μm all-fiber laser system

Shih Shian Lin, Sheng Kwang Hwang, Jia Ming Liu

研究成果: Article同行評審

8 引文 斯高帕斯(Scopus)

摘要

We demonstrated an all-fiber, high-power noise-like pulse laser system at the 1.56-μm wavelength. A low-power noise-like pulse train generated by a ring oscillator was amplified using a two-stage amplifier, where the performance of the second-stage amplifier determined the final output power level. The optical intensity in the second-stage amplifier was managed well to avoid not only the excessive spectral broadening induced by nonlinearities but also any damage to the device. On the other hand, the power conversion efficiency of the amplifier was optimized through proper control of its pump wavelength. The pump wavelength determines the pump absorption and therefore the power conversion efficiency of the gain fiber. Through this approach, the average power of the noise-like pulse train was amplified considerably to an output of 13.1 W, resulting in a power conversion efficiency of 36.1% and a pulse energy of 0.85 μJ. To the best of our knowledge, these amplified pulses have the highest average power and pulse energy for noise-like pulses in the 1.56-μm wavelength region. As a result, the net gain in the cascaded amplifier reached 30 dB. With peak and pedestal widths of 168 fs and 61.3 ps, respectively, for the amplified pulses, the pedestal-to-peak intensity ratio of the autocorrelation trace remains at the value of 0.5 required for truly noise-like pulses.

原文English
頁(從 - 到)18256-18268
頁數13
期刊Optics Express
23
發行號14
DOIs
出版狀態Published - 2015 七月 13

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics

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