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arXiv 1208.4155physics.optics
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在锥形硫系光纤中产生3 μm倍频程超连续谱

Mid-infrared supercontinuum generation in tapered chalcogenide fiber for producing octave-spanning frequency comb around 3 μm

Alireza Marandi, Charles W. Rudy, Victor G. Plotnichenko, Evgeny M. Dianov, Konstantin L. Vodopyanov, Robert L. Byer

摘要:

我们展示了中红外(mid-IR)超连续谱产生(SCG),其瞬时带宽为2.2至5 μm,低于峰值40 dB,覆盖了分子光谱学和许多其他应用所需的波长范围。SCG发生在一个锥形的As 2S 3光纤制备的原位拉锥和飞秒脉冲泵浦的锁模掺铒光纤激光器的次谐波。窄线宽干涉。激光验证了近红外频率梳的相干特性通过这些级联的非线性过程得到了保留。利用这种方法,稳定的宽中红外频率梳可以从商业上可获得的近红外频率梳导出,而无需额外的稳定机制。

英文摘要:

We demonstrate mid-infrared (mid-IR) supercontinuum generation (SCG) with instantaneous bandwidth from 2.2 to 5 μm at 40 dB below the peak, covering the wavelength range desirable for molecular spectroscopy and numerous other applications. The SCG occurs in a tapered As2S3 fiber prepared by in-situ tapering and is pumped by femtosecond pulses from the subharmonic of a mode-locked Er-doped fiber laser. Interference with a narrow linewidth c.w. laser verifies that the coherence properties of the near-IR frequency comb have been preserved through these cascaded nonlinear processes. With this approach stable broad mid-IR frequency combs can be derived from commercially available near-IR frequency combs without an extra stabilization mechanism.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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