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首页> 外文期刊>Optics Letters >Wavelength-tunable ultrashort-pulse output of a photonic-crystal fiber designed to resolve ultrafast molecular dynamics
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Wavelength-tunable ultrashort-pulse output of a photonic-crystal fiber designed to resolve ultrafast molecular dynamics

机译:光子晶体光纤的波长可调超短脉冲输出,旨在解决超快分子动力学问题

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摘要

Wavelength-tunable 100 fs pulses generated through the soliton self-frequency shift in a photonic-crystal fiber are employed to visualize femtosecond coherence and population relaxation dynamics in molecular aggregates by means of time-resolved sum-frequency generation. This technique reveals an ultrafast dephasing of coherent molecular excitations with a phase relaxation time of about 120 fs and resolves an ultrafast switching of the nonlinear-optical response of molecular aggregates.
机译:通过在光子晶体光纤中通过孤子自频移动产生的波长可调的100 fs脉冲,通过时间分辨和频的产生,可视化飞秒相干和分子聚集体中的种群弛豫动力学。该技术揭示了相干分子激发的超快速相移,其相弛豫时间约为120 fs,并解决了分子聚集体的非线性光学响应的​​超快速切换。

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