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首页> 外文期刊>Optics Letters >Sub-two-cycle pulses by soliton self-compression in highly nonlinear photonic crystal fibers
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Sub-two-cycle pulses by soliton self-compression in highly nonlinear photonic crystal fibers

机译：高非线性光子晶体光纤中孤子自压缩的亚二周期脉冲

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摘要

We demonstrate the direct generation of sub-two-cycle pulses by soliton self-compression of femtosecond pulses from a Ti:sapphire laser at 85   MHz using a 4.85 - mm -long highly nonlinear photonic crystal fiber. Sub-nanojoule, 41   fs input pulses were compressed down to 4.6 fs without additional phase compensation schemes. To our knowledge, these are the shortest pulses obtained by soliton-effect compression of a laser oscillator. Efficient, near-dispersionless collimation of the fiber output was achieved with a simple lens and an octave-spanning double-chirped mirror pair. The full electric field of the compressed pulses was retrieved with a genetic algorithm applied to spectral and interferometric autocorrelation measurements, and the results are well described by numerical simulations.
机译：我们演示了通过使用4.85毫米长的高度非线性光子晶体光纤，以85 MHz的频率从Ti：蓝宝石激光器飞秒飞秒的孤子自压缩，直接产生亚两周期脉冲。亚纳焦级的41 fs输入脉冲在没有其他相位补偿方案的情况下被压缩至4.6 fs。据我们所知，这是通过激光振荡器的孤子效应压缩获得的最短脉冲。使用一个简单的透镜和一个倍频程的双chi反射镜对，可以实现光纤输出的高效，近乎无色散的准直。利用遗传算法检索了压缩脉冲的整个电场，该遗传算法用于频谱和干涉自相关测量，并且数值模拟很好地描述了结果。

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  • 来源
    《Optics Letters》 |2009年第24期|p.3851-3853|共3页
  • 作者

    A. A. Amorim12 M. V. Tognetti3 P. Oliveira1 J. L. Silva1 L. M. Bernardo1 F. X. Kärtner4 and H. M. Crespo1*;

  • 作者单位

    1IFIMUP and IN—Instituto de Física dos Materiais da Universidade do Porto, Instituto de Nanociências e Nanotecnologias, Departamento de Física, Faculdade de Ciências, Universidade do Porto, R. do Campo Alegre 687, 4169-007 Porto, Portugal 2Departamento de Física, Instituto Superior de Engenharia do Porto, R. de S. Tomé, 4200 Porto, Portugal 3Consorzio Nazionale Interuniversitario per le Scienze Fisiche della Materia, Unità di Siena, Dipartimento di Fisica, Università degli Studi di Siena, Via Roma 56, 53100 Siena, Italia 4Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA;

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