Double Blind Ultrafast Pulse Characterization by Mixed Frequency Generation in a Gold Antenna,ACS Photonics

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Double Blind Ultrafast Pulse Characterization by Mixed Frequency Generation in a Gold Antenna
ACS Photonics ( IF 6.5 ) Pub Date : 2018-06-04 00:00:00 , DOI: 10.1021/acsphotonics.8b00387
Sylvain D. Gennaro ₁ , Yi Li ₁ , Stefan A. Maier _{1,

2} , Rupert F. Oulton ₁

Affiliation

Ultrafast pulse characterization requires the analysis of correlation functions generated by frequency mixing of optical pulses in a nonlinear medium. In this work, we use a gold optical nanoantenna to generate simultaneously Four Wave Mixing and Sum Frequency Generation across the tuning range of a Ti:Sapphire and Optical Parametric Oscillator (OPO) system. Since metal nanoparticles create remarkably strong nonlinear responses for their size without the need for phase matching, this allows us to simultaneously characterize the unknown OPO pulse and its pump pulse using a single spectrogram. The nonlinear mixing is efficient enough to retrieve pulses with energies in the picojoule range.

中文翻译：

金天线中混合频率产生的双盲超快脉冲表征

超快脉冲表征需要分析由非线性介质中光脉冲的频率混合产生的相关函数。在这项工作中，我们使用黄金光学纳米天线在Ti：Sapphire和光学参量振荡器（OPO）系统的调谐范围内同时生成四波混频和总和频率生成。由于金属纳米粒子无需改变相位即可产生非常强的非线性响应，因此我们可以使用单个频谱图同时表征未知的OPO脉冲及其泵浦脉冲。非线性混合的效率足以恢复能量在皮焦耳范围内的脉冲。

更新日期：2018-06-04

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