Linear and Nonlinear Excitation of P3HT Induced by Spectral-Shaped Ultrafast Mid-IR Laser Radiation

Pflug Theo; Lungwitz Philipp; Olbrich Markus; Horn Alexander

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Linear and Nonlinear Excitation of P3HT Induced by Spectral-Shaped Ultrafast Mid-IR Laser Radiation

机译：光谱形超速中外红外激光辐射诱导P3HT的线性和非线性激发

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This article discusses the linear vibrational and nonlinear electronic excitation of the organic material P3HT during processing by ultrafast laser radiation in the mid-IR spectral range. Therefore, the center wavelength 3.4 mu m of the laser radiation is set equal to the resonance of the C-H stretching, and the ablation threshold fluence is determined depending on the pulse duration tau(H) and bandwidth Delta lambda of the laser radiation. Both parameters are varied, using a spectral pulse shaper. At tau(H) < 400 fs, the threshold fluence depends on the pulse duration, indicating nonlinear excitation, and remains constant at tau(H) > 400 fs, due to only linear vibrational excitation. A theoretical model based on the Keldysh formalism, considering the nonlinear photoionization, impact ionization, and linear absorption, supports the experimental results.

机译：本文在中红外光谱范围内通过超氮激光辐射处理过程中有机材料P3HT的线性振动和非线性电子激发。因此，激光辐射的中心波长3.4μm被设定得等于C-H拉伸的共振，并且根据激光辐射的脉冲持续时间Tau（H）和带宽Delta Lambda来确定消融阈值。使用光谱脉冲整形器，这两个参数都变化。在Tau（H）<400 fs，阈值流量取决于脉冲持续时间，指示非线性激发，并且由于仅是线性振动激发而在TAU（H）> 400 fs处保持恒定。基于Keldysh形式主义的理论模型，考虑非线性光相，冲击电离和线性吸收，支持实验结果。

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《The journal of physical chemistry, C. Nanomaterials and interfaces》 |2020年第25期|共9页
作者
Pflug Theo; Lungwitz Philipp; Olbrich Markus; Horn Alexander;
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Hsch Mittweida Laserinst Hsch Mittweida D-09648 Mittweida Germany;

Hsch Mittweida Laserinst Hsch Mittweida D-09648 Mittweida Germany;

Hsch Mittweida Laserinst Hsch Mittweida D-09648 Mittweida Germany;

Hsch Mittweida Laserinst Hsch Mittweida D-09648 Mittweida Germany;

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正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
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1. Linear and Nonlinear Excitation of P3HT Induced by Spectral-Shaped Ultrafast Mid-IR Laser Radiation [J] . Pflug Theo, Lungwitz Philipp, Olbrich Markus, The journal of physical chemistry, C. Nanomaterials and interfaces . 2020,第25期

机译：光谱形超速中外红外激光辐射诱导P3HT的线性和非线性激发
2. Linear and nonlinear excitation induced ultrafast absorption dynamics in laser ablated and chemically synthesized gold nanoparticle colloids [J] . Priyadarshini Mani, Adnan Mohammad, Prakash G. Vijaya Optical Materials . 2021,第Jula期

机译：激光烧蚀和化学合成金纳米粒子胶体的线性和非线性激发诱导超自速吸收动力学
3. Laser irradiation induced enhancement on the ultrafast third-order optical nonlinearity of chalcogenide glass [J] . Hong Xiang, Shufeng Wang, Zhenwei Wang, Optical Materials . 2006,第8a9期

机译：激光照射诱导提高硫族化物玻璃的超快三阶光学非线性
4. The role of surface plasmon polariton excitation in Laser Induced Periodic Structure formation after single-shot ultrafast irradiation of Au microstructures [C] . Murphy Ryan D., Torralva Ben, Adams David P., Conference on Lasers and Electro-Optics . 2013

机译：单次超快辐照金微结构后，表面等离子体激元激发在激光诱导的周期性结构形成中的作用
5. All solid-state mid-IR laser development, nonlinear absorption investigation and laser-induced damage study. [D] . Wagner, Torrey J. 2010

机译：所有固态中红外激光器的开发，非线性吸收研究和激光诱导的损伤研究。
6. Efficient ultrafast all-optical modulation in a nonlinear crystalline gallium phosphide nanodisk at the anapole excitation [O] . Gustavo Grinblat, Haizhong Zhang, Michael P. Nielsen, 2020

机译：在Anapole激发下在非线性结晶镓磷化镁敏感中高效超快全光调制
7. Surface Modifications of PMMA Induced by Controlled Electronic and Molecular Vibrational Excitation applying Ultrafast Mid-IR Laser Radiation [O] . -1

机译：受控电子和分子振动激发诱导的PMMA的表面修饰，应用超快中外红外激光辐射

Linear and Nonlinear Excitation of P3HT Induced by Spectral-Shaped Ultrafast Mid-IR Laser Radiation

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