Theoretical and experimental investigations of coherent phonon dynamics in sapphire crystal using femtosecond time-resolved coherent anti-Stokes Raman scattering

杜鑫,; 张明福,; 何兴,; 孟庆琨,; 宋云飞,; 杨延强,; 韩杰才,

doi:10.1088/1674-1056/20/12/126301

Cited by 4 publications

(2 citation statements)

References 25 publications

(13 reference statements)

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“…The third one produced a supercontinuum (SC) pulse as the Stokes pulse by passing an Al 2 O 3 crystal. [9] The SC pulse had an ultrabroadband spectral profile, ranging from 400 nm to 1100 nm. The pump pulse was controlled by an optical attenuator to adjust the pump pulse energy.…”

Section: Methodsmentioning

confidence: 99%

Structural deformation of nitro group of nitromethane molecule in liquid phase in an intense femtosecond laser field

Wang¹,

Wu²,

Song³

et al. 2017

Chinese Phys. B

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The structural deformation of NO 2 group induced by an intense femtosecond laser field of liquid nitromethane (NM) molecule is detected by time-and frequency-resolved coherent anti-Stokes Raman spectroscopy (CARS) technique with the intense pump laser. Here, we present the mechanism of molecular alignment and deformation. The CARS spectra and its FFT spectra of liquid NM show that the NO 2 torsional mode couples with the CN symmetric stretching mode and that the NO 2 group undergoes ultrafast structural deformation with a relaxation time of 195 fs. The frequency of the NO 2 torsional mode in liquid NM (50.8±0.3 cm −1 ) at room temperature is found. Our results prove the structural deformation of two groups in liquid NM molecule occur simultaneously in the intense laser field.

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Section: Methodsmentioning

confidence: 99%

Structural deformation of nitro group of nitromethane molecule in liquid phase in an intense femtosecond laser field

Wang¹,

Wu²,

Song³

et al. 2017

Chinese Phys. B

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“…With femtosecond time- and frequency-resolved CARS (TFR-CARS) technique, the vibrational modes can be coherently excited. 8 The detection process consequently avoids the thermal population flow and will reflect the energy redistribution processes inside molecules.…”

Section: Introductionmentioning

confidence: 99%

Role of electron in intramolecular vibrational energy redistribution: a simulation of time- and frequency-resolved CARS spectrum

Wang

Liu

et al. 2019

RSC Adv.

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Investigation of vibrational characteristics in BBO crystals by femtosecond CARS

Xia

Zhao

Wang

et al. 2012

Optics & Laser Technology

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Theoretical and experimental investigations of coherent phonon dynamics in sapphire crystal using femtosecond time-resolved coherent anti-Stokes Raman scattering

Abstract: Du Xin( ) a)b) , Zhang Ming-Fu( ) c) , He Xing( ) a) , Meng Qing-Kun( ) a) , Song Yun-Fei( ) a) , Yang Yan-Qiang( ) a) † , and Han Jie-Cai( ) c)

Cited by 4 publications

References 25 publications

Structural deformation of nitro group of nitromethane molecule in liquid phase in an intense femtosecond laser field

Structural deformation of nitro group of nitromethane molecule in liquid phase in an intense femtosecond laser field

Role of electron in intramolecular vibrational energy redistribution: a simulation of time- and frequency-resolved CARS spectrum

Investigation of vibrational characteristics in BBO crystals by femtosecond CARS

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