Implementation of double-pulse laser control in optical Kerr effect spectroscopy

16th International Youth Scientific School 'Actual Problems of Magnetic Resonance and its Applications'

Nikiforov, V.G.^1 ; Shmelev, A.G.^1 ; Safiullin, G.M.^1 ; Lobkov, V.S.^1 ; Samartsev, V.V.^1,2

Zavoisky Physical-Technical Institute, Sibirsky tract 10/7, 420029, Kazan, Russia^1

Kazan Federal University, Kremlyovskaya St. 18, 420008, Kazan, Russia^2

关键词: Double pulse laser;    Kerr effect spectroscopy;    Molecular response;    Non-resonant excitation;    Optically heterodyne-detected optical Kerr-Effect;    Pump-probe technique;    Recorded signals;    Relative intensity;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/478/1/012021/pdf
DOI  :  10.1088/1742-6596/478/1/012021

来源: IOP

【 摘 要 】

Two-pulse control of time-dependent anisotropy in liquid CCl4and CHCl3at room temperature is implemented using femtosecond polarisation spectroscopy. Non-resonant excitation was enhanced by means of the double-pulse pump-probe technique. It is shown that by varying the delay between the exciting pulses and their relative intensity, selection of contributions of individual intramolecular modes into the recorded signal is achieved. The molecular responses were detected using the time-resolved optically heterodyne-detected optical-Kerr-effect technique.