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		题名	作者	年代	出处	被引量
	1	Measurements of the concentration of organic solutions by femtosecond time-resolved ERE-CARS显示文摘A variant of all-resonant CARS named electronic-resonant enhancement CARS(ERE-CARS) is applied to measure the methanol-water solution concentration at room temperature.The measurements are performed using the ERE-CARS signal of the Raman vibrations near the C-H stretching modes(at 2835 and 2942 cm 1) in methanol.By changing the timing(t>0) of the laser pulses of this non-degenerate four wave mixing technique,the concentration information based on the vibrational dynamics of the C-H bonds can be successfully detected as the frequency-spread dephasing rate during the first few hundred fs in the ERE-CARS signal with high sensitivity and accuracy.Femtosecond time-resolved ERE-CARS technique is applied to the concentration analysis of a mixture of the organic solution.This investigation indicates that femtosecond time-resolved ERE-CARS technique might be a powerful tool for real-time detection for solution concentration of different liquids.	HE Ping WANG Ming WANG HuiLi FAN RongWei CHEN DeYing YU Xin WANG JiaLing JIANG YuGang	2012	Science China(Physics,Mechanics & Astronomy)2012，55，10：	0
	2	Terahertz beats of vibrational modes in methanol and ethanol selectively excited by tr-CARS technique显示文摘A recently developed time-resolved coherent anti-Stokes Raman scattering(tr-CARS) technique allows the measurement of vibrational coherences with high frequency differences with the ambient environment.The method is based on the short spatial extension of femtosecond pulses with a broadband tunable nonlinear optical parametric amplifier(NOPA) and an internal time delay between the probe and pump/Stokes pulse pair in the CARS process.The different beat frequencies between Raman modes can be selectively detected as oscillations in the tr-CARS transient signal with the broadband tunable NOPA.In this work,we aim at the Raman C-H stretching vibrations from 2800 cm 1 to 3000 cm 1,within which the different vibrational modes in both ethanol and methanol are selectively excited and simultaneously detected.The high time resolution of the experimental set-up allows one to monitor the vibrational coherence dynamics and to observe the quantum beat phenomena on a terahertz scale.This investigation indicates that the femtosecond tr-CARS technique is a powerful tool for the real-time monitoring and detection of molecular and biological agents,including airborne contaminants such as bacterial spores,viruses and their toxins.	HE Ping WANG HuiLi FAN RongWei CHEN DeYing XIA YuanQin YU Xin WANG JiaLing JIANG YuGang	2012	Science China(Physics,Mechanics & Astronomy)2012，55，12：	0

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