Nonlinear Raman Techniques in Femtosecond Time Resolved Spectroscopy for the Analysis and Control of Molecular Dynamics

Materny, Arnulf; Konradi, Jakow; Namboodiri, Vinu; Namboodiri, Mahesh; Scaria, Abraham
November 2008
AIP Conference Proceedings;11/14/2008, Vol. 1075 Issue 1, p43
Academic Journal
The use of four-wave mixing techniques in femtosecond time-resolved spectroscopy has considerable advantages. Due to the many degrees of freedom offered e.g. by coherent anti-Stokes Raman scattering (CARS), the dynamics even of complex systems can be analyzed in detail. Using pulse shaping techniques in combination with a self-learning loop approach, molecular mode excitation can be controlled very efficiently in a multi-photon excitation process. Results obtained from the optimal control of CARS on β-carotene are discussed.


Related Articles

  • Mode Selective Excitation Using Coherent Control Spectroscopy. Singh, Ajay K.; Konradi, Jakow; Sarkar, Sisir K.; Materny, Arnulf // AIP Conference Proceedings;11/14/2008, Vol. 1075 Issue 1, p64 

    Femtosecond time-resolved coherent anti-Stokes Raman scattering (fs-CARS) gives access to ultrafast molecular dynamics. However, femtosecond laser pulses are spectrally broad and therefore coherently excite several molecular modes. While the temporal resolution is high, usually no mode-selective...

  • Evolution of a super-broadened spectrum in a filament generated by an ultrashort intense laser pulse in fused silica. Fang, X.-J.; Kobayashi, T. // Applied Physics B: Lasers & Optics;Sep2003, Vol. 77 Issue 2/3, p167 

    Reports an experimental and theoretical investigations of the evolution of super-broadened spectrum generation by intense 50-femtosecond pulses propagating in bulk fused silica. Agreement between the experimental results and numerical simulations; Proposal for supercontinuum generation;...

  • Design of UV laser pulses for the preparation of matrix isolated homonuclear diatomic molecules in selective vibrational superposition states. Korolkov, M. V.; Manz, J. // Journal of Chemical Physics;5/7/2007, Vol. 126 Issue 17, p174306 

    The preparation of matrix isolated homonuclear diatomic molecules in a vibrational superposition state c0·[uppercase_phi_synonym]e=1,v=0+cj·[uppercase_phi_synonym]e=1,v=j, with large (|c0|2≈1) plus small contributions (|cj|2<1) of the ground v=0 and specific v=j low excited...

  • Characterization of transient molecular vibration excited with shaped femtosecond pulses. Konorov, Stanislav O.; Xu, Xiaoji G.; Hepburn, John W.; Milner, Valery // Journal of Chemical Physics;6/21/2009, Vol. 130 Issue 23, p234505 

    We study vibrational dynamics of molecules interacting with spectrally shaped broadband laser pulses. After performing a single measurement based on cross-correlation frequency resolved optical gating of molecular vibration, complete evolution of the complex-valued quantum coherence between the...

  • Limiting Temporal and Spectral Resolution in Spectroscopy and Microscopy of Coherent Raman Scattering with Chirped Ultrashort Laser Pulses. Zheltikov, A. M. // Journal of Experimental & Theoretical Physics;May2005, Vol. 100 Issue 5, p833 

    Chirped ultrashort light pulses offer new options for coherent nonlinear spectroscopy and microscopy. We show here that the temporal resolution of spectroscopy and microscopy based on coherent anti-Stokes Raman scattering (CARS) can be smoothly tuned within a broad range, with upper and lower...

  • Complete characterization of molecular vibration using frequency resolved gating. Xu, Xiaoji G.; Konorov, Stanislav O.; Zhdanovich, Sergey; Hepburn, John W.; Milner, Valery // Journal of Chemical Physics;3/7/2007, Vol. 126 Issue 9, p091102 

    The authors propose a new approach to vibration spectroscopy based on the coherent anti-Stokes Raman scattering of broadband ultrashort laser pulses. The proposed method reveals both the amplitude and the phase of molecular vibrations by utilizing the cross-correlation frequency resolved optical...

  • A SCANNER CLEARLY. MONE, GREGORY // Discover;Jul/Aug2012, Vol. 33 Issue 6, p32 

    In this article, an imaging device for determining the chemical composition of materials in a nondestructive way is introduced. The device is called Insight100 and utilizes Raman spectroscopy to differentiate bottles of explosive liquids from liquid soap, or cancerous cell from healthy ones with...

  • Laser Induced Breakdown Spectroscopy of Prickly Pear's Spines and Glochids: A qualitative analysis. Flores, T.; Ponce, L.; Bilmes, G.; Arronte, A.; Alvira, F. // AIP Conference Proceedings;4/15/2008, Vol. 992 Issue 1, p1274 

    A qualitative LIBS analysis of Prickly Pear is presented. The spectra for Q:Switch regime from cladode and spine are similar, while shows an intense electronic noise due the high absorption in spines for free-running regime.

  • Study of the dynamics of surface molecules by time-resolved sum-frequency generation spectroscopy. Kubota, Jun; Domen, Kazunari // Analytical & Bioanalytical Chemistry;May2007, Vol. 388 Issue 1, p17 

    Sum-frequency generation (SFG) is a nonlinear laser-spectroscopy technique suitable for analysis of adsorbed molecules. The sub-monolayer sensitivity of SFG spectroscopy enables vibrational spectra to be obtained with high specificity for a variety of molecules on a range of surfaces, including...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics