2014/03/15 by Takuro Ideguchi, Simon Holzner, Ideguchi, Takuro +11
Biochemistry, Genetics and Molecular Biology · Chemistry · Physics and Astronomy · #78-05 #Chemical Physics (physics.chem-ph) #FOS: Physical sciences #Optics (physics.optics) #Spectroscopy Techniques in Biomedical and Chemical Research #Spectroscopy and Chemometric Analyses #Spectroscopy and Quantum Chemical Studies #msc:78-05 #physics.chem-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1403.3814
7 pages, 4 figures
arxiv created 2014/03/15 · openalex publication_date 2014/03/15 · arxiv updated 2014/03/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We demonstrate a novel technique of coherent Raman spectroscopy with a femtosecond laser. We apply to a molecular sample a sequence of pairs of ultrashort excitation and probe pulses, with a linearly increasing time delay between the two pulses from one pair to the next. We measure, as a function of the delay, the intensity modulation in the signal resulting from the differential detection of the Stokes and anti-Stokes radiations generated at the sample. The Fourier transform of such time-domain signal reveals the spectrum of the excited vibrational Raman transitions. The experimental proof-of-principle demonstrates high resolution, broad spectral span and suppression of the non-resonant background, as well as sensitivity enhancement due to the differential detection.