2020/08/18 by Maria F. Munoz, Adam Medina, Travis M. Autry +5 · 27 citations
Biochemistry, Genetics and Molecular Biology · Chemistry · Physics and Astronomy · #Coherent anti-Stokes Raman spectroscopy #Coherent spectroscopy #Computer science #Electronic engineering #Materials science #Optics #Optoelectronics #Phase (matter) #Phase modulation #Phase noise #Photosynthetic Processes and Mechanisms #Physics #Raman scattering #Raman spectroscopy #SIGNAL (programming language) #Sensitivity (control systems) #Spectroscopy #Spectroscopy and Laser Applications #Spectroscopy and Quantum Chemical Studies #physics.atom-ph #physics.optics
paper · pdf · doi:10.1364/ol.405196
published in Optics Letters 45(20), 5852 (Optica Publishing Group) · 4 pages, 3 figures, 1 table
arxiv created 2020/08/18 · openalex publication_date 2020/09/17 · arxiv updated 2020/10/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
As optical two-dimensional coherent spectroscopy (2DCS) is extended to a broader range of applications, it is critical to improve the detection sensitivity of optical 2DCS. We developed a fast phase-cycling scheme in a non-collinear optical 2DCS implementation by using liquid crystal phase retarders to modulate the phases of two excitation pulses. The background in the signal can be eliminated by combining either two or four interferograms measured with a proper phase configuration. The effectiveness of this method was validated in optical 2DCS measurements of an atomic vapor. This fast phase-cycling scheme will enable optical 2DCS in novel emerging applications that require enhanced detection sensitivity.