Two-Photon Infrared Resonance Can Enhance Coherent Raman Scattering. Academic Article uri icon

abstract

  • In this Letter we present a new technique for attaining efficient low-background coherent Raman scattering where the Raman coherence is mediated by a tunable infrared laser in two-photon resonance with a chosen vibrational transition. In addition to the traditional benefits of conventional coherent Raman schemes, this approach offers a number of advantages including potentially higher emission intensity, reduction of nonresonant four-wave mixing background, preferential excitation of the anti-Stokes field, and simplified phase matching conditions. In particular, this is demonstrated in gaseous methane along the _{1} (A_{1}) and _{3} (T_{2}) vibrational levels using an infrared field tuned between 1400 and 1600cm^{-1} and a 532-nm pump field. This approach has broad applications, from coherent light generation to spectroscopic remote sensing and chemically specific imaging in microscopy.

published proceedings

  • Phys Rev Lett

altmetric score

  • 0.5

author list (cited authors)

  • Traverso, A. J., Hokr, B., Yi, Z., Yuan, L., Yamaguchi, S., Scully, M. O., & Yakovlev, V. V.

citation count

  • 20

complete list of authors

  • Traverso, Andrew J||Hokr, Brett||Yi, Zhenhuan||Yuan, Luqi||Yamaguchi, Shoichi||Scully, Marlan O||Yakovlev, Vladislav V

publication date

  • February 2018