Near-infrared-to-vacuum-ultraviolet high-harmonic Raman and plasma emission spectroscopy with ultrashort mid-infrared laser pulses Academic Article uri icon

abstract

  • AbstractWe demonstrate a new modality of ultrafast laser spectroscopy based on highharmonicdriven stimulated Raman scattering (hiSRS) and incoherent laserplasma emission (iLPE). The spectra of highorder harmonics driven by sub100fs pulses in the midinfrared are shown to display wellresolved Ramangain, Ramanloss, and iLPE features, enabling a chemically specific, singlebeam, singleshot spectroscopy of gases and plasmas within a spectral range stretching from the nearinfrared to vacuum ultraviolet. We present a theoretical framework based on a suitably adapted nonlinear evolution equation that enables a closedform description of hiSRS as an ultrafast nonlinearoptical phenomenon. We show that the content of hiSRS as a physical process and as a method of spectroscopy goes well beyond standard SRS, offering a powerful resource for spectroscopy, remote sensing, and ultrafast optical science. Standing out as particularly relevant for nitrogencontaining gas systems, including atmospheric air, is a multimodal spectroscopic probe that combines ultrafast hiSRS via the second positive system of molecular nitrogen with iLPE via the band of nitrogen monoxide.

published proceedings

  • JOURNAL OF RAMAN SPECTROSCOPY

author list (cited authors)

  • Mitrofanov, A. V., Rozhko, M. V., Sidorov-Biryukov, D. A., Voronin, A. A., Fedotov, A. B., & Zheltikov, A. M.

citation count

  • 2

complete list of authors

  • Mitrofanov, Alexander V||Rozhko, Mikhail V||Sidorov-Biryukov, Dmitry A||Voronin, Alexander A||Fedotov, Andrei B||Zheltikov, Aleksei M

publication date

  • December 2021

publisher