title: High-order Raman sidebands generated from the near-infrared to ultraviolet region by four-wave Raman mixing of hydrogen using an ultrashort two-color pump beam.
abstract: A two-color pump beam consisting of a fundamental beam of a Ti:sapphire laser (35 fs, 802 nm) and a signal beam generated by optical parametric amplification (55 fs, 1203 nm) was utilized to generate multiple Raman sidebands by vibrational four-wave Raman mixing. The second harmonic emission (401 nm) was further employed as a seed beam for enhancing efficiency. Numerous sidebands emitting at 602, 481, 344, 301, 267, 241, 219, 200, and 185 nm were observed by irradiating the beam onto a screen coated with sodium salicylate. The spectral band width of these emission lines was capable of generating 0.9-fs optical pulses by Fourier synthesis.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Kyushu University, Motooka, Nishi-ku, Fukuoka, Japan. o-shitamichi@cstf.kyushu-u.ac.jp
authors.forename: Osamu
authors.initials: O
authors.lastname: Shitamichi
authors.forename: Totaro
authors.initials: T
authors.lastname: Imasaka
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D003116:Color; D004867:Equipment Design; D006859:Hydrogen / Q000737:chemistry*; D007259:Infrared Rays; D007834:Lasers; D008027:Light; D017711:Nonlinear Dynamics; D013059:Spectrum Analysis, Raman / Q000295:instrumentation* / Q000379:methods*; D014025:Titanium / Q000737:chemistry; D014466:Ultraviolet Rays
chemical_list: D006859:Hydrogen; D014025:Titanium; D000537:Aluminum Oxide