title: Line-by-line control of 10-THz-frequency-spacing Raman sidebands.
abstract: We report line-by-line control of a coherent discrete spectrum (Raman sidebands) with a frequency spacing of 10.6 THz that is produced by an adiabatic Raman process. We show that the spectral phase of the Raman sidebands is finely controlled to the target (flat relative-spectral-phase). This is achieved by employing a combination of a spatial phase controller and a spectral interferometer, which are specifically designed for a high-power discrete spectrum. We also show that such spectral-phase control produces a train of Fourier transform limited pulses with an ultrahigh repetition rate of 10.6 THz in the time domain.
authors.affiliation: Department of Applied Physics and Chemistry, University of Electro-Communications, Chofu-Shi, Tokyo, Japan.
authors.forename: Kanaka Raju
authors.initials: KR
authors.lastname: Pandiri
authors.forename: Takayuki
authors.initials: T
authors.lastname: Suzuki
authors.forename: Akira
authors.initials: A
authors.lastname: Suda
authors.forename: Katsumi
authors.initials: K
authors.lastname: Midorikawa
authors.forename: Masayuki
authors.initials: M
authors.lastname: Katsuragawa
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D055096:Optical Devices; D012031:Refractometry / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013059:Spectrum Analysis, Raman / Q000295:instrumentation*; D013685:Telecommunications / Q000295:instrumentation*; D055053:Terahertz Radiation