Open AccessImpact of high-frequency spectral phase modulation on the temporal profile of short optical pulses
Author(s) -
C. Dorrer,
J. Bromage
Publication year - 2008
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.16.003058
Subject(s) - optics , bandwidth limited pulse , chirp , self phase modulation , phase modulation , optical transfer function , dispersion (optics) , femtosecond pulse shaping , spectral density , phase (matter) , physics , pulse shaping , ultrashort pulse , pulse (music) , modulation (music) , frequency modulation , materials science , phase noise , nonlinear optics , laser , telecommunications , radio frequency , quantum mechanics , detector , computer science , acoustics
The impact of high-frequency spectral phase modulation on the temporal intensity of optical pulses is derived analytically and simulated in two different regimes. The temporal contrast of an optical pulse close to the Fourier-transform limit is degraded by a pedestal related to the power spectral density of the spectral phase modulation. When the optical pulse is highly chirped, its intensity modulation is directly related to the spectral phase variations with a transfer function depending on the second-order dispersion of the chirped pulse. The metrology of the spectral phase of an optical pulse using temporal-intensity measurements performed after chirping the pulse is studied. The effect of spatial averaging is also discussed.