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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 21, Iss. 2 — Feb. 1, 2004
  • pp: 458–462

Pulse compression of white-light continuum generated by induced phase modulation in a conventional glass fiber

Mikio Yamashita, Masakatsu Hirasawa, Naoya Nakagawa, Kazuki Yamamoto, Kazuhiko Oka, Ryuji Morita, and Akira Suguro  »View Author Affiliations


JOSA B, Vol. 21, Issue 2, pp. 458-462 (2004)
http://dx.doi.org/10.1364/JOSAB.21.000458


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Abstract

The 530–880-nm continuum pulse with a greatly asymmetric temporal profile over 500 fs and a spectral phase variation over 150 rad, which was generated by induced phase modulation (IPM) as well as self-phase modulation in a conventional fused-silica fiber, was compressed to 7.8 fs by a feedback technique. Fundamental (a center wavelength of 800 nm, a duration of 80 fs, a pulse energy of 64 nJ) and signal pulses (a center wavelength of 670 nm, a duration of 80 fs, a pulse energy of 65 nJ) produced by one common femtosecond source with an optical parametric amplifier were copropagated in the fiber under an optimum delay time between the two pulses. The computer-controlled feedback system that combines a 4-f phase compensator with a spatial light modulator and a modified spectral phase interferometry for a direct electric-field reconstruction, automatically compensated for not only the conventional nonlinear chirp (group-delay dispersion and its higher-order dispersion) but also the frequency-independent group-delay (first-order phase dispersion), both of which are essential for pulse compression by use of the IPM effect.

© 2004 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(060.7140) Fiber optics and optical communications : Ultrafast processes in fibers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(230.6120) Optical devices : Spatial light modulators
(320.5520) Ultrafast optics : Pulse compression
(320.7100) Ultrafast optics : Ultrafast measurements

Citation
Mikio Yamashita, Masakatsu Hirasawa, Naoya Nakagawa, Kazuki Yamamoto, Kazuhiko Oka, Ryuji Morita, and Akira Suguro, "Pulse compression of white-light continuum generated by induced phase modulation in a conventional glass fiber," J. Opt. Soc. Am. B 21, 458-462 (2004)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-21-2-458

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