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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 21 — Oct. 10, 2011
  • pp: 20151–20158

Generation of high quality, 1.3 cycle pulses by active phase control of an octave spanning supercontinuum

Stefan Demmler, Jan Rothhardt, Alexander M. Heidt, Alexander Hartung, Erich G. Rohwer, Hartmut Bartelt, Jens Limpert, and Andreas Tünnermann  »View Author Affiliations


Optics Express, Vol. 19, Issue 21, pp. 20151-20158 (2011)
http://dx.doi.org/10.1364/OE.19.020151


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Abstract

Nonlinear pulse compression based on the generation of ultra-broadband supercontinuum (SC) in an all-normal dispersion photonic crystal fiber (ANDi PCF) is demonstrated. The highly coherent and smooth octave-spanning SC spectra are generated using 6 fs, 3 nJ pulses from a Ti:Sapphire oscillator for pumping a 13 mm piece of ANDi PCF. Applying active phase control has enabled the generation of 4.5 fs pulses. Additional spectral amplitude shaping has increased the bandwidth of the SC spectra further leading to nearly transform-limited pulses with a duration of 3.64 fs, which corresponds to only 1.3 optical cycles at a central wavelength of 810 nm. This is the shortest pulse duration achieved via compression of SC spectra generated in PCF to date. Due to the high stability and the smooth spectral intensity and phase distribution of the generated SC, an excellent temporal pulse quality exhibiting a pulse contrast of 14 dB with respect to the pre- and post-pulses is achieved.

© 2011 OSA

OCIS Codes
(320.0320) Ultrafast optics : Ultrafast optics
(320.5520) Ultrafast optics : Pulse compression
(320.5540) Ultrafast optics : Pulse shaping
(060.5295) Fiber optics and optical communications : Photonic crystal fibers
(320.6629) Ultrafast optics : Supercontinuum generation

ToC Category:
Ultrafast Optics

History
Original Manuscript: July 28, 2011
Revised Manuscript: August 25, 2011
Manuscript Accepted: August 25, 2011
Published: September 29, 2011

Citation
Stefan Demmler, Jan Rothhardt, Alexander M. Heidt, Alexander Hartung, Erich G. Rohwer, Hartmut Bartelt, Jens Limpert, and Andreas Tünnermann, "Generation of high quality, 1.3 cycle pulses by active phase control of an octave spanning supercontinuum," Opt. Express 19, 20151-20158 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-21-20151


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