Optimization of ultrashort-pulse squeezing by spectral filtering with pulse-shaping technique

Fumihiko Kannari, K. Ohno, H. Furumochi, M. Nakazawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The paper reports on the experimental demonstration of the photon number squeezing improvement by controlling the input spectral phase of ultrashort pulses to optical fibers. Schematic of experimental setup is described. Improvement of squeezing levels is observed even at a normal dispersion regime of a standard quartz fiber. However, spatio temporal coupling at the 4 f pulse shaper spatially shifts the spectral components that are shaped with a steep phase graduation at the spectral mask. Thus, the optical coupling at the fiber input is degraded for those spectral components. This spatio temporal coupling effect is analyzed with a numerical model and the influence on the scheme is discussed. Experimental results at an anomalous dispersion regime with 1.55 μm light source or with a photonic crystal fiber are also presented.

Original languageEnglish
Title of host publication2003 European Quantum Electronics Conference, EQEC 2003
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages1
ISBN (Print)0780377338, 9780780377332
Publication statusPublished - 2003
Externally publishedYes
EventEuropean Quantum Electronics Conference, EQEC 2003 - Munich, Germany
Duration: 2003 Jun 222003 Jun 27


OtherEuropean Quantum Electronics Conference, EQEC 2003

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics


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