Linear techniques of phase measurement by femtosecond spectral interferometry for applications in spectroscopy

  • Lepetit L
  • Chériaux G
  • Joffre M
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Although nonlinear methods can provide only the amplitude and the
phase of an isolated ultrashort pulse, Linear techniques can yield
such measurements with a much better sensitivity and reliability
when a reference pulse is available. We demonstrate two such methods,
dual-quadrature spectral interferometry and Fourier-transform spectral
interferometry. These techniques are simple to implement, very sensitive,
and provide a complete measurement of the complex electric field,
E(omega), as a continuous function of frequency. (C) 1995 Optical
Society of America

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  • L. Lepetit

  • G. Chériaux

  • M. Joffre

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