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Proceedings Paper

Direct measurement of the spectral phase of femtosecond optical pulse
Author(s): Kai-Chien J. Chu; Jonathan Paul Heritage; R. S. Grant; Kowang Liu; Andrew Dienes; William E. White; Alan Sullivan
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Paper Abstract

In analogy to Young's double slit interference, the phase of the temporal beat between two oscillators with different frequencies is precisely the spectral phase difference between those oscillators. We present a technique that directly measures the spectral phase of femtosecond optical pulses using this double slit interference principle. A pair of narrow slits in a thin opaque sheet select two spectral frequencies from the femtosecond pulse spectrum in a zero dispersion pulse stretcher. Measurement of the temporal phase of a family of beat frequencies obtained over a range of slit spacings yields the desired spectral phase directly. We demonstrate this technique by accurately measuring the quadratic phase added to 80 femtosecond optical pulses by a 6.5 cm block of BK-7 glass.

Paper Details

Date Published: 10 April 1995
PDF: 8 pages
Proc. SPIE 2377, Generation, Amplification, and Measurement of Ultrashort Laser Pulses II, (10 April 1995); doi: 10.1117/12.206411
Show Author Affiliations
Kai-Chien J. Chu, Univ. of California/Davis (United States)
Jonathan Paul Heritage, Univ. of California/Davis (United States)
R. S. Grant, Univ. of California/Davis (United States)
Kowang Liu, Univ. of California/Davis (United States)
Andrew Dienes, Univ. of California/Davis (United States)
William E. White, Lawrence Livermore National Lab. (United States)
Alan Sullivan, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 2377:
Generation, Amplification, and Measurement of Ultrashort Laser Pulses II
Christopher P. P. Barty; Frank W. Wise, Editor(s)

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