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Publication Citation: Time-domain stabilization of carrier-envelope phase in femtosecond light pulses

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Author(s): Young-Jin Kim; Ian R. Coddington; William C. Swann; Nathan R. Newbury; Joohyung Lee; Seungchul Kim; Seung-Woo Kim;
Title: Time-domain stabilization of carrier-envelope phase in femtosecond light pulses
Published: May 07, 2014
Abstract: We report a time-domain method of stabilizing the carrier-envelope phase (CEP) of femtosecond pulses. Temporal variations of the pulse envelope and the carrier electric-field phase were separately detected with the aid of intensity cross-correlation and interferometric cross-correlation. These detected signals were used to stabilize the CEP; the resulting 50-fold improvement in the fractional stability of the carrier-envelop-offset frequency was evaluated as 1.2 × 10−11 at 0.1 second averaging periods and 1.7 × 10−9 at 80 seconds, corresponding to a carrier envelope phase noise of 75 microradians and 10 milliradians, respectively. This method can be realized with a low pulse energy of ~10 pJ and does not require subsequent power amplification or spectral broadening. The high efficiency and short-term stability of this method can facilitate the use of femtosecond lasers in the field of industrial surface measurements, telecommunications, and space sciences.
Citation: Optics Express
Volume: 22
Issue: 10
Pages: pp. 11788 - 11796
Keywords: frequency comb, carrier envelope offset phase
Research Areas: Critical Dimension and Overlay Metrology, Time and Frequency
DOI: http://dx.doi.org/10.1364/OE.22.011788  (Note: May link to a non-U.S. Government webpage)
PDF version: PDF Document Click here to retrieve PDF version of paper (2MB)