Time-domain stabilization of carrier-envelope phase in femtosecond light pulses
Young-Jin Kim, Ian R. Coddington, William C. Swann, Nathan R. Newbury, Joohyung Lee, Seungchul Kim, Seung-Woo Kim
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.
, Coddington, I.
, Swann, W.
, Newbury, N.
, Lee, J.
, Kim, S.
and Kim, S.
Time-domain stabilization of carrier-envelope phase in femtosecond light pulses, Optics Express, [online], https://doi.org/10.1364/OE.22.011788, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=915618
(Accessed December 9, 2023)