Carrier-envelope phase-stabilized amplifier system

✍ Scribed by J. Rauschenberger; T. Fuji; M. Hentschel; A.-J. Verhoef; T. Udem; C. Gohle; T. W. Hänsch; F. Krausz

• Publisher: John Wiley and Sons
• Year: 2006
• Tongue: English
• Weight: 278 KB
• Volume: 3
• Category: Article
• ISSN: 1612-2011
• DOI: 10.1002/lapl.200510053

✦ Synopsis

We demonstrate a novel scheme for carrier-envelope (CE)
phase stabilization of few-cycle laser pulses from a mode-locked
oscillator. Our scheme utilizes a monolithic, collinear geometry
which obviates the need for splitting the laser output, where a
fraction is used for CE-phase control and the remainder used for
experiment. Rather than using a microstructured fiber and
frequency-doubling crystal to generate the beating signal needed
for CE-phase locking, in our scheme self-phase modulation and
difference-frequency generation occur simultaneously in a single
periodically poled lithium niobate (PPLN) crystal and are used to
generate equivalent signals. Direct phase-locking and
recompression of the output is enabled because the PPLN crystal
transmits the majority of the incident fundamental relatively
unaffected. As a result, the output provides few-cycle pulses with
an unprecedented degree of short- and long-term reproducibility of
the electric field waveform. These unique features, along with the
simplicity of the scheme make it perfectly suitable for use in
seeding CE-phase stabilized amplified laser systems. Results from
a 3 kHz amplified Ti:sapphire system will be presented that
validate our assertions.