Polarization gated high harmonic generation in argon gas was phase matched to produce a single or double pulses with
104 photons. It was accomplished by optimizing the argon gas pressure. The spectrum interference of the two pulses is
affected by the carrier-envelope phase like in Young's experiments. The XUV flux is sufficient for measuring the single
shot XUV spectrum in the 33eV-55eV photon energy range. The spectral profile was a super-continuum for some shots
and showed discrete high harmonics peaks for other shots. The carrier-envelope phase of pulses from grating-based
chirped pulse amplification was also varied smoothly to cover a 2π range by controlling the grating separation. It is
demonstrated that XUV spectra measures both the absolute value of the phase and the stability of the phase by
measuring the phase with an f-to-2f setup and by the variation of XUV spectra from polarization gated high harmonics
generation.
We demonstrated a significant improvement in the resolution of the x-ray streak camera by reducing the electron beam size in the deflection plates. This was accomplished by adding a slit in front of the focusing lens and the deflection plates. The temporal resolution reached 280 fs when the slit width was 5 mm. The camera was operated in an accumulative mode and tested by using a 25 fs laser with 2 kHz repetition rate and 1-2% RMS pulse energy stability. We conclude that deflection aberrations, which limit the resolution of the camera, can be appreciably reduced by eliminating the wide-angle electrons.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.