Femtosecond pulse generation was pioneered four decades ago using mode-locked dye
lasers, which dominated the field for the following 20 years. Dye lasers were then replaced …

The rise time of intense radiation determines the maximum field strength atoms can be
exposed to before their polarizability dramatically drops due to the detachment of an outer …

Nonlinear responses to an optical field are universal in nature but have been difficult to
observe in the extreme ultraviolet (XUV) and soft X-ray regions owing to a lack of coherent …

Green power of 138 W was generated at an estimated beam quality of M^ 2= 11 by
intracavity frequency doubling of a diode-pumped Nd: YAG laser. The laser employs a …

By use of KBe_2BO_3F_2 (KBBF) crystal with a size of 10 mm× 10 mm× 1.2 mm and a
special prism-coupling technique (PCT), fourth-harmonic generation of Ti: sapphire laser …

We report on the direct observation of an attosecond pulse train with a mode-resolved
autocorrelation technique. The chirp among the three harmonic fields is specified by …

A three-stage, 1-kHz amplifier system delivering pulses shorter than 10 fs with a peak power
in excess of 0.3 TW is reported. Passive and active spectral intensity and phase control …

By using adaptive optics to correct the wave-front distortion of a 21-fs, 0.7-mJ, 1-kHz laser,
we are able to focus the pulses to a 1‐µm spot with an f/1 off-axis parabolic mirror. The peak …

We report on the development of an optical parametric chirpedpulse amplifier at a 1-kHz
repetition rate with a 5.5-fs pulse duration, a 2.7-mJ pulse energy and carrier-envelope …

We describe a Ti: sapphire-based laser–x-ray system specifically designed for generation of
ultrafast x-ray pulses in the tenths-of-nanometers spectral range at a 2-kHz repetition rate …