It is shown theoretically that second harmonic generation can be quasi-phase-matched by
using a pump beam consisting of a forward propagating field and a counterpropagating …

We show, for the first time to our knowledge, that the fundamental beam that participates in
the process of third-harmonic generation experiences an additional high-order nonlinear …

We experimentally demonstrate simultaneous phase and group velocity locking of
fundamental and generated second harmonic pulses in Lithium Niobate, under conditions of …

We review recent experimental and theoretical work on the use of counterpropagating light
to enhance high-order harmonic generation through all-optical quasi-phase matching. Also …

Quasi-phase-matched high harmonic generation using trains of up to 8 counter-propagating
pulses is explored. For trains of up to 4 pulses the measured enhancement of the harmonic …

The influence of cross-phase modulation on third-harmonic generation is theoretically
studied. Generalized phase-matching conditions for third-harmonic generation including …

In this paper, we develop for the first time to our knowledge an analytical theory of second
harmonic generation (SHG) in a generic nonuniform χ^(2) medium. It is shown that by …

We present analytical and numerical calculations of the power and angular distributions of
high-order harmonics generated by limited laser beams in extended media with a dispersion …

We report on a quasi-collinear second harmonic generation experiment strongly influenced
by the intensities of the involved light beams. Considering the phase-modulation suffered by …

We extend all-optical quasi-phase matching of high-order harmonic generation into spectral
regions where conventional phase matching is not possible. The high laser intensities …