We show that focusing a laser light onto the boundary between antiparallel ferroelectric
domains leads to the non-collinear generation of two second harmonic (SH) beams. The …

Ferroelectric domain engineering has wide applications in optical and electronic industries.
Compared with traditional electric field poling, femtosecond laser poling has many …

We report on filamentation and supercontinuum generation in polycrystalline ZnSe by
intense femtosecond laser pulses whose center wavelength is tunable in the 1.5–2.4 μm …

Nonlinear photonic crystals with 3D orthorhombic lattice structures were fabricated using the
femtosecond laser-poling technique in ferroelectric Sr0. 28Ba0. 72Nb2O6 (SBN) crystals …

We propose a scheme for efficient Cherenkov high-order harmonic generation. Second to
fifth order harmonic wave are observed in a single periodically poled ferroelectric crystal in …

We experimentally demonstrate multiple generations of high-order orbital angular
momentum (OAM) modes through third-harmonic generation in a 2D nonlinear photonic …

We report on experimental and theoretical studies of Čerenkov-type second-harmonic
generation in random nonlinear photonic structures with different two-dimensional …

We observe multiple simultaneous cascaded-χ (2) Čerenkov conical radiations in radially
poled nonlinear photonic crystals. By using two incident fundamental waves ω 1 and ω 2⁠, a …

We study theoretically and numerically the second harmonic generation in a nonlinear
crystal with random distribution of ferroelectric domains. We show that the specific features …

Radiation in the range 187. 5-215 nm was generated via random quasi-phase-matched
frequency doubling of femtosecond laser pulses in nonlinear photonic crystals of strontium …