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We determine the relative phase between bulk and surface contributions to second-harmonic generation (SHG) from Si(001) by exploiting the difference between right- and left-handed q-polarization, and by frequency-domain interferometric SHG.
A dramatic enhancement of harmonics and the extension of cutoff were observed in a linearly polarized two-color laser field below 10 nm. The intense soft X-ray supercontinuum provides an alternative for the attosecond generation.
Polarization gated high harmonic generation was phase matched to produce 104 XUV photons per shot. This allowed us to observe the dependence of the XUV supercontinuum on the carrier envelope phase of the laser pulses.
23 W, single-mode linearly-polarized 0.4 nm linewidth CW generation is achieved in a polarization-maintaining fiber Raman cavity pumped by a linearly-polarized Ytterbium fiber laser and applied to 3 W 589 nm second harmonic generation in MgO-PPLN.
A picosecond single-mode, linearly polarized fiber source producing 176 W of average power was employed to generate up to 80 W average power at 530 nm by frequency doubling through a single LBO crystal.
Two experimental geometries are introduced to selectively image transverse and longitudinal components of the optical near-field in plasmonic nanostructures. Our experimental results are in excellent agreement with theoretical predictions.
We demonstrate coherent superposition of quadrupolar two-beam SHG from two glass slides with variable spacing, a step toward quasi-phase matched SHG from isotropic materials.
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