We demonstrate and discuss a simple scheme that significantly enhances the detectivity of THz electro-optical sampling by introducing a sequence of Brewster windows that increases the ellipticity of the probe beam. By varying the window material or the number of Brewster windows, the enhancement factor can be adjusted; we demonstrate an enhancement factor of ≈20 with four ZnSe Brewster windows....

Construction of crystalline homo/heteroaggregation at micro/nanometer level from organic ?-conjugated systems is great importance because the controllable morphologies (i.e., size, shape, and dimension) could provide diverse optoelectronic properties for different applications in electrooptical devices. In this review, we summarize our recent progress self-assembly micro/nanostructures molecule...

Fibers embedded in soft matrices are widely encountered biological systems, with the fibers providing mechanical reinforcement or encoding of instructions for shape changes. Here, coupling end-attached polymeric nanofiber forests and liquid crystals (LCs) is explored, where nanofibers templated into prescribed shapes by chemical vapor polymerization paracyclophane-based monomers supported films...

A new technique for direct-writing of polymer nanostructures on insulating and semiconducting surfaces based on Electrochemical Dip-Pen Nanolithography (E-DPN) is described. The technique is based on electrochemical polymerization of monomers directly underneath the AFM tip. Sub-50 nm poly-3,4-ethylenedioxythiophene lines can be easily created. Such capability to direct-write and pattern polyme...

The conditions for THz radiation generation caused by electron transite time resonance in momentum and real spaces under low-temperature opticalphonon emission are analyzed. It is shown that such a phenomenon provides a unique possibility to realize the sub-THz and THz radiation generation at the border of the electrooptical and electronic techniques by using both the approaches: (i) amplificat...

Two extended cavity laser diodes are phase-locked, thanks to an intra-cavity electrooptical modulator. The phase-locked loop bandwidth is on the order of 10 MHz, which is about twice larger than when the feedback correction is applied on the laser current. The phase noise reaches -120 dBrad/Hz at 10 kHz. This new scheme reduces the residual laser phase noise, which constitutes one of the domina...