Mortazavi, Halleh Oakley, John P Barkat, Braham International Nuclear Information System (INIS) Mitigating the effect of optical back-scatter in multispectral underwater imaging The same concept applies to studies of other biomolecular interactions. Combining the superior beam-steering capability of the EODs, force acquisition via back-focal-plane interferometry, and dual high-speed FPGA-based feedback loops, we apply precise and constant loads to study the dynamics of interactions between actin and myosin. We demonstrate that beam steering with EODs improves the performance of our instrument. These aberrations caused instability in the force feedback loops leading to artifactual jumps in the trap position. We found that in our setup, AODs were unsuitable for beam steering due to non-linear variations in beam intensity and deflection angle as a function of driving frequency, likely caused by low-amplitude standing acoustic waves in the deflectors. When myosin binds to actin, the filament motion stops quickly as the total force from the optical traps is transferred to the actomyosin attachment. utilizes a bead-actin-bead dumbbell held in two force-clamped optical traps which apply a load to the dumbbell to move it at a constant velocity. The experimental setup, based on the concept of Capitanio et al. We give an example of the effects of these artifacts in our ultra-fast force clamp studies of the interaction of myosin with actin filaments. We characterized experimental artifacts arising from the non-linear response of acousto- optical deflectors (AODs) in an ultra-fast force-clamp optical trap and have shown that using electro- optical deflectors (EODs) instead eliminates these artifacts. Woody, Michael S Capitanio, Marco Ostap, E Michael Goldman, Yale E

This can represent a useful tool for controlling light-atom interfaces in quantum information processing.Įlectro- optic deflectors deliver advantages over acousto- optical deflectors in a high resolution, ultra-fast force-clamp optical trap. The shutter is realized through two beam displacing prisms and a longitudinal Pockels cell. It exhibits high (or low) transmittivity when turned on (or inactive), while the fidelity of the polarization state is high.

We present the realization of a ultra fast shutter for optical fields, which allows to preserve a generic polarization state, based on a self-stabilized interferometer. Spagnolo, Nicolo' Vitelli, Chiara Giacomini, Sandro Sciarrino, Fabio De Martini, Francesco

Polarization preserving ultra fast optical shutter for quantum information processing The scanner is an Ultra Fast Optical Sectioning scanner, which is able.

The data used in our work comes from a newly developed hand held 3D scanner. The remaining data are used for a smooth surface re- construction creating very plausible surfaces. Jensen, Rasmus RamsbÃ¸l Poel, Mike van der Larsen, RasmusĪ signal preserving ltering of the data set is done. Ultra Fast Optical Sectioning: Signal preserving filtering and surface reconstruction The advantages and limitations of using silicon nanowires for optical signal processing are revealed through experimental demonstrations of various optical. In this paper, we present recent research on silicon nanowires for ultra-fast and ultra-broadband optical signal processing at DTU Fotonik. Silicon nanowires for ultra-fast and ultrabroadband optical signal processing

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