Ultrafast all-optical solid-state framing camera with picosecond temporal resolution

Design an all-optical solid-state scanner chip, which can realize high speed light deflection in a very small space, instead of electron beam deflection scan image converter tube and opto-mechanical scanner, cancel the complicated mechanical components, use the all-optical scanning to realize the super fast phenomenon observation. The beam deflection system is based on semiconductor optical waveguide core layer carrier induced refractive index change effect to realize, its development work is mainly divided into semiconductor optical waveguide and saw prisms two parts. And through the experiment, we measured deflection angle of the scanner chip to 1053nm signal light.

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Electromagnetically Induced Transparency in Media with Rydberg Excitons 2: Cross-Kerr Modulation

Entropy ◽

10.3390/e22020160 ◽

2020 ◽

Vol 22 (2) ◽

pp. 160 ◽

Cited By ~ 1

Author(s):

David Ziemkiewicz ◽

Sylwia Zielińska - Raczyńska

Keyword(s):

Quantum Information ◽

Solid State ◽

Phase Shift ◽

Cuprous Oxide ◽

Quantum Information Processing ◽

Electromagnetically Induced Transparency ◽

Optimum Conditions ◽

Third Order ◽

All Optical ◽

Induced Transparency

By mapping photons into the sample of cuprous oxide with Rydberg excitons, it is possible to obtain a significant optical phase shift due to third-order cross-Kerr nonlinearities realized under the conditions of electromagnetically induced transparency. The optimum conditions for observation of the phase shift over π in Rydberg excitons media are examined. A discussion of the application of the cross-phase modulations in the field of all-optical quantum information processing in solid-state systems is presented.

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A Software Architecture to Mimic a Ventricular Tachycardia in Intact Murine Hearts by Means of an All-Optical Platform

Methods and Protocols ◽

10.3390/mps2010007 ◽

2019 ◽

Vol 2 (1) ◽

pp. 7 ◽

Cited By ~ 1

Author(s):

Francesco Giardini ◽

Valentina Biasci ◽

Marina Scardigli ◽

Francesco S. Pavone ◽

Gil Bub ◽

...

Keyword(s):

Ventricular Tachycardia ◽

Electrical Activity ◽

Real Time ◽

Temporal Resolution ◽

Technical Note ◽

High Temporal Resolution ◽

Excitable Cells ◽

New Approach ◽

Cardiac Electrical Activity ◽

All Optical

Optogenetics is an emerging method that uses light to manipulate electrical activity in excitable cells exploiting the interaction between light and light-sensitive depolarizing ion channels, such as channelrhodopsin-2 (ChR2). Initially used in the neuroscience, it has been adopted in cardiac research where the expression of ChR2 in cardiac preparations allows optical pacing, resynchronization and defibrillation. Recently, optogenetics has been leveraged to manipulate cardiac electrical activity in the intact heart in real-time. This new approach was applied to simulate a re-entrant circuit across the ventricle. In this technical note, we describe the development and the implementation of a new software package for real-time optogenetic intervention. The package consists of a single LabVIEW program that simultaneously captures images at very high frame rates and delivers precisely timed optogenetic stimuli based on the content of the images. The software implementation guarantees closed-loop optical manipulation at high temporal resolution by processing the raw data in workstation memory. We demonstrate that this strategy allows the simulation of a ventricular tachycardia with high stability and with a negligible loss of data with a temporal resolution of up to 1 ms.

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