Results 51 to 60 of about 3,266 (205)

SELF-MIXING LASER VIBROMETER WITH RESOLUTION IN THE MICRO AND NANO METERS SCALE

Anales (Asociación Física Argentina), 2021
We present the development of an interferometer capable of making contactless measurements of vibrations. The results show the we achieve micro- and/or nano-metric measurements without the stabilization of the laser.
L. E. Filgueira, C. T. Schmiegelow
doaj   +1 more source

Measurements of the linewidth enhancement factor of mid-infrared quantum cascade lasers by different optical feedback techniques

AIP Advances, 2016
Precise knowledge of the linewidth enhancement factor of a semiconductor laser under actual operating conditions is of prime importance since this parameter dictates various phenomena such as linewidth broadening or optical nonlinearities enhancement ...
L. Jumpertz, F. Michel, R. Pawlus, W. Elsässer, K. Schires, M. Carras, F. Grillot   +6 more
doaj   +1 more source

Optical Feedback Interferometry Flowmetry Sensor in Microfluidics Chip

Proceedings, 2017
Optical feedback interferometry (OFI) applied to microscale flow sensing is studied theoretically and experimentally. A new model is investigated that predicts the OFI signal.
Yu Zhao, Julien Perchoux, Thierry Camps, Véronique Bardinal   +3 more
doaj   +1 more source

Designing an Automatic Frequency Stabilization System for an External Cavity Diode Laser Using a Data Acquisition Card in the LabVIEW Platform

Applied Sciences, 2023
The frequency stability of free-running lasers is susceptible to the influence of environmental factors, which cannot meet the long-term frequency stabilization requirements for atom interferometry precision measurements. To obtain a frequency-stabilized
Yueyang Wu, Fangjun Qin, Yang Li, Zhichao Ding, Rui Xu   +4 more
doaj   +1 more source

Scanless and Detectorless Imaging by Optical Feedback Interferometry: a Proof of Principle

, 2020
Laser multi-wavelength detectorless reflection imaging based on absorption contrast is demonstrated by optical feedback interferometry, together with a novel scanless modality based on compressive sensing and structured ...
Alessandro Lupo, Maurizio Dabbicco, Paolo Sylos Labini, Dabbicco, Maurizio, Lupo, Alessandro, Labini, Paolo Sylos   +5 more
core   +1 more source

Versatile Multimodality Imaging System Based on Detectorless and Scanless Optical Feedback Interferometry—A Retrospective Overview for A Prospective Vision

Sensors, 2020
In this retrospective compendium, we attempt to draw a “fil rouge” along fifteen years of our research in the field of optical feedback interferometry aimed at guiding the readers to the verge of new developments in the field.
Massimo Brambilla, Lorenzo Luigi Columbo, Maurizio Dabbicco, Francesco De Lucia, Francesco Paolo Mezzapesa, Gaetano Scamarcio   +5 more
doaj   +1 more source

Biolipid Film‐Fused Electrochemiluminescence for Multipurpose In Situ Bioassays

Advanced Science, EarlyView.
An ECL‐emissive, membrane‐interactive scaffold was fabricated, and facilely fused with natural and non‐native phospholipids into multifactorial mimicries of cytomembranes and vesicles for in vitro representative membrane‐process probing. Such a biointerface‐based, state‐sensitive ECL paradigm not only pinpointed proximal phenomena, including channeling
Jialiang Chen, Bin Li, Yingying Wang, Fulin Zhu, Wenxuan Yang, Xuanyu Fu, Tiantian Man, Qiuyue Wu, Kewei Ren, Shengyuan Deng   +9 more
wiley   +1 more source

Number-resolved preparation of mesoscopic atomic ensembles

New Journal of Physics, 2021
The analysis of entangled atomic ensembles and their application for interferometry beyond the standard quantum limit requires an accurate determination of the number of atoms.
A Hüper, C Pür, M Hetzel, J Geng, J Peise, I Kruse, M Kristensen, W Ertmer, J Arlt, C Klempt   +9 more
doaj   +1 more source

Guiding and Manipulating Light Fields in Microstructured Liquid Crystals

Advanced Physics Research, EarlyView.
This review summarizes recent advances in guided‐wave optics enabled by microstructured liquid crystal (LC) devices, covering their fundamental material properties, key degree of freedom for dynamic light field manipulations. The advances of linear guided‐wave optics, nonlinear‐optics with spatial optical solitons, and microlasers in LC‐based devices ...
Shan‐shan Chang, Yong‐shuai Li, Jin‐hui Chen   +2 more
wiley   +1 more source

Binary Amplitude Reflection Gratings for X-ray Shearing and Hartmann Wavefront Sensors

Sensors, 2021
New, high-coherent-flux X-ray beamlines at synchrotron and free-electron laser light sources rely on wavefront sensors to achieve and maintain optimal alignment under dynamic operating conditions. This includes feedback to adaptive X-ray optics.
Kenneth A. Goldberg, Antoine Wojdyla, Diane Bryant   +2 more
doaj   +1 more source