Results 31 to 40 of about 1,280,007 (347)

Deep phase modulation interferometry

open access: yesOptics Express, 2010
We have developed a method to equip homodyne interferometers with the capability to operate with constant high sensitivity over many fringes for continuous real-time tracking. The method can be considered as an extension of the "J_1...J_4" methods, and its enhancement to deliver very sensitive angular measurements through Differential Wavefront Sensing
Heinzel, G.   +5 more
openaire   +4 more sources

Directly Phase-Modulated Light Source [PDF]

open access: yesPhysical Review X, 2016
14 pages, 4 ...
Yuan, Z. L.   +5 more
openaire   +5 more sources

Spin-Selected Dual-Wavelength Plasmonic Metalenses

open access: yesNanomaterials, 2019
Several novel spin-selected dual-wavelength metalenses have been proposed and investigated based on the plasmonic metasurface consisting of two kinds of rotary rectangle gap nanoantennas (RGN), which are designed based on merging two or four polarity ...
Wei Wang   +4 more
doaj   +1 more source

Study of an electro-optic modulator capable of generating simultaneous amplitude and phase modulations [PDF]

open access: yes, 2003
We report on the analysis and prototype-characterization of a dual-electrode electro-optic modulator that can generate both amplitude and phase modulations with a selectable relative phase, termed a universally tunable modulator (UTM).
Bowen   +12 more
core   +2 more sources

Fitting Blazhko light curves

open access: yes, 2012
The correct amplitude and phase modulation formalism of the Blazhko modulation is given. The harmonic order dependent amplitude and phase modulation form is equivalent with the Fourier decomposition of multiplets.
Alcock   +26 more
core   +1 more source

EVALUATION METHOD FOR PARASITIC EFFECTS OF THE ELECTRO-OPTICAL MODULATOR IN A FIBER OPTIC GYROSCOPE [PDF]

open access: yesНаучно-технический вестник информационных технологий, механики и оптики, 2016
Subject of Research.The paper proposes an original method for studying the parasitic effects in the electro-optic modulator of the fiber optic gyroscope. Proposed method is based on the usage of a special waveform phase modulation signal. Method.
S. A. Volkovskiy   +4 more
doaj   +1 more source

Advances in nonlinear spectroscopy using phase modulated light fields: prospective applications in perturbative and non-perturbative regimes

open access: yesAdvances in Physics: X, 2022
Since its first implementation in 2006, in fluorescence detected Fourier transform excitation spectroscopy of rubidium atoms, phase modulation is being increasingly used in nonlinear spectroscopy.
Khadga J. Karki, Marcelo F. Ciappina
doaj   +1 more source

Low dose and fast grating-based x-ray phase-contrast imaging using the integrating-bucket phase modulation technique

open access: yes, 2017
X-ray phase-contrast imaging has experienced rapid development over the last few decades, and in this technology, the phase modulation strategy of phase-stepping is used most widely to measure the sample's phase signal.
Gao, Kun   +6 more
core   +1 more source

Dynamic Reflection Phase Modulation in Terahertz Metamaterial

open access: yesIEEE Photonics Journal, 2019
In order to provide the terahertz metamaterial with dynamic phase modulation capability, a new strategy is proposed. It consists of two different unit cells involving particularly designed metallic concentric circular split ring resonators, both of which
Zeng Yangjian   +4 more
doaj   +1 more source

A Comparative Study of Adaptive Interlimb Coordination Mechanisms for Self-Organized Robot Locomotion

open access: yesFrontiers in Robotics and AI, 2021
Walking animals demonstrate impressive self-organized locomotion and adaptation to body property changes by skillfully manipulating their complicated and redundant musculoskeletal systems.
Tao Sun   +6 more
doaj   +1 more source

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