Results 21 to 30 of about 157,060 (311)
Frontiers in Physics, 2021 Self-mixing interference (SMI) in terahertz quantum cascade lasers (THz QCLs) is one of the significant approaches for coherent THz imaging and sensing techniques.
Lei Ge +8 more
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Distance Measurement with Harmonic Modulation of Self-Mixing Laser Wavelength at External Optical Feedback [PDF]
Известия Саратовского университета. Новая серия: Физика, 2020 Background and Objectives: Self-mixing interferometry of absolute distances is currently well represented by the method of frequency modulation of the laser diode supply current (FMCW). In recent years a harmonic modulation of the power current of a self-
Skripal, Anatoly Vladimirovich +4 more
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Photonics, 2023 We have established a novel method for quadrature signal construction in a semiconductor laser diode self-mixing interferometry system using two photodiodes and a beam splitter with a liquid crystal phase shifter (LCPS).
Yancheng Li +3 more
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Chemical Engineering Journal Advances, 2023 The horizontal self-cleaning single-shaft kneader possesses excellent mixing performance and has many industrial applications in bulk polymerization, polycondensation and polymer devolatilization.
Wenkai Cheng
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Photonics, 2023 This article proposes an improved wavelet threshold denoising for laser self-mixing interference signals. The improved wavelet threshold function exhibits smoothness and continuity near the threshold.
Hui Liu +6 more
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Summary of Active Mixing Enhancement Technology for Scramjet [PDF]
Hangkong bingqi, 2023 Fuel mixing and enhancement is the key technology of modern scramjet engine. In view of the problem of how to fully mix fuel, researchers have developed a variety of mixing enhancement technologies, which are mainly divided into active and passive types.
Wang Wenlong, Gai Zilin, Ma Cenrui, Wang Hongyu
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Frontiers in Physics, 2022 Recent studies have shown that packings of cells, both eukaryotic cellular tissues and growing or swarming bacterial colonies, can often be understood as active nematic fluids.
Fabian Jan Schwarzendahl +3 more
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Free surface aeration and development dependence in chute flows
Scientific Reports, 2022 The microscopic description of the mixture behaviour of air–water flow remains a challenge. It is not clear how to represent a complex two-phase interaction with the turbulent air–water structure development process. In this study, based on the air–water
Wangru Wei, Jun Deng
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Orthogonal frequency division multiplexing with amplitude shift keying subcarrier modulation as a reliable and efficient transmission scheme for self-mixing receivers [PDF]
Advances in Radio Science, 2017 A new receiving scheme for self-mixing receivers is presented that overcomes the disadvantages of the self-heterodyne concept. Generally speaking, the self-mixing receiver offers immunity to phase noise and frequency offsets, especially at very high ...
J. Kornprobst +2 more
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Detection of Self-Mixing Interferometric Fringes of a Laser Sensor Using Matched Filter
Proceedings, 2017 Self-Mixing (SM) is a promising technique for sensing vibration, distance, velocity etc. To retrieve accurate metric measurements from an acquired SM signal, it is necessary to correctly detect all interferometric fringes.
Muhammad Akmal +3 more
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