Spatiotemporal heterodyne detection [PDF]
Journal of the Optical Society of America A, 2007 We describe a scheme into which a camera is turned into an efficient tunable frequency filter of a few Hertz bandwidth in an off-axis, heterodyne optical mixing configuration, enabling to perform parallel, high-resolution coherent spectral imaging.
Atlan, Michael, Gross, Michel
core +4 more sources
Laser Heterodyne Detection Based on Photon Time–Domain Differential Detection Avoiding the Effect of Decoherence Phase Noise [PDF]
Sensors, 2023 Laser heterodyne detection (LHD) is a key velocimetry technique that provides better accuracy and sensitivity than direct laser detection. However, random phase noise can be introduced by the surface topography of the moving target undulation or ...
Ce Guan +3 more
doaj +2 more sources
Detrimental Effect Elimination of Laser Frequency Instability in Brillouin Optical Time Domain Reflectometer by Using Self-Heterodyne Detection [PDF]
Sensors, 2017 A useful method for eliminating the detrimental effect of laser frequency instability on Brillouin signals by employing the self-heterodyne detection of Rayleigh and Brillouin scattering is presented.
Yongqian Li +3 more
doaj +2 more sources
Two-mode heterodyne phase detection [PDF]
Physical Review A, 2001 We present an experimental scheme that achieves ideal phase detection on a two-mode field. The two modes $a$ and $b$ are the signal and image band modes of an heterodyne detector, with the field approaching an eigenstate of the photocurrent $\hat{Z}=a+b^{
A. Luis +7 more
core +6 more sources
Ultra-sensitive heterodyne detection at room temperature in the atmospheric windows [PDF]
NanophotonicsWe report room temperature heterodyne detection of a quantum cascade laser beaten with a local oscillator on a unipolar quantum photodetector in two different atmospheric windows, at 4.8 µm and 9 µm.
Saemian Mohammadreza +11 more
doaj +2 more sources
Germanium:gallium photoconductors for far infrared heterodyne detection [PDF]
Applied Optics, 1988 Highly compensated Ge:Ga photoconductors have been fabricated and evaluated for high bandwidth heterodyne detection.
Grossman, E. N. +3 more
core +3 more sources
Deep Learning-Based Min-Entropy-Accelerated Evaluation for High-Speed Quantum Random Number Generation [PDF]
EntropySecure communication is critically dependent on high-speed and high-security quantum random number generation (QRNG). In this work, we present a responsive approach to enhance the efficiency and security of QRNG by leveraging polarization-controlled ...
Xiaomin Guo +7 more
doaj +2 more sources
A Traceable Low-Frequency Attenuation Standard from 1 kHz to 10 MHz for Next-Generation Wireless and EMC Calibration [PDF]
SensorsThe growing demand for traceable, high-precision attenuation measurements in electromagnetic compatibility (EMC) testing and low-frequency wireless communication systems has driven the development of a primary attenuation standard covering 1 kHz to 10 ...
Anton Widarta
doaj +2 more sources
A novel scheme for processing FMCW-ladar data acquired with low sampling rate
Geo-spatial Information Science, 2022 The frequency-modulated continuous wave (FMCW) ladar is a useful sensor for remote sensing applications and has been widely used in both the military and civilian fields for precise geospatial data acquisition.
Sujuan Fang +4 more
doaj +1 more source
Applied System Innovation, 2021 Self-mixing optical coherent detection is a non-contact measurement technique which provides accurate information about the vibration frequency of any test subject.
Jyoti Gondane, Meena S. Panse
doaj +1 more source