1/f-noise-free optical sensing with an integrated heterodyne interferometer
Sign Up to like & getrecommendations! Published in 2021 at "Nature Communications"
DOI: 10.1038/s41467-021-22271-4
Abstract: Optical evanescent sensors can non-invasively detect unlabeled nanoscale objects in real time with unprecedented sensitivity, enabling a variety of advances in fundamental physics and biological applications. However, the intrinsic low-frequency noise therein with an approximately… read more here.
Keywords: heterodyne interferometer; free optical; noise free; optical sensing ... See more keywords
The Next Generation Heterodyne Laser Interferometer in Joule Balance
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3276013
Abstract: In the joule balance, it is important to measure the relative displacement between the exciting magnet and the suspended coil. So, we have designed and applied a compact dual-axis heterodyne interferometer, which is vacuum compatible… read more here.
Keywords: joule balance; interferometer; heterodyne interferometer;
Influence of the frequency response of the photodetector on the heterodyne interferometer-based sound pressure standards in water.
Sign Up to like & getrecommendations! Published in 2018 at "Applied optics"
DOI: 10.1364/ao.57.009635
Abstract: The heterodyne interferometer has been used to realize the sound pressure unit directly and absolutely for underwater acoustics and ultrasound, which is considered as the primary standard of the hydrophone calibration instead of the reciprocity… read more here.
Keywords: heterodyne interferometer; sound pressure; pressure; frequency response ... See more keywords
Iterative compensation of nonlinear error of heterodyne interferometer.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.004470
Abstract: In order to compensate the nonlinear error of a heterodyne interferometer caused by both frequency mixing and phase demodulating electronics in real time, a novel iterative algorithm with a digital lock-in phase demodulator is proposed… read more here.
Keywords: error; heterodyne interferometer; nonlinear error; error heterodyne ... See more keywords
Simple heterodyne interferometer using a polarizing beam displacer.
Sign Up to like & getrecommendations! Published in 2021 at "Optics letters"
DOI: 10.1364/ol.420759
Abstract: A novel, to the best of our knowledge, and simple heterodyne interferometer that uses spatially separated input beams to minimize the influence of the periodic nonlinearity is constructed. A custom designed polarizing beam displacer is… read more here.
Keywords: beam displacer; simple heterodyne; polarizing beam; heterodyne interferometer ... See more keywords