Remote measurement of high preeruptive water vapor emissions at Sabancaya volcano by passive differential optical absorption spectroscopy
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Geophysical Research"
DOI: 10.1002/2017jb014020
Abstract: Water (H2O) is by far the most abundant volcanic volatile species and plays a predominant role in driving volcanic eruptions. However, numerous difficulties associated with making accurate measurements of water vapor in volcanic plumes have… read more here.
Keywords: water; differential optical; water vapor; spectroscopy ... See more keywords
A fast autofocus method based on virtual differential optical path in digital holography: Theory and applications
Sign Up to like & getrecommendations! Published in 2019 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2019.04.006
Abstract: Abstract Typical autofocusing approaches have been proposed for digital holography (DH) to ascertain the peaks or valleys of critical functions. However, the sensitivity near the peaks or valleys is very low, which increases the difficulty… read more here.
Keywords: method based; digital holography; optical path; virtual differential ... See more keywords
A Differential Optical Receiver With Monolithic Split-Microring Photodetector
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Journal of Solid-State Circuits"
DOI: 10.1109/jssc.2019.2917146
Abstract: This paper presents a high-sensitivity, fully differential (FD) optical receiver (RX) for high-density system-on-chip applications. The high digital activity prominent in such applications creates common-mode and power-supply noise, which degrades the optical RX sensitivity. To… read more here.
Keywords: split microring; microring photodetector; optical receiver; sensitivity ... See more keywords
Differential optical shadow sensor for sub-nanometer displacement measurement and its application to drag-free satellites.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.025201
Abstract: We present a method for 3D sub-nanometer displacement measurement using a set of differential optical shadow sensors. It is based on using pairs of collimated beams on opposite sides of an object that are partially… read more here.
Keywords: differential optical; displacement measurement; displacement; nanometer displacement ... See more keywords