Results 61 to 70 of about 131,066 (169)
Toward Low‐Power Laser Refrigeration ‐ Cooling a Resonant WGM Crystalline Cavity
Laser &Photonics Reviews, EarlyView.Laser refrigeration offers a method to cool solids to low temperatures by using only light. By illuminating bulk crystals doped with rare‐earth ions one can engineer the emitted fluorescent light to be at shorter wavelengths than the pump light ‐ thus extracting heat/phonons from the solid and cooling the crystals.
Jinjin Du +6 more
wiley +1 more source
Modelling of Fabry-perot interferometer / Adibah Mohammad Nor [PDF]
, 2012 Interferometric device called Fabry Perot interferometer. A Fabry - Perot Interferometer is an optical interferometer in which a beam of light undergoes multiples reflections between two reflecting ...
Mohammad Nor, Adibah
core
High Voltage, EarlyView.ABSTRACT The detection of partial discharges (PD) on the power transformer tank demands higher sensitivity in ultrasonic detection. To target the detection frequency band for sensor optimisation and enhance sensitivity, this paper presents a dual‐frequency sensitivity model for optical fibre ultrasonic sensors.
Sihan Wang +4 more
wiley +1 more source
Observation of interaction-induced modulations of a quantum Hall liquid’s area
Nature Communications, 2016 Quantum Hall liquids play host to a wide range of unusual physics. Here, the authors use an electronic Fabry-Pérot interferometer to observe modulations of a quantum Hall liquid’s area, which can offer a means to study the statistics of fractional ...
I. Sivan +6 more
doaj +1 more source
The frequency-dependent directivity of a planar Fabry-Perot polymer film ultrasound sensor [PDF]
, 2007 A model of the frequency-dependent directivity of a planar, optically-addressed, Fabry-Perot (FP), polymer film ultrasound sensor is described and validated against experimental directivity measurements made over a frequency range of 1 to 15 MHz and ...
Beard, PC, Cox, BT
core
Advanced Sensing Materials and Their Applications for Power Sensors
High Voltage, EarlyView.ABSTRACT The construction of new‐generation power systems imposes stringent requirements on the safety and reliability of critical equipment, making accurate state perception essential for grid security and digital transformation. Sensing materials fundamentally determine sensor performance in terms of sensitivity, bandwidth, environmental adaptability
Weigen Chen +8 more
wiley +1 more source
Femtosecond Laser Introduced Cantilever Beam on Optical Fiber for Vibration Sensing
SensorsAn all-fiber vibration sensor based on the Fabry-Perot interferometer (FPI) is proposed and experimentally evaluated in this study. The sensor is fabricated by introducing a Fabry-Perot cavity to the single-mode fiber using femtosecond laser ablation ...
Jin Qiu +7 more
doaj +1 more source
Fabry-Perot interferometer using curved plates
, 2000 Fabry-Perot interferometer with curved plates is described. It is found that the partially reflecting surfaces of the Fabry-Perot interferometer need not be necessarily flat.
Udupa, D. V. +5 more
core +1 more source
Journal of Microscopy, EarlyView.Abstract Joint Brillouin–Raman micro‐spectroscopy (BRMS) enables simultaneous, non‐destructive characterisation of the mechanical and chemical properties of soft materials at the micrometre scale, combining GHz‐range viscoelastic information from acoustic modes with the vibrational fingerprint of molecular species.
Alessandra Anna Passeri +4 more
wiley +1 more source
A Coaxial Cable Fabry-Perot Interferometer for Sensing Applications
Sensors, 2013 This paper reports a novel coaxial cable Fabry-Perot interferometer for sensing applications. The sensor is fabricated by drilling two holes half-way into a coaxial cable. The device physics was described.
Ming Luo +5 more
doaj +1 more source