Results 51 to 60 of about 453,948 (232)

Increased flow rate of hyperpolarized aqueous solution for dynamic nuclear polarization-enhanced magnetic resonance imaging achieved by an open Fabry–Pérot type microwave resonator [PDF]

Magnetic Resonance, 2020
A continuous flow dynamic nuclear polarization (DNP) employing the Overhauser effect at ambient temperatures can be used among other methods to increase sensitivity of magnetic resonance imaging (MRI).
A. Fedotov, I. Kurakin, S. Fischer, T. Vogl, T. F. Prisner, V. Denysenkov   +5 more
doaj   +1 more source

On fundamental diffraction limitation of finesse of a Fabry–Perot cavity [PDF]

Journal of Optics, 2018
Abstract We perform a theoretical study of finesse limitations of a Fabry–Perot (FP) cavity occurring due to finite size, asymmetry, as well as imperfections of the cavity mirrors. A method of numerical simulations of the eigenvalue problem applicable for both the fundamental and high-order cavity modes is suggested.
Mikhail V Poplavskiy, Andrey B Matsko, Hiroaki Yamamoto, Sergey P Vyatchanin   +3 more
openaire   +3 more sources

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Axially symmetrical Fabry-Perot oscillator with multiple devices inserted in dielectric substrate [PDF]

, 1997
We investigate an axially symmetrical Fabry-Perot oscillator with active devices inserted in a dielectric substrate for power combining of many more devices in the microwave and millimeter wave frequency range.
Sanagi, Minoru, S. Nogi, Nogi, Shigeji, M. Sanagi, Itoga, Toshihide, T. Itoga   +5 more
core   +1 more source

A high precision Fabry-Perot cavity polarimeter at HERA [PDF]

Journal of Instrumentation, 2010
A Fabry-Perot cavity polarimeter, installed in 2003 at HERA for the second phase of its operation, is described. The cavity polarimeter was designed to measure the longitudinal polarisation of the HERA electron beam with high precision for each electron bunch spaced with a time interval of 96ns.
Baudrand, S., Bouchel, M., Brisson, V., Chiche, R., Jacquet, M., Kurbasov, S., Li, G., Pascaud, C., Reboux, A., Soskov, V., Zhang, Zhen, Zomer, F., Beckingham, M., Behnke, T., Coppola, N., Meyners, N., Pitzl, D., Schmitt, S., Authier, M., Deck-Betinelli, P., Queinec, Y., Pinard, L.   +21 more
openaire   +4 more sources

Physics‐Aware Machine‐Learning‐Driven Inverse Design of Broadband Ultra‐Open Acoustic Metamaterials

Advanced Science, EarlyView.
A physics‐aware machine‐learning framework enables inverse design of ultra‐open acoustic silencers by decoupling spectral and radial design spaces. The approach rapidly identifies broadband, compact, and highly ventilated architectures, while revealing hidden linear design rules that link geometry, impedance matching, and acoustic performance.
Zhiwei Yang, Mengyu Li, Xiaohang Xie, Ao Chen, Thomas G. Bifano, Xin Zhang   +5 more
wiley   +1 more source

Tunable transform-limited pulse generation using self-injection locking of an FP laser [PDF]

, 1993
Wavelength-tunable, near transform-limited pulses have been generated using a Fabry-Perot laser diode coupled to a fiber loop containing a fiber Fabry-Perot resonator (FFPR) and a polarization controller.
Barry, Liam P., Debeau, J., O\u27Dowd, R.F., R. Boittin, J. Debau, O'Dowd, R.F., R. F. O’dowd, L. P. Barry, Boittin, R., R.F. O'Dowd, L.P. Barry   +10 more
core   +3 more sources

Femtosecond Laser Introduced Cantilever Beam on Optical Fiber for Vibration Sensing

Sensors
An 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, Zijie Wang, Zhihong Ke, Tianlong Tao, Shuhui Liu, Quanrong Deng, Wei Huang, Weijun Tong   +7 more
doaj   +1 more source

Absolute Single Cavity Length Interrogation of Fiber-Optic Compound Fabry–Perot Pressure Sensors Through a White Light Non-Scanning Correlation Method

Sensors, 2019
A white light non-scanning correlation interrogation system was proposed and built to interrogate absolute length of the air cavity of fiber-optic compound Fabry–Perot pressure sensors for the extraction of pressure value.
Zilong Guo, Wentao Lv, Wei Wang, Qingqing Chen, Xiongxing Zhang, Haibin Chen, Zhibo Ma   +6 more
doaj   +1 more source

Advances in Se Wide‐Bandgap Photovoltaics and TexSe1‐x SWIR Photodiodes

Advanced Science, EarlyView.
In this review, fundamental properties and current challenges in Se photovoltaics (PVs) for tandem and indoor PVs and TexSe1‐x alloys for short wave infrared photodiodes are discussed. A case is made for the practicality of elemental chalcogenide optoelectronics, and a pathway toward resolving the key challenges in these respective technologies is ...
Adam D. Alfieri, Deep Jariwala
wiley   +1 more source