Results 41 to 50 of about 30,334 (188)

Construction of Optical Topological Cavities Using Photonic Crystals

Frontiers in Physics, 2021
A novel design of the Fabry–Pérot optical cavity is proposed, utilizing both the topological interface state structures and photonic bandgap materials with a controllable reflection phase.
Meng Yuan, Tao Xu, Tao Xu, Zhi Hong Hang, Zhi Hong Hang   +4 more
doaj   +1 more source

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

Measuring the speed of light using beating longitudinal modes in an open-cavity HeNe laser

, 2010
We describe an undergraduate laboratory that combines an accurate measurement of the speed of light, a fundamental investigation of a basic laser system, and a nontrivial use of statistical analysis.
Best, Micheal, D'Orazio, Daniel J., Goodfellow, Kenneth, Pearson, Mark, Scholten, Robert E., Schultz, Justin T., Sidor, Daniel, White, James D.   +7 more
core   +1 more source

Stationary entanglement between two movable mirrors in a classically driven Fabry-Perot cavity [PDF]

, 2006
We consider a Fabry-Perot cavity made by two moving mirrors and driven by an intense classical laser field. We show that stationary entanglement between two vibrational modes of the mirrors, with effective mass of the order of micrograms, can be ...
David Vitali, Gardiner C W, Gozzini A, Gradshteyn I S, Landau L, Laurat J, Nielsen M A, Paolo Tombesi, Paternostro M Vitali D Gigan S Kim M S Brukner C Eisert J Aspelmeyer M, Pinard M, Pinard M, Stefano Mancini   +11 more
core   +2 more sources

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Bose-Einstein condensation and superfluidity of a weakly-interacting photon gas in a nonlinear Fabry-Perot cavity

, 1999
A field theoretical framework for the recently proposed photon condensation effect in a nonlinear Fabry-Perot cavity is discussed. The dynamics of the photon gas turns out to be described by an effective 2D Hamiltonian of a complex massive scalar field ...
Sorella, S. P., Tanzini, A.
core   +1 more source

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

Advanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik, Fedor Kovalev, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Ilya Shadrivov, Mariusz Martyniuk   +6 more
wiley   +1 more source

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

Dynamic modal analysis of monolithic mode-locked semiconductor lasers [PDF]

, 2003
We analyze the advantages and applicability limits of the mode-coupling approach to active, passive, hybrid, and harmonic mode-locking in diode lasers. A simple, computationally efficient numerical model is proposed and applied to several traditional and
Arnold, J.M., Avrutin, E.A., Marsh, J. H.   +2 more
core   +1 more source

Multi‐Dielectric Metasurfaces for Ultrabright, Tunable Structural Color and Reconfigurable Optical Filtering with Extraordinarily Large Color Span

Advanced Optical Materials, EarlyView.
Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah, Yavuz Selim Aydın, Hilmi Volkan Demir   +2 more
wiley   +1 more source