Results 161 to 170 of about 2,942,065 (392)

Optical alignment procedure for an unstable resonator high-power laser [PDF]

, 1977
John G. Ackenhusen, D. G. Steel
openalex   +1 more source

Hyperbolic Metamaterial Nano-Resonators Make Poor Single Photon Sources

, 2017
We study the optical properties of quantum dipole emitters coupled to hyperbolic metamaterial nano-resonators using a semi-analytical quasinormal mode approach.
Axelrod, Simon, Dezfouli, Mohsen Kamandar, Helmy, Amr S., Hughes, Stephen, Wong, Herman M. K.   +4 more
core   +1 more source

Local Chirality of Optical Resonances in Ultrasmall Resonators

Physical Review Letters, 2012
In wavelength-scale cavities with chiral-symmetric geometry, wave optical effects can introduce local chirality, that is, a spatial separation of the clockwise and counterclockwise propagating resonant modes. We show that this local chirality results in unidirectional lasing emission in the far field. In the presence of a waveguide, the local chirality
Brandon Redding, Jan Wiersig, Li Ge, Qinghai Song, Glenn S. Solomon, Hui Cao   +5 more
openaire   +4 more sources

Microstructure, Mechanical Properties, and Antibacterial Performance of Novel Fe‐Mn‐Zn Nanocrystalline Alloys Produced by Mechanical Alloying

Advanced Engineering Materials, EarlyView.
This article presents the development of Fe‐Mn‐Zn nanocrystalline alloys (0–9 wt% Zn) by mechanical alloying and subsequently hot pressing. Their microstructure, density, hardness, wear resistance, corrosion behavior, and antibacterial properties are systematically examined.
Ilker Emin Dag, Funda Kilic, Mrutyunjay Panigrahi, Baris Avar   +3 more
wiley   +1 more source

Research Progress of Whispering Gallery Mode Optical Microcavity and Its Application

Guangtongxin yanjiu
In recent years, high quality factor echo wall mode optical microcavities have developed rapidly and become a hot research topic in the fields of optics and physics. Optical microcavity is a kind of micro optical element.
HUANG Jiaqi, ZOU Hui
doaj  

OPTICAL QUALITY OF TILTED SPHERICAL MIRROR UNSTABLE RESONATORS [PDF]

, 1980
C. C. Cason, Robert W. Jones, J. F. Perkins   +2 more
openalex   +1 more source

Femtosecond Single‐ and Double‐Pulse Fabrication of Periodic Nanostructures on Stainless Steel for Surface‐Enhanced Raman Spectroscopy

Advanced Engineering Materials, EarlyView.
Periodic submicron features are fabricated on 304 stainless steel using single and double femtosecond laser pulses. By adjusting polarization, fluence, and inter‐pulse delay, 1D and 2D nanostructures are formed. Enhanced hydrophobicity and dense surface‐enhanced Raman spectroscopy hotspots enable analyte detection down to 10−10 M with good ...
Balaji Baskar, Atiqul Islam Ahad, Carla Berrospe‐Rodriguez, Guillermo Aguilar   +3 more
wiley   +1 more source

Waveguide couplers for ferroelectric optical resonators [PDF]

arXiv, 2014
We report a study of using the same material to fabricate a whispering gallery mode resonator and a coupler. Coupling to high Q whispering gallery modes of the lithium niobate resonator is demonstrated by means of the titanium-doped waveguide. The waveguide coupling approach opens possibilities for simpler and wider practical usage of whispering ...
arxiv  

X‐Ray Computed Tomography Quantifies Primary Phases and Reveals Crack Morphology in High‐Cycle Fatigue of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
Primary phases and a fatigue crack are studied in a forged blank of an aluminum alloy using synchrotron and laboratory X‐ray computed tomography. To image the crack, the fatigue test is interrupted, and a static tensile load is applied to open the crack.
Jakob Schröder, Ying Han, Tobias Fritsch, Bardia Hejazi, Alexander Ulbricht, Birgit Skrotzki, Giovanni Bruno   +6 more
wiley   +1 more source

Light Combining for Interferometric Switching

International Journal of Optics, 2012
Interferometric switching as a routing method in sequence of coupled optical microresonators is explored. Mach-Zhender interferometry is extended to systems of side-coupled integrated sequences of resonators (SCISSORs) and coupled resonators optical ...
Marco Masi, Mattia Mancinelli, Paolo Bettotti, Lorenzo Pavesi   +3 more
doaj   +1 more source