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High Q micro-ring resonators fabricated from polycrystalline aluminum nitride films for near infrared and visible photonics
High Q micro-ring resonators polycrystalline aluminum nitride films visible photonics Optics
2012/5/29
We demonstrate wideband integrated photonic circuits in sputter-deposited aluminum nitride (AlN) thin films. At both near-infrared and visible wavelengths, we achieve low propagation loss in integrate...
A periodic add/drop system in a fiber ring network was investigated using a reconfigurable optical add/drop multiplexer (ROADM) in a re-circulating fiber loop. After seven cascaded add/drop nodes at e...
Tight focusing of a double-ring-shaped, azimuth ally polarize d beam
Tight focusing a double-ring-shaped azimuth ally polarize d beam
2013/7/3
We study the focusing properties of a double-ring-shaped azimuthally polarized beam through an annular high NA objective lens. It is shown that a subwavelength focal hole (～ 0:5λ) with a quite long de...
We propose a methodology to construct excited states with a fixed angular momentum, namely,
“yrast excited states” of finite-size one-dimensional bosonic systems with periodic boundary conditions.The...
Collective photon emission from symmetric states created with Rydberg atoms on a ring lattice
Collective photon emission symmetric states Rydberg atoms
2010/10/21
We discuss the creation of non-classical light from collective atomic states that are prepared in a ring-shaped lattice. These states are realized by exploiting the strong interaction between atoms in...
Improved nonlinear optimization in the storage ring of the modernsynchrotron radiation light source
storage ring nonlinear optimization harmonic compensation single resonance approach
2009/8/14
In the storage ring of the third generation light sources, nonlinear optimization is an indispensable course in order to obtain ample dynamic acceptances and to reach high injection efficiency and lon...
New chromaticity compensation approach and dynamic aperture increase in the SSRF storage ring
SSRF storage ring chromaticity compensation nonlinear optimization dynamic aperture sextupole
2009/8/14
Strong chromatic sextupoles used to compensate natural chromaticities in the third generation light source storage ring usually reduce dynamic aperture drastically. Many optimization methods can be us...