High-quality near-field optical probes by tube etching

1999 ◽  
Vol 75 (2) ◽  
pp. 160-162 ◽  
Author(s):  
Raoul Stöckle ◽  
Christian Fokas ◽  
Volker Deckert ◽  
Renato Zenobi ◽  
Beate Sick ◽  
...  
Keyword(s):  
Near Field ◽  
High Quality ◽  
Optical Probes

scholarly journals Coherent suppression of backscattering in optical microresonators

2020 ◽  
Vol 9 (1) ◽  
Author(s):  
Andreas Ø. Svela ◽  
Jonathan M. Silver ◽  
Leonardo Del Bino ◽  
Shuangyou Zhang ◽  
Michael T. M. Woodley ◽  
...  
Keyword(s):  
Quality Factor ◽  
Bulk Material ◽  
Near Field ◽  
High Quality Factor ◽  
Dual Frequency ◽  
High Quality ◽  
Frequency Combs ◽  
Optical Microresonators ◽  
Whispering Gallery ◽  
The Stability

AbstractAs light propagates along a waveguide, a fraction of the field can be reflected by Rayleigh scatterers. In high-quality-factor whispering-gallery-mode microresonators, this intrinsic backscattering is primarily caused by either surface or bulk material imperfections. For several types of microresonator-based experiments and applications, minimal backscattering in the cavity is of critical importance, and thus, the ability to suppress backscattering is essential. We demonstrate that the introduction of an additional scatterer into the near field of a high-quality-factor microresonator can coherently suppress the amount of backscattering in the microresonator by more than 30 dB. The method relies on controlling the scatterer position such that the intrinsic and scatterer-induced backpropagating fields destructively interfere. This technique is useful in microresonator applications where backscattering is currently limiting the performance of devices, such as ring-laser gyroscopes and dual frequency combs, which both suffer from injection locking. Moreover, these findings are of interest for integrated photonic circuits in which back reflections could negatively impact the stability of laser sources or other components.

Near-field optical probes

2012 ◽  
pp. 173-224 ◽  
Author(s):  
Lukas Novotny ◽  
Bert Hecht
Keyword(s):  
Near Field ◽  
Optical Probes

Approach of Improving Disk Performance to High-Quality Gap Control in Near-Field Optical Disk Drive System

2007 ◽  
Vol 46 (6B) ◽  
pp. 3981-3986 ◽  
Author(s):  
Tsutomu Ishimoto ◽  
Sunmin Kim ◽  
Takeshi Yamasaki ◽  
Tomomi Yukumoto ◽  
Ariyoshi Nakaoki ◽  
...  
Keyword(s):  
Near Field ◽  
Disk Drive ◽  
Optical Disk ◽  
Drive System ◽  
High Quality ◽  
Optical Disk Drive ◽  
Gap Control

Laser technology of shaping near-field optical probes with submicron scale tip

2001 ◽  
Author(s):  
Kirill A. Atlasov ◽  
Alexey I. Kalachev ◽  
Vadim P. Veiko ◽  
Evgeny B. Yakovlev ◽  
Lev N. Kaporsky
Keyword(s):  
Near Field ◽  
Optical Probes ◽  
Laser Technology ◽  
Submicron Scale

Multipole analysis of the radiation from near-field optical probes

2000 ◽  
Vol 25 (3) ◽  
pp. 171 ◽  
Author(s):  
D. J. Shin ◽  
A. Chavez-Pirson ◽  
Y. H. Lee
Keyword(s):  
Near Field ◽  
Optical Probes ◽  
Multipole Analysis

scholarly journals mmWave Measurement of RF Reflectors for 5G Green Communications

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Tao Hong ◽  
Jin Yao ◽  
Cong Liu ◽  
Fei Qi
Keyword(s):  
Near Field ◽  
Computation Time ◽  
Line Of Sight ◽  
Green Communications ◽  
Green Communication ◽  
High Quality ◽  
Field Range ◽  
Imaging Algorithm ◽  
Array Configuration ◽  
Range Migration

In recent years, with the energy consumption and environmental degradation, science and technology embarked on a path of sustainable development. In this situation, 5G green communication system has been widely used. This paper introduces the application of RF reflectors to 5G mmWave, where line-of-sight (LoS) blockage is a major hindrance for the coverage. In particular, we investigate the lab measurement of RF reflectors, which is a critical step from the theory to the practice. Furthermore, through the lab measurement, a 3D near-field range migration (RM) imaging algorithm for MIMO array configuration is proposed, and the sampling scheme is improved to save the computation time while providing high-quality images.

Brighter near-field optical probes by means of improving the optical destruction threshold

1999 ◽  
Vol 194 (2-3) ◽  
pp. 378-382 ◽  
Author(s):  
Stockle ◽  
Schaller ◽  
Deckert ◽  
Fokas ◽  
Zenobi
Keyword(s):  
Near Field ◽  
Optical Probes

Contrast and scattering efficiency of scattering-type near-field optical probes

2004 ◽  
Vol 85 (19) ◽  
pp. 4466 ◽  
Author(s):  
D. Haefliger ◽  
J. M. Plitzko ◽  
R. Hillenbrand
Keyword(s):  
Near Field ◽  
Optical Probes ◽  
Scattering Efficiency

scholarly journals High Quality-Factor Dual-Band Fano Resonances Induced by Bound States in The Continuum Using A Planar Nanohole Slab

2021 ◽  
Author(s):  
Tian Sang ◽  
Qing Mi ◽  
Yao Pei ◽  
Chaoyu Yang ◽  
Shi Li ◽  
...  
Keyword(s):  
Bound States ◽  
Near Field ◽  
Dual Band ◽  
Q Factor ◽  
Fano Resonances ◽  
High Quality ◽  
Potential Applications ◽  
Q Factors ◽  
Symmetry Protected ◽  
The Continuum

Abstract In photonics, it is essential to achieve high quality (Q)-factor resonances to enhance light-mater interactions for improving performances of optical devices. Herein, we demonstrate that high Q-factor dual-band Fano resonances can be achieved by using a planar nanohole slab (PNS) based on the excitation of bound states in the continuum (BICs). By shrinking or expanding the tetramerized holes of the superlattice of the PNS, symmetry-protected BICs can be excited and the locations of Fano resonances as well as their Q-factors can be flexibly tuned. Physical mechanisms for the dual-band Fano resonances can be interpreted as the resonant couplings between the electric-toroidal dipoles or the magnetic-toroidal dipoles based on the far-field multiple decompositions and the near-field distributions of the superlattice. The dual-band Fano resonances of the PNS possess polarization independent feature, they can be survived even the geometric parameters of the PNS are significantly altered, making them more suitable for potential applications.

Ordered arrays of near-field optical probes

2005 ◽  
Author(s):  
Neso Sojic ◽  
Arnaud Chovin ◽  
Patrick Garrigue ◽  
Inka Manek-Honninger ◽  
Laurent Servant
Keyword(s):  
Near Field ◽  
Optical Probes ◽  
Ordered Arrays
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