Optimization of the optical near-field distribution of metal multilayer dielectric gratings for pulse compressors

2013 ◽  
Author(s):  
Heyuan Guan ◽  
Yunxia Jin ◽  
Shijie Liu ◽  
Fanyu Kong ◽  
Yin Du ◽  
...  
Keyword(s):  
Field Distribution ◽  
Near Field ◽  
Dielectric Gratings ◽  
Multilayer Dielectric

Near-field optical properties of multilayer ridge metal/multilayer-dielectric gratings for pulse compressor

2015 ◽  
Author(s):  
Heyuan Guana ◽  
Chenze Huang ◽  
Zhe Chen ◽  
Yunxia Jin ◽  
Kui Yi ◽  
...  
Keyword(s):  
Optical Properties ◽  
Near Field ◽  
Pulse Compressor ◽  
Dielectric Gratings ◽  
Multilayer Dielectric

scholarly journals Visualization of microwave near-field distribution in sodium chloride and glucose aqueous solutions by a thermo-elastic optical indicator microscope

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zhirayr Baghdasaryan ◽  
Arsen Babajanyan ◽  
Levon Odabashyan ◽  
Jung-Ha Lee ◽  
Barry Friedman ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Aqueous Solutions ◽  
Field Distribution ◽  
Near Field ◽  
Absorption Properties ◽  
Novel Approach ◽  
Concentration Changes ◽  
Biological Liquids ◽  
Optical Indicator ◽  
Distribution Intensity

AbstractIn this study, a new optical method is presented to determine the concentrations of NaCl and glucose aqueous solutions by using a thermo-elastic optical indicator microscope. By measuring the microwave near-field distribution intensity, concentration changes of NaCl and glucose aqueous solutions were detected in the 0–100 mg/ml range, when exposed to microwave irradiation at 12 GHz frequency. Microwave near-field distribution intensity decreased as the NaCl or glucose concentration increased due to the changes of the absorption properties of aqueous solution. This method provides a novel approach for monitoring NaCl and glucose in biological liquids by using a CCD sensor capable of visualizing NaCl and glucose concentrations without scanning.

Analysis of the near field image formation of dielectric gratings

1995 ◽  
Vol 57 (2-3) ◽  
pp. 153-159 ◽  
Author(s):  
Yong Chen ◽  
R.K. Kupka
Keyword(s):  
Near Field ◽  
Image Formation ◽  
Dielectric Gratings

scholarly journals Reconstruction of the near-field distribution in an X-ray waveguide array

2017 ◽  
Vol 50 (3) ◽  
pp. 701-711 ◽  
Author(s):  
Qi Zhong ◽  
Lars Melchior ◽  
Jichang Peng ◽  
Qiushi Huang ◽  
Zhanshan Wang ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Field Distribution ◽  
Phase Retrieval ◽  
Near Field ◽  
Field Pattern ◽  
Waveguide Array ◽  
X Ray ◽  
Field Patterns ◽  
Thickness Variations ◽  
Far Field Pattern

Iterative phase retrieval has been used to reconstruct the near-field distribution behind tailored X-ray waveguide arrays, by inversion of the measured far-field pattern recorded under fully coherent conditions. It is thereby shown that multi-waveguide interference can be exploited to control the near-field distribution behind the waveguide exit. This can, for example, serve to create a secondary quasi-focal spot outside the waveguide structure. For this proof of concept, an array of seven planar Ni/C waveguides are used, with precisely varied guiding layer thickness and cladding layer thickness, as fabricated by high-precision magnetron sputtering systems. The controlled thickness variations in the range of 0.2 nm results in a desired phase shift of the different waveguide beams. Two kinds of samples, a one-dimensional waveguide array and periodic waveguide multilayers, were fabricated, each consisting of seven C layers as guiding layers and eight Ni layers as cladding layers. These are shown to yield distinctly different near-field patterns.

Near Field Distribution of Hollow Dielectric Wall Diagonal Horn Antennas

1999 ◽  
Vol 16 (1) ◽  
pp. 27-32 ◽  
Author(s):  
V N Tiwari ◽  
T Tiwari ◽  
R K Jha
Keyword(s):  
Field Distribution ◽  
Near Field ◽  
Horn Antennas ◽  
Dielectric Wall

MULTILAYER DIELECTRIC RESONATOR ANTENNA TRANSMITARRAY FOR NEAR-FIELD AND FAR-FIELD FIXED RFID READER

2012 ◽  
Vol 27 ◽  
pp. 129-142 ◽  
Author(s):  
Saber Helmy Zainud-Deen ◽  
Shaymaa M. Gaber ◽  
Hend Abd El-Azem Malhat ◽  
Kamal Hassan Awadalla
Keyword(s):  
Dielectric Resonator ◽  
Near Field ◽  
Far Field ◽  
Dielectric Resonator Antenna ◽  
Rfid Reader ◽  
Multilayer Dielectric

Multilayer dielectric gratings for ultrashort pulse compressor

2006 ◽  
Author(s):  
Yaping Dai ◽  
Shijie Liu ◽  
Hongbo He ◽  
Jianda Shao ◽  
Kui Yi ◽  
...  
Keyword(s):  
Ultrashort Pulse ◽  
Pulse Compressor ◽  
Dielectric Gratings ◽  
Multilayer Dielectric
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