A Comparison of the Focusing Properties of a Fresnel Zone Plate With a Doubly-Hyperbolic Lens for Application in a Free-Space, Focused-Beam Measurement System

2009 ◽  
Vol 57 (2) ◽  
pp. 499-507 ◽  
Author(s):  
David R. Reid ◽  
Glenn S. Smith
Keyword(s):  
Measurement System ◽  
Free Space ◽  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Focused Beam ◽  
Focusing Properties

Tunable focusing properties using optofluidic Fresnel zone plates

Lab on a Chip ◽  
2016 ◽  
Vol 16 (23) ◽  
pp. 4554-4559 ◽  
Author(s):  
Y. Shi ◽  
X. Q. Zhu ◽  
L. Liang ◽  
Y. Yang
Keyword(s):  
Real Time ◽  
Fresnel Zone ◽  
Hybrid Structure ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Fresnel Zone Plates ◽  
The Real ◽  
Zone Plates ◽  
Solid Liquid ◽  
Focusing Properties

This paper demonstrates the real-time tunable focusing properties of Fresnel zone plate using solid–liquid hybrid structure.

scholarly journals Fabrication and Performance Test of Fresnel Zone Plate with 35 nm Outermost Zone Width in Hard X-Ray Region

2010 ◽  
Vol 2010 ◽  
pp. 1-6 ◽  
Author(s):  
Yoshio Suzuki ◽  
Akihisa Takeuchi ◽  
Hisataka Takenaka ◽  
Ikuo Okada
Keyword(s):  
Performance Test ◽  
Fresnel Zone ◽  
Beam Profile ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Etching Technique ◽  
X Ray ◽  
Zone Width ◽  
Focused Beam ◽  
Outermost Zone

A Fresnel zone plate (FZP) with 35 nm outermost zone width has been fabricated and tested in the hard X-ray region. The FZP was made by electron beam lithography and reactive ion etching technique. The performance test of the FZP was carried out by measuring the focused beam profile for coherent hard X-ray beam at the beamline 20XU of SPring-8. The full width at half maximum of the focused beam profile measured by knife-edge scan method is 34.9±2.7 nm, that agrees well with the theoretical value of diffraction-limited resolution. Applications to scanning microscopy were also carried out.

Design of the synchrotron light spot measurement system based on Fresnel zone plate

2020 ◽  
Author(s):  
San-shuang Jin ◽  
Baogen Sun ◽  
Jigang Wang ◽  
Yunkun Zhao ◽  
Fangfang Wu ◽  
...  
Keyword(s):  
Measurement System ◽  
Fresnel Zone ◽  
Light Spot ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Synchrotron Light

scholarly journals Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements

Sensors ◽  
2019 ◽  
Vol 19 (6) ◽  
pp. 1373 ◽  
Author(s):  
Hyunjo Jeong ◽  
Hyojeong Shin ◽  
Shuzeng Zhang ◽  
Xiongbing Li ◽  
Sungjong Cho
Keyword(s):  
Harmonic Generation ◽  
Fresnel Zone ◽  
Second Harmonic ◽  
Nonlinear Parameter ◽  
Zone Plate ◽  
Harmonic Amplitude ◽  
Fresnel Zone Plate ◽  
Sensor Design ◽  
Pulse Echo ◽  
Focused Beam

In nonlinear acoustic measurements involving reflection from the stress-free boundary, the pulse-echo method could not be used because such a boundary is known to destructively change the second harmonic generation (SHG) process. The use of a focusing acoustic beam, however, can improve SHG after reflection from the specimen boundary, and nonlinear pulse-echo methods can be implemented as a practical means of measuring the acoustic nonlinear parameter (β) of solid specimens. This paper investigates the optimal sensor design for pulse-echo SHG and β measurements using Fresnel zone plate (FZP) focused beams. The conceptual design of a sensor configuration uses separate transmission and reception, where a broadband receiver is located at the center and a four-element FZP transmitter is positioned outside the receiver to create a focused beam at the specified position in a solid sample. Comprehensive simulations are performed for focused beam fields analysis and to determine the optimal sensor design using various combinations of focal length, receiver size and frequency. It is shown that the optimally designed sensors for 1 cm thick aluminum can produce the second harmonic amplitude and the uncorrected nonlinear parameter corresponding to the through-transmission method. The sensitivity of the optimal sensors to the changes in the designed sound velocity is analyzed and compared between the odd- and even-type FZPs.

Sign in / Sign up

Export Citation Format

Share Document