scholarly journals Z shaped like resonator with crystal in the presence of flat mirror based standing wave ratio for optical antenna systems

2020 ◽  
Vol 17 (3) ◽  
pp. 1405 ◽  
Author(s):  
Iraj Sadegh Amiri ◽  
Ahmed Nabih Zaki Rashed ◽  
Preecha Yupapin
Keyword(s):  
Standing Wave ◽  
Cavity Length ◽  
Beat Frequency ◽  
Stability Parameter ◽  
Beam Radius ◽  
Curvature Radius ◽  
Spherical Mirror ◽  
Optical Antenna ◽  
Flat Mirror ◽  
Intermode Beat

<span>This study has outlined the Z resonator shaped with Brewster crystal in the presence of flat mirror for measuring the standing wave ratio. Stability parameter and beam radius are simulated versus thickness, refractive index of the crystal and first and second folding ranges. Beam radius variations are studied against phase angle and curvature radius of spherical mirror in T and S planes. Intermode beat frequency of the system is 216.276 MHz and total cavity length is 693.078 mm. It is important the standing wave ratio is dependent on stability parameter and beam radius variations. </span>

scholarly journals Simulative Study of Simple Ring Resonator Based Brewster Plate for Power System operation Stability

2019 ◽  
Vol 16 (2) ◽  
pp. 1070 ◽  
Author(s):  
Iraj Sadegh Amiri ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Ring Resonator ◽  
Beam Radius ◽  
Curvature Radius ◽  
Spherical Mirror ◽  
Stability Parameters ◽  
Space Length ◽  
Simple Ring ◽  
Positive Effects ◽  
Operation Stability ◽  
Resonator System

<span>This study has outlined the simulative study of simple ring resonator based Brewster plate in the air. The obtained results are achieved with the variations of space length, curvature radius and phase angle of the </span><span>spherical mirror</span><span>. Beam radius criterion and stability parameters are measured with the variations of </span><span>refractive index</span><span> and thickness of Brewster plate in the air. The negative and positive effects of increasing operating parameters are observed on the performance of ring resonator system efficiency. </span>

scholarly journals Numerical investigation of V shaped three elements resonator for optical closed loop system

2019 ◽  
Vol 16 (3) ◽  
pp. 1392 ◽  
Author(s):  
Iraj Sadegh Amiri ◽  
Ahmed Nabih Zaki Rashed
Keyword(s):  
Numerical Investigation ◽  
Phase Angle ◽  
High Performance ◽  
Stability Parameter ◽  
Beam Radius ◽  
Curvature Radius ◽  
Negative Effects ◽  
System Parameters ◽  
Resonator System ◽  
The Stability

<span>This study have outlined numerical investigation of V shaped three element resonator. The stability parameter is measured against </span><span>back mirror curvature radius</span><span>, </span><span>back mirror phase angle</span><span>, </span><span>focusing length</span><span>, </span><span>focusing mirror phase angle</span><span>, </span><span>folding range</span><span> in both S plane and T plane. The stability parameter is changed in positive and negative trend under the operating system parameters. The stability parameter should be optimized in order to achieve high performance efficiency of resonator system. Beam radius variations are also measured versus </span><span>focusing range</span><span>, folding range, and back mirror phase angle. It is clear that the negative effects of increasing system parameters on beam radius variation in both S plane and T plane. </span>

scholarly journals Influence of device to device interconnection elements on the system behavior and stability

2020 ◽  
Vol 18 (2) ◽  
pp. 843 ◽  
Author(s):  
Iraj Sadegh Amiri ◽  
Ahmed Nabih Zaki Rashed ◽  
Preecha Yupapin
Keyword(s):  
Focal Length ◽  
Beam Radius ◽  
Curvature Radius ◽  
Spherical Mirror ◽  
System Operation ◽  
Thin Lens ◽  
Crystal Stability ◽  
Lens Focal Length ◽  
Resonator System ◽  
Tilted Plane

<p>This work has presented the<strong> </strong>interaction between tangential/sagittal cylindrical thin lens in the titled plane parallel crystal. Stability criterion parameters are measured under the control of curvature radius of a spherical mirror, the thickness of the tilted plane crystal, the refractive index of tilted plane crystal, the thickness for a plate of matter and phase angle of the sagittal cylindrical thin lens. Beam radius waist is plotted against the focal length of the tangential cylindrical thin lens. Focal length for both thin lens in resonator crystal is optimized to upgrade the resonator system operation efficiency.</p>

scholarly journals Dynamic Intermode Beat Frequency Control of an Optical Frequency Comb Single Section Quantum Dot Laser by Dual-Cavity Optical Self-Injection

2019 ◽  
Vol 11 (5) ◽  
pp. 1-8
Author(s):  
Sebastian Stutz ◽  
Dominik Auth ◽  
Christoph Weber ◽  
Lukas Drzewietzki ◽  
Oleg Nikiforov ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Frequency Comb ◽  
Frequency Control ◽  
Beat Frequency ◽  
Optical Frequency Comb ◽  
Optical Frequency ◽  
Single Section ◽  
Quantum Dot Laser ◽  
Intermode Beat

scholarly journals Profile measurement of concave spherical mirror and a flat mirror using a high-speed nanoprofiler

2013 ◽  
Vol 8 (1) ◽  
Author(s):  
Koji Usuki ◽  
Takao Kitayama ◽  
Hiroki Matsumura ◽  
Takuya Kojima ◽  
Junichi Uchikoshi ◽  
...  
Keyword(s):  
High Speed ◽  
Spherical Mirror ◽  
Profile Measurement ◽  
Flat Mirror

Ion Beam Figuring System for Ultra-Precise Optics

2012 ◽  
Vol 516 ◽  
pp. 19-24 ◽  
Author(s):  
Zheng Yuan ◽  
Yi Fan Dai ◽  
Xu Hui Xie ◽  
Lin Zhou
Keyword(s):  
Ion Beam ◽  
Fused Silica ◽  
Ion Source ◽  
Radius Of Curvature ◽  
Spherical Mirror ◽  
Gaussian Shape ◽  
Vacuum Chambers ◽  
Effective Aperture ◽  
Flat Mirror ◽  
Ion Beam Figuring

Ion beam figuring (IBF) is a novel technology for Ultra-precise optics. Material is removed from optic surface in atomic or molecular form by physical sputtering. Due to non-contact between the tool and the work piece, the problems involved in the conventional process are avoided, such as edge-effect and tool-wear. The ion beam figuring process is of high determinacy and high efficiency. All these properties make ion beam figuring one of the promising methods for producing mirrors of high precision with nm-rms accuracy. In this article, a new ion beam figuring system which contains doubled vacuum chambers is set up. Optics can be exchanged by a transport vehicle shuttling between the two vacuum chambers without opening the primary vacuum chamber and waiting for the ion source to cool completely, which means the efficiency can be increased greatly. A high performance processing robot contains three linear axes and two angular axes of motion, providing 5-axis ion source positioning capability with high accuracy. The angle can be up to 50° to figure very steep spherical and aspherical surfaces. Then, the beam removal function of Gaussian shape is obtained by an experimental method and it is extremely stable for a long time. Finally, two sample mirrors are figured by the ion beam figuring system: one is a fused silica flat mirror with a 100 mm diameter (90% effective aperture) and an ultra-precise flat mirror with a surface error of 0.89 nm rms, 14.7 nm PV is obtained; the other fused silica concave spherical mirror with a 100 mm aperture (90% effective aperture) and 420 mm radius of curvature is figured and a concave spherical mirror with 1 nm rms, 16.9 nm PV is obtained, which prove that the ion beam figuring system is favourable for the figuring process.

Precise measurement of curvature radius for spherical mirror with large aperture

2014 ◽  
Vol 7 (1) ◽  
pp. 163-168 ◽  
Author(s):  
陈宝刚 CHEN Bao-gang ◽  
明名 MING Ming ◽  
吕天宇 LYU Tian-yu
Keyword(s):  
Precise Measurement ◽  
Curvature Radius ◽  
Spherical Mirror ◽  
Large Aperture

scholarly journals Imaging spectroscopy of high-temperature plasma sources

1992 ◽  
Vol 10 (4) ◽  
pp. 849-860 ◽  
Author(s):  
B. A. Bryunetkin ◽  
S. A. Pikuz ◽  
I. Y. Skobelev ◽  
A. Y. Faenov
Keyword(s):  
Imaging Spectroscopy ◽  
Curvature Radius ◽  
Spherical Mirror ◽  
Temperature Plasma ◽  
Plasma Sources ◽  
Water Window ◽  
Transmission Grating ◽  
Spatially Resolved ◽  
Large Pulse ◽  
Imaging Spectrograph

The imaging spectrograph with spherical crystal and transmission grating have been used to obtain the high spectrally and spatially resolved images of plasma X-ray microsources (fast z-pinch) as well as of laser-produced plasma flares up to 5 mm in extent. The spectral resolution λ/Δλ = 2·104 have been achieved using a quartz spherical mirror with the curvature radius 500 mm. Using a transmission grating spectrometer, the spectral density of power about 105 W/A in the “water window” has been measured in experiments with a fast z-pinch large pulse storage facility.

Theoretical Reveal of Intriguing Standing Wave Modes of Carrying Space Beat-Frequency Phenomenon in Nanopillar Arrays

Plasmonics ◽  
2018 ◽  
Vol 14 (3) ◽  
pp. 711-719
Author(s):  
Xuannan Wu ◽  
Bo Xiang Ji ◽  
Liang Wang ◽  
Yidong Hou ◽  
Wenzhi Qin ◽  
...  
Keyword(s):  
Standing Wave ◽  
Beat Frequency ◽  
Nanopillar Arrays ◽  
Wave Modes
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