Shallow Surface Reliefs on Zn-Diffusion VCSELs for High-Speed and High-Power Single-Mode Performances

2018 ◽  
Author(s):  
Zuhaib Khan ◽  
Chen-Lung Cheng ◽  
Kai-Lun Chi ◽  
Jin-Wei Shi
Keyword(s):  
High Power ◽  
High Speed ◽  
Single Mode ◽  
Zn Diffusion

High-power high-speed single-mode diode lasers for optical intersatellite link applications

1998 ◽  
Author(s):  
Benjamin Li ◽  
WeiJian Sha ◽  
PingHui S. Yeh ◽  
Radhakrishnan Nagarajan ◽  
Richard R. Craig
Keyword(s):  
High Power ◽  
High Speed ◽  
Diode Lasers ◽  
Single Mode

High-Power and Highly Single-Mode Zn-Diffusion VCSELs at 940 nm Wavelength

2019 ◽  
Author(s):  
Zuhaib Khan ◽  
Jie-Chen Shih ◽  
Chen-Lung Cheng ◽  
Jin-Wei Shi
Keyword(s):  
High Power ◽  
Single Mode ◽  
Zn Diffusion

Performance analysis of magnetic gear with Halbach array for high power and high speed

2020 ◽  
Vol 64 (1-4) ◽  
pp. 959-967
Author(s):  
Se-Yeong Kim ◽  
Tae-Woo Lee ◽  
Yon-Do Chun ◽  
Do-Kwan Hong
Keyword(s):  
Permanent Magnet ◽  
Eddy Current ◽  
High Power ◽  
High Speed ◽  
Torque Ripple ◽  
Eddy Current Loss ◽  
Element Analysis ◽  
Current Loss ◽  
Halbach Array ◽  
Magnetic Gear

In this study, we propose a non-contact 80 kW, 60,000 rpm coaxial magnetic gear (CMG) model for high speed and high power applications. Two models with the same power but different radial and axial sizes were optimized using response surface methodology. Both models employed a Halbach array to increase torque. Also, an edge fillet was applied to the radial magnetized permanent magnet to reduce torque ripple, and an axial gap was applied to the permanent magnet with a radial gap to reduce eddy current loss. The models were analyzed using 2-D and 3-D finite element analysis. The torque, torque ripple and eddy current loss were compared in both models according to the materials used, including Sm2Co17, NdFeBs (N42SH, N48SH). Also, the structural stability of the pole piece structure was investigated by forced vibration analysis. Critical speed results from rotordynamics analysis are also presented.

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