Features of Operation of High-Power AlInGaN LEDs at High Pulse Currents

2021 ◽  
Author(s):  
A. L. Zakgeim ◽  
A. E. Ivanov ◽  
A. E. Chernyakov
Keyword(s):  
High Power ◽  
High Pulse

scholarly journals A Compact Accelerator-Based Light Source for High-Power, Full-Bandwidth Tunable Coherent THz Generation

2021 ◽  
Vol 11 (24) ◽  
pp. 11850
Author(s):  
Kaiqing Zhang ◽  
Yin Kang ◽  
Tao Liu ◽  
Zhen Wang ◽  
Chao Feng ◽  
...  
Keyword(s):  
Light Source ◽  
High Power ◽  
Pulse Energy ◽  
Three Dimensional ◽  
Thz Radiation ◽  
Time Resolved ◽  
Narrow Bandwidth ◽  
Radiation Sources ◽  
High Pulse ◽  
Tunable Frequency

Terahertz (THz) radiation sources are increasingly significant for many scientific frontiers, while the generation of THz radiation with high-power at wide-tunable frequencies is still a limitation for most existing methods. In this paper, a compact accelerator-based light source is proposed to produce coherent THz radiation with high pulse energy and tunable frequency from 0.1 THz to 60 THz. By using a frequency beating laser-modulated electron beam and undulator taper, intense coherent THz radiation can be generated through undulators. Theoretical analysis and numerical simulations demonstrate that the proposed technique can generate narrow-bandwidth THz radiation with a pulse energy up to 6.3 millijoule (mJ) and the three-dimensional effects of beam has limited influence on its performance. The proposed technique will open up new opportunities for THz spectroscopic and time-resolved experiments.

scholarly journals Compact, high-pulse-energy, high-power, picosecond master oscillator power amplifier

2014 ◽  
Vol 22 (18) ◽  
pp. 21938 ◽  
Author(s):  
Ho-Yin Chan ◽  
Shaif-ul Alam ◽  
Lin Xu ◽  
James Bateman ◽  
David J. Richardson ◽  
...  
Keyword(s):  
Power Amplifier ◽  
High Power ◽  
Pulse Energy ◽  
Master Oscillator ◽  
Master Oscillator Power Amplifier ◽  
High Pulse Energy ◽  
High Pulse

scholarly journals A comprehensive study of current-crowding effect in high power vertical AlInGaN LEDs under high pulsed current

2021 ◽  
Vol 2086 (1) ◽  
pp. 012084
Author(s):  
A E Ivanov ◽  
A V Aladov ◽  
N Atalnishnikh ◽  
A E Chernyakov ◽  
A L Zakgeim
Keyword(s):  
High Power ◽  
Operating Mode ◽  
Degradation Process ◽  
Current Crowding ◽  
Crowding Effect ◽  
Accelerated Degradation ◽  
High Pulse ◽  
High Pulsed Current ◽  
High Range ◽  
Comprehensive Study

Abstract The goal of the study is examination of current-crowding effect in high power AlInGaN LEDs. This effect was presented by mapping of EL (electroluminescence) near filed under high pulse current. LED chip of vertical design was study in high range of current (10−9 ÷ 70A). This operating mode of LEDs are interesting for different applications, such as pumping lasers, VLC and LiFi, as well as for investigation accelerated degradation process of LEDs.

High-power optical parametric oscillator based on a high-pulse repetition rate, master Nd : KGW laser

2017 ◽  
Vol 47 (4) ◽  
pp. 308-312
Author(s):  
M V Bogdanovich ◽  
A V Grigor'ev ◽  
K I Lantsov ◽  
K V Lepchenkov ◽  
A G Ryabtsev ◽  
...  
Keyword(s):  
High Power ◽  
Optical Parametric Oscillator ◽  
Repetition Rate ◽  
Pulse Repetition Rate ◽  
Parametric Oscillator ◽  
Pulse Repetition ◽  
High Pulse Repetition Rate ◽  
Optical Parametric ◽  
High Pulse

Dynamic Modeling and Wear-Based Remaining Useful Life Prediction of High Power Clutch Systems

2005 ◽  
Vol 48 (2) ◽  
pp. 208-217 ◽  
Author(s):  
Matthew Watson ◽  
Carl Byington ◽  
Douglas Edwards ◽  
Sanket Amin
Keyword(s):  
Dynamic Modeling ◽  
High Power ◽  
Life Prediction ◽  
Remaining Useful Life ◽  
Useful Life

Less Power, Greater Conflict

2018 ◽  
Vol 49 (1) ◽  
pp. 47-62 ◽  
Author(s):  
Petra C. Schmid
Keyword(s):  
Low Power ◽  
High Power ◽  
Goal Pursuit ◽  
Goal Conflict ◽  
Personal Goals ◽  
Multiple Goals ◽  
Objective Performance ◽  
The Future ◽  
The Way

Abstract. Power facilitates goal pursuit, but how does power affect the way people respond to conflict between their multiple goals? Our results showed that higher trait power was associated with reduced experience of conflict in scenarios describing multiple goals (Study 1) and between personal goals (Study 2). Moreover, manipulated low power increased individuals’ experience of goal conflict relative to high power and a control condition (Studies 3 and 4), with the consequence that they planned to invest less into the pursuit of their goals in the future. With its focus on multiple goals and individuals’ experiences during goal pursuit rather than objective performance, the present research uses new angles to examine power effects on goal pursuit.

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