Very high power superluminescent diodes as an alternative to fluorescent fiber-doped light sources

1999 ◽  
Author(s):  
A. T. Semenov ◽  
Vladimir R. Shidlovski ◽  
Max E. Lipin ◽  
V. E. Rafailov
Keyword(s):  
High Power ◽  
Light Sources ◽  
Superluminescent Diodes ◽  
Very High

High power low coherent light sources based on superluminescent diodes

2020 ◽  
Author(s):  
Alexander Chamorovskiy ◽  
Stepan N. Il'chenko ◽  
Andrey S. Anikeev ◽  
Vladimir R. Shidlovski ◽  
Sergei D. Yakubovich
Keyword(s):  
High Power ◽  
Light Sources ◽  
Coherent Light ◽  
Superluminescent Diodes

Performance Analysis of Various Types of High Power Light Emitting Diodes

2018 ◽  
pp. 91-98 ◽  
Author(s):  
Kamalika Ghosh ◽  
Debashis Raul
Keyword(s):  
High Power ◽  
Light Emitting Diode ◽  
Life Time ◽  
Effect Of Temperature ◽  
Light Sources ◽  
Test Results ◽  
Light Emitting ◽  
Tropical Countries ◽  
Cause Of Failure ◽  
Very High

Solid state, energy efficient light emitting diode (LED) technology is coming up to replace the conventional gas discharge, etc. light sources. Although declared life of LED is very high but in tropical countries their life time appears very short. This phenomenon is becoming the most drawbacks for usage of LED. To search out the reason for the failure lead to undertake thorough study on the performance of LED specifically on the various environmental conditions. Experimentation was carried out with various types of commercially available high power LED. Failure in tropical countries may be due to effect of temperature. Test results have been noted at various major parts of LEDs, e.g. die, and sink area. Detail analysis of test results at various parts of LEDs in different conditions tends to have some idea about the cause of failure of the LEDs in tropical countries with high ambient temperature and less scope of heat generation by the light source.

1.0^|^mu;m High-power and Broad Spectral Bandwidth Superluminescent Diodes

2013 ◽  
Vol 133 (8) ◽  
pp. 1437-1442
Author(s):  
Tsuyoshi Ohgoh ◽  
Atsushi Mukai ◽  
Junya Yaguchi ◽  
Hideki Asano
Keyword(s):  
High Power ◽  
Spectral Bandwidth ◽  
Superluminescent Diodes

scholarly journals Analysis on High-Power Seaport LED Luminaire with Uniform Light Distribution Based on Optimized Lens and Heatsink

2021 ◽  
Vol 11 (9) ◽  
pp. 4035
Author(s):  
Jinsheon Kim ◽  
Jeungmo Kang ◽  
Woojin Jang
Keyword(s):  
Light Source ◽  
High Power ◽  
Heat Dissipation ◽  
Light Emitting Diode ◽  
Light Distribution ◽  
Light Sources ◽  
Led Light ◽  
High Power Led ◽  
Distribution Requirement ◽  
Lighting Application

In the case of light-emitting diode (LED) seaport luminaires, they should be designed in consideration of glare, average illuminance, and overall uniformity. Although it is possible to implement light distribution through auxiliary devices such as reflectors, it means increasing the weight and size of the luminaire, which reduces the feasibility. Considering the special environment of seaport luminaires, which are installed at a height of 30 m or more, it is necessary to reduce the weight of the device, facilitate replacement, and secure a light source with a long life. In this paper, an optimized lens design was investigated to provide uniform light distribution to meet the requirement in the seaport lighting application. Four types of lens were designed and fabricated to verify the uniform light distribution requirement for the seaport lighting application. Using numerical analysis, we optimized the lens that provides the required minimum overall uniformity for the seaport lighting application. A theoretical analysis for the heatsink structure and shape were conducted to reduce the heat from the high-power LED light sources up to 250 W. As a result of these analyses on the heat dissipation characteristics of the high-power LED light source used in the LED seaport luminaire, the heatsink with hexagonal-shape fins shows the best heat dissipation effect. Finally, a prototype LED seaport luminaire with an optimized lens and heat sink was fabricated and tested in a real seaport environment. The light distribution characteristics of this prototype LED seaport luminaire were compared with a commercial high-pressure sodium luminaire and metal halide luminaire.

scholarly journals High power GaN-based blue superluminescent diodes with low spectral modulation

AIP Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 045202
Author(s):  
Wei Xiong ◽  
Lei Hu ◽  
Jianping Liu ◽  
Lingrong Jiang ◽  
Aiqin Tian ◽  
...  
Keyword(s):  
High Power ◽  
Spectral Modulation ◽  
Superluminescent Diodes
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