Boosting the output power and wall-plug efficiency of lasers on a generic InP platform

2021 ◽  
Author(s):  
Lars Nielsen ◽  
Martijn J. R. Heck
Keyword(s):  
Output Power ◽  
Wall Plug Efficiency

scholarly journals InAs/GaSb superlattice interband cascade light emitting diodes with high output power and high wall-plug efficiency

2019 ◽  
Vol 114 (25) ◽  
pp. 253507 ◽  
Author(s):  
Yi Zhou ◽  
Qi Lu ◽  
Xuliang Chai ◽  
Zhicheng Xu ◽  
Jianxin Chen ◽  
...  
Keyword(s):  
Output Power ◽  
Light Emitting Diodes ◽  
High Output Power ◽  
Light Emitting ◽  
Wall Plug Efficiency ◽  
High Output

High-efficient 650 nm laser bars with an output power of about 10 W and a wall-plug efficiency of 30%

2006 ◽  
Author(s):  
Bernd Sumpf ◽  
Martin Zorn ◽  
Ralf Staske ◽  
Jörg Fricke ◽  
Peter Ressel ◽  
...  
Keyword(s):  
Output Power ◽  
High Efficient ◽  
Wall Plug Efficiency

scholarly journals Improving Emission Uniformity of InGaN/GaN-Based Vertical LEDs by Using Reflective ITO/Ag n-Contact

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 975
Author(s):  
Woong-Sun Yum ◽  
Ji-Hyun Koo ◽  
Dae-Hee Lee ◽  
Young-Hoon Kim ◽  
Young-Kyu Jeong ◽  
...  
Keyword(s):  
Output Power ◽  
Light Emitting Diodes ◽  
Reference Sample ◽  
Light Output ◽  
Light Output Power ◽  
Forward Voltage ◽  
Light Emitting ◽  
Wall Plug Efficiency ◽  
Chip Size ◽  
Reference Samples

We investigated the effect of Ti/Al and ITO/Ag n-type contacts on the emission uniformity and light output of different chip-size vertical-geometry light-emitting diodes (VLEDs) for vehicle headlamp application. The forward voltage of the Ti/Al-based reference VLEDs decreased from 3.38 to 3.20 V at 1500 mA with increasing chip size from (1280 × 1000 µm2) to (1700 × 1700 µm2), whereas that of the ITO/Ag-based samples changed from 3.37 to 3.15 V. Regardless of chip size, the ITO/Ag-based samples revealed higher light output power than the reference samples. For example, the ITO/Ag-based samples (chip size of 1700 × 1700 µm2) exhibited 3.4% higher light output power at 1500 mA than the reference samples. The ITO/Ag samples underwent less degradation in the Wall-plug efficiency (WPE) than the reference sample. For instance, the ITO/Ag-based samples (1700 × 1700 µm2) gave 4.8% higher WPE at 1500 mA than the reference samples. The ITO/Ag-based samples illustrated more uniform emission than the Ti/Al-based sample. Both the reference and ITO/Ag-based samples underwent no degradation when operated at 1500 mA for 1000 h.

Caffeine supplementation for 4-day, followed by acute ingestion, did not impact triathlete output power after submaximal intensity exercise

2019 ◽  
Vol 18 (3) ◽  
pp. 118
Author(s):  
Anderson Pontes Morales ◽  
Felipe Sampaio-Jorge ◽  
Thiago Barth ◽  
Alessandra Alegre De Matos ◽  
Luiz Felipe Da Cruz Rangel ◽  
...  
Keyword(s):  
Blood Lactate ◽  
Output Power ◽  
Body Mass ◽  
Effect Size ◽  
Power Output ◽  
Anaerobic Power ◽  
Lactate Concentration ◽  
Wingate Test ◽  
Large Effect Size ◽  
Acute Ingestion

Introduction: The aim of this study was to test the hypothesis that caffeine supplementation (6 mg·kg-1 body mass) for 4-days, followed by acute intake, would impact five male triathletes output power after performed submaximal intensity exercise. Methods: This was a randomized, double-blind, placebo-controlled crossover study, placebo (4-day) - placebo (acute) PP, placebo (4-days) -caffeine (acute) PC, and caffeine (4-day) - caffeine (acute) CC. Participants abstained from dietary caffeine sources for 4 days and ingested capsules containing either placebo or caffeine (6 mg.kg-1 body mass day in one absorption). The acute trials the capsules containing placebo or caffeine (6 mg.kg-1 body mass day in one absorption) were ingested 60min before completing exercise in a treadmill for 40min (80% VO2max) and to perform the Wingate test. Results: Blood lactate was determined before, 60min after ingestion, and immediately after the exercise on the treadmill, the Wingate test, and after the recovery (10-min). CC and PC trials did not change the cardiopulmonary variables (P>0.05) and the anaerobic power variables (peak/mean power output and fatigue index) (P>0.05). The PC trial compared with PP promoted improvements in the curve power output in 2 sec by 31.19% (large effect-size d = 1.08; P<0.05) and 3 sec by 20% (large effect-size d = 1.19; P<0.05). A 10min recovery was not sufficient to reduce blood lactate concentration in the PC trial compared with PP (PC, 13.73±2.66 vs. PP, 10.26±1.60 mmol.L-1; P<0.05, respectively) (P<0.05). Conclusion: In conclusion, these results indicate that caffeine supplementation (6 mg·kg-1 body mass) for 4 days, followed by acute ingestion, did not impact the triathletes output power after performed submaximal intensity exercise. Nutritional interventions may help researchers and athletes to adapt strategies for manipulating caffeine use.Key-words: caffeine metabolism, Wingate test, blood lactate, performance.

Improvement of Wall Plug Efficiency in Near Infrared Lateral Single-mode LDs at High Temperature

2013 ◽  
Vol 133 (8) ◽  
pp. 1471-1475
Author(s):  
Tetsuya Yagi ◽  
Takuto Maruyama ◽  
Masayuki Kusunoki ◽  
Naoyuki Shimada ◽  
Muneharu Miyashita
Keyword(s):  
High Temperature ◽  
Near Infrared ◽  
Single Mode ◽  
Wall Plug Efficiency
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