scholarly journals High-power UV excilamps excited by a glow discharge

2003 ◽  
Vol 21 (1) ◽  
pp. 115-119 ◽  
Author(s):  
V.S. SKAKUN ◽  
M.I. LOMAEV ◽  
V.F. TARASENKO ◽  
D.V. SHITTS ◽  
G.L. JOHNSON ◽  
...  
Keyword(s):  
Glow Discharge ◽  
High Power ◽  
Average Output Power ◽  
Radiation Power ◽  
Excitation Power ◽  
Inert Gases ◽  
Light Sources ◽  
Spontaneous Radiation ◽  
Average Output ◽  
Spectrum Characteristics

The results on study of light sources based on spontaneous radiation of molecules KrCl* (λ ∼ 222 nm) and XeCl* (λ ∼ 308 nm) excited by a glow discharge are presented. It is demonstrated that additions of light inert gases (He and Ne) lead to increase in emission of radiation power and efficiency in mixtures Kr(Xe)-Cl2. A high-power cylindrical multi-section excilamp was built and energy, time, and spectrum characteristics have been studied. Average output power obtained in the UV spectral range were 1,9 kW at λ ∼ 222 nm and 1,1 kW at λ ∼ 308 nm with efficiencies with respect to the excitation power of up to 14%.

scholarly journals High power mid-infrared supercontinuum generation in a single-mode ZBLAN fiber with up to 218 W average output power

2014 ◽  
Vol 22 (20) ◽  
pp. 24384 ◽  
Author(s):  
Kun Liu ◽  
Jiang Liu ◽  
Hongxing Shi ◽  
Fangzhou Tan ◽  
Pu Wang
Keyword(s):  
Output Power ◽  
High Power ◽  
Average Output Power ◽  
Single Mode ◽  
Supercontinuum Generation ◽  
Average Output ◽  
Mid Infrared

High Power Mid-Infrared Interband Cascade Lasers

1997 ◽  
Vol 484 ◽  
Author(s):  
B. H. Yang ◽  
D. Zhang ◽  
Rui. Q. Yang ◽  
C.-H. Lin ◽  
S. J. Murry ◽  
...  
Keyword(s):  
Output Power ◽  
High Power ◽  
Duty Cycle ◽  
Average Output Power ◽  
Repetition Rate ◽  
Average Output ◽  
Mid Infrared ◽  
Optical Output ◽  
Interband Cascade Lasers ◽  
Cascade Lasers

AbstractWe have demonstrated 4-μm InAs/InGaSb/AlSb interband cascade lasers with optical output power close to 0.5 W per facet with 1-μs pulses at 1 kHz repetition rate. At 10% duty cycle, an average output power ∼20 mW was realized. External and internal quantum efficiencies exceeding 200% have been achieved at 80 K.

scholarly journals Improved Laser Damage Threshold of In2Se3 Saturable Absorber by PVD for High-Power Mode-Locked Er-Doped Fiber Laser

Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1216 ◽  
Author(s):  
Han ◽  
Zhang ◽  
Jiang ◽  
Zhang ◽  
Li ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Output Power ◽  
Saturable Absorber ◽  
High Power ◽  
Average Output Power ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Average Output ◽  
Highly Nonlinear ◽  
Er Doped

In this study, a double-end pumped high-power passively mode-locked erbium-doped fiber laser (EDFL) was realized by employing a few-layered In2Se3 flakes as a saturable absorber (SA). Herein, the uniform large-scale In2Se3 flakes were synthesized by the physical vapor deposition (PVD) method. The PVD-In2Se3 SA exhibited a remarkable damage threshold of higher than 24 mJ/cm2. Meanwhile, the PVD-In2Se3 SA had a modulation depth and saturable intensity of 18.75% and 6.8 MW/cm2, respectively. Based on the In2Se3 SA, the stable bright pulses emitting at 1559.4 nm with an average output power/pulse energy/pulse duration of 122.4 mW/5.8 nJ/14.4 ns were obtained successfully. To our knowledge, 122.4 mW was the new major breakthrough of mode-locked Er-doped fiber lasers. In addition, this is the first demonstration of the dark-bright pulse pair generation based on In2Se3 SA. The maximum average output power of the dark-bright pulse reached 121.2 mW, which also showed significant enhancement in comparison with previous works. Our excellent experiment results fully prove the superiority of our experimental design scheme and indicate that the PVD-In2Se3 could operate as a promising highly-nonlinear photonic material for a high-power fiber laser.

scholarly journals High-power cw CO2 transverse flow laser with a stable multipass cavity: Comparative study

1992 ◽  
Vol 10 (4) ◽  
pp. 865-870 ◽  
Author(s):  
P. Kukiełło ◽  
G. Rabczuk
Keyword(s):  
Comparative Study ◽  
Output Power ◽  
High Power ◽  
Average Output Power ◽  
Industrial Applications ◽  
Transverse Flow ◽  
Average Output ◽  
Different Types ◽  
Academy Of Sciences ◽  
Sustained Discharge

A modular cw CO2 transverse flow, self-sustained discharge-excited laser at an average output power of 1.2 kW was designed and built at the IFFM of the Polish Academy of Sciences for industrial applications. Performance characteristics of the laser measured for a stable resonator folded into different types of multipass configurations are reported and compared.

Comparison of plasma characteristics of high-power pulsed sputtering glow discharge and hollow-cathode discharge

2020 ◽  
Vol 60 (1) ◽  
pp. 015501
Author(s):  
Shoki Abe ◽  
Katsuyuki Takahashi ◽  
Seiji Mukaigawa ◽  
Koichi Takaki ◽  
Ken Yukimura
Keyword(s):  
Glow Discharge ◽  
High Power ◽  
Hollow Cathode ◽  
Hollow Cathode Discharge ◽  
Plasma Characteristics

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.

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