Results 31 to 40 of about 1,228,728 (251)
Rod-Type Ce/Cr/Nd : YAG Ceramic Lasers with White-Light Pump Source
International Journal of Optics, 2022 Ceramic is promising for use as a solid-laser material pumped with solar or lamp light. We developed a Cr3+ ion doped Nd : YAG ceramic laser that converts white light into near-infrared laser light more efficiently.
T. Saiki +7 more
doaj +1 more source
Restorative Dentistry: Dental composite depth of cure with halogen and blue light emitting diode technology [PDF]
, 2009 Objectives To test the hypothesis that a blue light emitting diode (LED) light curing unit (LCU) can produce an equal dental composite depth of cure to a halogen LCU adjusted to give an irradiance of 300 mWcm–2 and to characterise the LCU's light outputs.
Ashworth, Stephen +2 more
core +1 more source
Efficient generation of >2 W of green light by single pass frequency doubling in PPMgLN
, 2007 We report 32% efficient frequency doubling of single frequency 1029 nm light to green light at 514.5 nm using a single pass configuration. A congruent composition, periodically poled magnesium doped lithium niobate (PPMgLN) crystal of 50 mm length was ...
Boyd +14 more
core +1 more source
Power consumption and temperature distribution in WRGB active-matrix OLED displays [PDF]
, 2016 In this paper, the power consumption of a white-red-green-blue (WRGB) active-matrix organic light-emitting device (OLED) display and the resulting temperature distribution across the display are analyzed as a function of the applied image and the ...
Chesterman, Frédérique +5 more
core +2 more sources
PV Powered LED Street Lights Optimization Using Zeta-Sepic converter and Photo-Electro-Thermal Theory [PDF]
International Journal of Industrial Electronics, Control and Optimization, 2020 Nowadays, using the photovoltaic powered LED street lights are spreading due to their higher efficiency and longer lifetime. In this paper, the Zeta-Sepic converter is used to manage the LED light, the PV panel and a battery storage in these systems ...
saeed danyali, Leila Moteiri
doaj +1 more source
Efficient superfluorescent light sources with broad bandwidth
, 1997 We demonstrate various efficient broad-band light sources at ~1µm wavelength with a 3dB bandwidth of up to 65nm at 108mW output power, based on rare-earth doped silica fibers and a simple adjustable spectral ...
Hanna, D.C. +3 more
core +1 more source
High-power broadband laser source tunable from 3.0 um to 4.4 um based on a femtosecond Yb:fiber oscillator [PDF]
, 2011 We describe a tunable broadband mid-infrared laser source based on difference-frequency mixing of a 100 MHz femtosecond Yb:fiber laser oscillator and a Raman-shifted soliton generated with the same laser. The resulting light is tunable over 3.0 um to 4.4
Adler +15 more
core +3 more sources
Matching of Silicon Thin-Film Tandem Solar Cells for Maximum Power Output
International Journal of Photoenergy, 2013 We present a meaningful characterization method for tandem solar cells. The experimental method allows for optimizing the output power instead of the current.
C. Ulbrich +6 more
doaj +1 more source
The GEO 600 laser system [PDF]
, 2002 Interferometric gravitational wave detectors require high optical power, single frequency lasers with very good beam quality and high amplitude and frequency stability as well as high long-term reliability as input light source.
Brendel, M. +8 more
core +1 more source
Optics Express, 2012 We report on the efficiency enhancement in GaN-based light-emitting diodes (LEDs) using ZnO micro-walls grown by a hydrothermal method. The formation of ZnO micro-walls at the indium tin oxide (ITO) border on the LED structure is explained by the heterogeneous nucleation effect.
Jeong, Hyun +6 more
openaire +3 more sources