Results 61 to 70 of about 10,369 (263)
Diode-pumped 99 fs Yb:CaF_2 oscillator
Optics Letters, 2009 We demonstrate the generation of 99 fs pulses by a mode-locked laser oscillator built around a Yb:CaF(2) crystal. An average power of 380 mW for a 13 nm bandwidth spectrum centered at 1053 nm is obtained. The short-pulse operation is achieved thanks to a saturable absorber mirror and is stabilized by the Kerr lens effect.
Friebel, Florence +11 more
openaire +5 more sources
All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security
Advanced Materials, EarlyView.An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak +4 more
wiley +1 more source
Transient temperature field analysis of periodic side-pumped solid-state lasers
Results in OpticsFor the effective thermal management of a diode-pumped solid-state laser (DPSSL) with periodic pulsing and side-pumping, the transient temperature field of a side-pumped diode-pumped solid-state laser is calculated. The transient temperature field of the
Zheyuan Li +7 more
doaj +1 more source
Randomly polarised beam produced by magnetooptically Q-switched laser
Scientific Reports, 2017 Diode-pumped solid-state micro lasers are compact (centimetre-scale), highly stable, and efficient. Previously, we reported Q-switched lasers incorporating rare-earth substituted iron garnet (RIG) film. Here, the first demonstration of the magnetooptical
Ryohei Morimoto +9 more
doaj +1 more source
IEEE Photonics Journal, 2020 A highly-efficient tunable 1.6 μm MgO:PPLN-OPO, which we believe to be the first one pumped by a diode-end-pumped Raman laser, is demonstrated. A good beam-quality of actively Q-switched Nd:YVO4/YVO4 Raman laser at 1176 nm and
Lei Zhao +13 more
doaj +1 more source
Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix
Advanced Materials, EarlyView.3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández +15 more
wiley +1 more source
Development and Implementation a Programmable Model for Evaluation Pumping Technique
مجلة كلية التربية للبنات, 2019 This work represents development and implementation a programmable model for evaluating pumping technique and spectroscopic properties of solid state laser, as well as designing and constructing a suitable software program to simulate this techniques . A
Asmaa Abdul_Razaq
doaj
Efficient and Compact Diode-Pumped Nd:YAG Lasers at 1073 and 1078 nm
IEEE Photonics Journal, 2016 We report on the efficient diode-pumped continuous-wave laser operation of a Nd:YAG crystal at several wavelengths by using a simple and compact two-mirror laser cavity and an undoped YAG thin plate acting as a Fabry-Pérot (F-P) etalon.
Zhi Lin +7 more
doaj +1 more source
Electrically driven lasing in metal halide perovskites: Challenges and outlook
APL Materials, 2020 Metal halide perovskite semiconductors have shown great potential as emissive layers in light-emitting diodes and gain media in optically pumped lasers, and thus represent a possible foundation for a non-epitaxial electrically driven laser diode. However,
William B. Gunnarsson, Barry P. Rand
doaj +1 more source
Applied Sciences, 2020 The impact of different photovoltaic models for a combined solar array and pumped hydro storage system was investigated. Al-Wehda dam located in Harta city in the northern of Jordan was used to validate the approach. The two-diode (TD), single-diode (SD),
Hussein M. K. Al-Masri +4 more
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