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Picosecond and sub-picosecond pulse generation in semiconductor lasers [PDF]
Journal de Physique III, 1992 Generation of short optical pulses in semiconductor lasers is of practical interest for an increasing number of applications. It is also of fundamental interest because of its tight relation with the field of semiconductor laser dynamics. After an introductory review, we compare the performances of gain-switching, Q-switching and mode-locking ...
Lourtioz, J.-M. +2 more
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Self-Guided Intense Laser Pulse Propagation in Air
Nonlinear Analysis, 2001 We report on observation of self-guiding of picosecond laser pulses in air that produces large-scale self-phase modulation. The converging picosecond laser beam produced a confined filament over 3 m of propagation with the whitelight spectrum.
R. Danielius +3 more
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Experimental Investigations on Laser Ablation of Aluminum in Sub-Picosecond Regimes
Applied Sciences, 2020 Due to high power and ultrashort pulses, femtosecond lasers excel at (but are not limited to) processing materials whose thicknesses are less than 500 microns. Numerous experiments and theoretical analyses testify to the fact that there are solid grounds
Katarzyna Garasz, Marek Kocik
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Id reaction and allergic contact dermatitis post-picosecond laser tattoo removal: A case report
SAGE Open Medical Case Reports, 2021 The novel picosecond lasers have emerged as a mainstay device in laser tattoo removal alongside Q-switch lasers, considered the gold standard in the field.
Ian TY Wong, Larry WK Cheung
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Applied Sciences, 2021 Debris laser ranging (DLR) is receiving considerable attention as an accurate and effective method of determining and predicting the orbits of space debris.
Haifeng Zhang +7 more
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CosmeticsThe use of low-fluence picosecond (LFPS) 1064 nm neodymium-doped yttrium aluminum garnet (Nd:YAG) lasers, referred to as laser toning, is increasingly acknowledged as an effective treatment for pigmentation disorders in the Asian skin phenotype.
Po-Hsuan Lu +3 more
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Photonics, 2023 In synthetic diamond plates, the intrapulse-correlated dynamics of self-phase modulation and spontaneous nonresonant Raman scattering by center-zone optical phonons were for the first time directly investigated for tightly focused (focusing numerical ...
Sergey Kudryashov +2 more
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Picosecond laser filamentation in air
New Journal of Physics, 2016 The propagation of intense picosecond laser pulses in air in the presence of strong nonlinear self-action effects and air ionization is investigated experimentally and numerically.
Andreas Schmitt-Sody +4 more
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Over 20-W Mid-Infrared Picosecond Optical Parametric Oscillator
IEEE Photonics Journal, 2015 We report on a high-average-power mid-infrared picosecond optical parametric oscillator (OPO) synchronously pumped by a Nd:YVO4 mode-locked laser. By use of the MgO-doped periodically poled LiNbO3 as the nonlinear crystal, up to 20.2-W picosecond laser ...
Zhipeng Qin +4 more
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The influence of the excitation pulse length on ultrafast magnetization dynamics in nickel
Structural Dynamics, 2015 The laser-induced demagnetization of a ferromagnet is caused by the temperature of the electron gas as well as the lattice temperature. For long excitation pulses, the two reservoirs are in thermal equilibrium.
A. Fognini +5 more
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