Results 11 to 20 of about 1,243,301 (300)
Picosecond laser filamentation in air [PDF]
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
doaj +5 more sources
COMPACT PICOSECOND DIODE LASERS
Instruments and Experimental Techniques, 2022 This article presents the electrical circuit, a description of the design, and results of measurements of the radiative watt–ampere and time characteristics of compact inexpensive emitters based on commercial laser diodes with wavelengths from 405 to 850 nm, which operate in the picosecond (70–180 ps) and nanosecond (0.69–1.2 ns) modes.
Voropai, E. S. +5 more
openaire +2 more sources
Picosecond ultrasonics with miniaturized semiconductor lasers [PDF]
Ultrasonics, 2020 There is a great desire to extend ultrasonic techniques to the imaging and characterization of nanoobjects. This can be achieved by picosecond ultrasonics, where by using ultrafast lasers it is possible to generate and detect acoustic waves with frequencies up to terahertz and wavelengths down to nanometers.
Kobecki, Michael +10 more
openaire +6 more sources
Highly coherent picosecond pulse generation with sub-ps jitter and high SMSR by gain switching Discrete Mode laser diodes at 10 GHz line rate [PDF]
, 2009 We demonstrate the generation of picosecond pulses with ~800 fs jitter and SMSR in excess of 60 dB by gain switching a discrete mode laser and compare the results with a commercial DFB ...
Anandarajah, Prince M. +7 more
core +2 more sources
Fundamentals of picosecond laser ultrasonics [PDF]
Ultrasonics, 2015 The aim of this article is to provide an introduction to picosecond laser ultrasonics, a means by which gigahertz-terahertz ultrasonic waves can be generated and detected by ultrashort light pulses. This method can be used to characterize materials with nanometer spatial resolution.
Osamu Matsuda +3 more
openaire +2 more sources
High-power supercontinuum generation with picosecond pulses [PDF]
, 2010 We investigate both theoretically and experimentally the properties of supercontinuum generation in the nearinfrared and visible regimes using high-power picosecond pulses propagating in a photonic crystal optical fiber. We discuss the effect of the pump
Horak, P. +9 more
core +2 more sources
100W fiberised linearly-polarized picosecond ytterbium doped fiber MOPA [PDF]
, 2009 We report a PM, fully-fiberised, picosecond fiber MOPA delivering 20 ps pulses at repetition rates up to 970 MHz and at average powers of up to 100 ...
Andrew Malinowski +9 more
core +2 more sources
Short pulse generation with 40 GHz passively-mode locked Q-dashed Fabry-Pérot laser [PDF]
, 2009 Generation of sub-picosecond pulses by a DC-biased passively mode-locked Fabry-Perot laser is demonstrated. By using a tunable band-pass filter, it is observed that the width of the generated pulses decreases in direct proportion to the optical modes ...
Latkowski, Sylwester +5 more
core +3 more sources
Diode-Pumped High Energy and High Average Power All-Solid-State Picosecond Amplifier Systems
Applied Sciences, 2015 We present our research on the high energy picosecond laser operating at a repetition rate of 1 kHz and the high average power picosecond laser running at 100 kHz based on bulk Nd-doped crystals.
Jiaxing Liu +5 more
doaj +1 more source
Application of photoelectric technology on melasma
Pifu-xingbing zhenliaoxue zazhi, 2022 Melasma is a skin disease where brown or pigmented patches appear on the face. Currently, it is difficult to be treated because of lower success rate and higher recurrence rate.
Hua LI, Yong HAO, Hui HAN
doaj +1 more source