Results 11 to 20 of about 48,645 (298)

High-power supercontinuum generation with picosecond pulses [PDF]

open access: yes, 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]

open access: yes, 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

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]

open access: yes, 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

Effects of Laser Operating Parameters on Piezoelectric Substrates Micromachining with Picosecond Laser

open access: yesMicromachines, 2014
Ten picoseconds (200 kHz) ultrafast laser micro-structuring of piezoelectric substrates including AT-cut quartz, Lithium Niobate and Lithium Tantalate have been studied for the purpose of piezoelectric devices application ranging from surface acoustic ...
Lamia EL Fissi   +2 more
doaj   +1 more source

Effects of picosecond laser on the multi-colored tattoo removal using Hartley guinea pig: A preliminary study. [PDF]

open access: yesPLoS ONE, 2018
Picosecond lasers have emerged as the leading technology for tattoo removal due to their shorter pulse lengths. To clarify the features of picosecond lasers, we compared picosecond and nanosecond lasers in their ability to remove multi-colored tattoo in ...
Mi Soo Choi   +6 more
doaj   +1 more source

Comparison of 1550-nm nonablative fractional laser versus 755-nm picosecond laser with diffractive lens array for atrophic facial acne scars in asian skin: A prospective randomized split-face clinical study

open access: yesDermatologica Sinica, 2021
Background: Nonablative lasers are popular alternatives for atrophic acne scar treatment in Asia. Objectives: We aimed to compare the efficacy and safety between 1550-nm nonablative fractional laser (NAFL) and 755-nm picosecond laser with diffractive ...
Mao-Ying Lin   +3 more
doaj   +1 more source

ENERGY TRANSFER IN TRIMERIC C-PHYCOCYANIN STUDIED BY PICOSECOND FLUORESCENCE KINETICS [PDF]

open access: yes, 1986
The excited state kinetics of trimeric C-phycocyanin from Mastigocladus laminosus has been measured as a function of the emission and excitation wavelength by the single-photon timing technique with picosecond resolution and simultaneous data analysis. A
John, Wolfhart   +3 more
core   +1 more source

Generation of widely tunable picosecond pulses with large SMSR by externally injecting a gain-switched dual laser source [PDF]

open access: yes, 2004
The authors demonstrate a procedure of generating picosecond optical pulses that are tunable over a wide wavelength range (65 nm) and have very high spectral purity side-mode suppression ratio [(SMSR)>60 dB].
Anandarajah, Prince M.   +2 more
core   +2 more sources

Picosecond and sub-picosecond pulse generation in semiconductor lasers [PDF]

open access: yesJournal 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
openaire   +1 more source

Subsurface Fractional Ablative Resurfacing of a Periareolar Scar Using 1,064-nm Picosecond Laser with Micro-Lens Array [PDF]

open access: yesArchives of Aesthetic Plastic Surgery, 2018
Although picosecond lasers were invented as an effective treatment of pigmented lesions, the Food and Drug Administration has also approved picosecond lasers with fractional mode for treating acne scars and wrinkles on the face.
Yeansu Choi, Eun Soo Park
doaj   +1 more source

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