Results 11 to 20 of about 1,856,713 (355)

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

Yellow picosecond diamond Raman laser [PDF]

open access: yes2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), 2017
Visible pulsed lasers are required for many applications, for example in biomedical imaging [1] and STED microscopy [2]. Such applications often have stringent requirements on the wavelength and pulse duration, which are not directly available from typical solid-state sources.
Nikkinen, Jari   +5 more
openaire   +1 more source

Fundamentals of picosecond laser ultrasonics [PDF]

open access: yesUltrasonics, 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

Developments of Space Debris Laser Ranging Technology Including the Applications of Picosecond Lasers

open access: yesApplied 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
doaj   +1 more source

Beating of exciton-dressed states in a single semiconductor InGaAs/GaAs quantum dot [PDF]

open access: yes, 2009
We report picosecond control of excitonic dressed states in a single semiconductor quantum dot. A strong laser pulse couples the exciton and biexciton states, to form an Autler-Townes doublet of the neutral exciton transition.
Boyle, S.J.   +5 more
core   +1 more source

All-Polarization-Maintaining, Mode-Locking Fiber Front-End Laser Delivering Both the Picosecond Seed Laser and the Femtosecond Seed Laser

open access: yesPhotonics, 2023
An ytterbium-doped, mode-locking fiber front-end laser, delivering both a femtosecond seed laser and picosecond seed laser, was demonstrated. The fundamental repetition rate of the 1031 nm mode-locked laser was 32.77 MHz, realized with the all ...
Yinuo Zhang   +6 more
doaj   +1 more source

Variable frequency picosecond optical pulse generation from laser diodes by electrical feedback [PDF]

open access: yes, 1985
High repetition rate picosecond optical pulse generation is achieved by providing electrical feedback (with and without external gain) to a self-pulsating laser diode. The feedback improves pulsation short-term stability (
Izadpanah, S. H.   +4 more
core   +1 more source

High energy green nanosecond and picosecond pulse delivery through a negative curvature fiber for precision micro-machining [PDF]

open access: yes, 2015
In this paper we present an anti-resonant guiding, low-loss Negative Curvature Fiber (NCF) for the efficient delivery of high energy short (ns) and ultrashort (ps) pulsed laser light in the green spectral region.
Carter, Richard M.   +5 more
core   +1 more source

Application of photoelectric technology on melasma

open access: yesPifu-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

Experimental Investigations on Laser Ablation of Aluminum in Sub-Picosecond Regimes

open access: yesApplied 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
doaj   +1 more source

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