Results 31 to 40 of about 63,998 (357)

Ultra Fast Nonlinear Optical Tuning of Photonic Crystal Cavities [PDF]

open access: yes, 2006
We demonstrate fast (up to 20 GHz), low power (5 $\mu W$) modulation of photonic crystal (PC) cavities in GaAs containing InAs quantum dots. Rapid modulation through blue-shifting of the cavity resonance is achieved via free carrier injection by an above-
Dirk Englund   +6 more
core   +2 more sources

3.8-μm Mid-Infrared Laser Quasi-Synchronously Pumped by a MOPA Structured Picosecond Yb Fiber Amplifier With Multi-pulse Operation

open access: yesIEEE Photonics Journal, 2016
A picosecond pulsed mid-infrared laser with multi-pulse operation is experimentally demonstrated. This mid-infrared laser was composed of a fiber laser pumped optical parametric oscillator (OPO).
Kaihua Wei, Xuefang Zhou, Xiaomin Lai
doaj   +1 more source

Id reaction and allergic contact dermatitis post-picosecond laser tattoo removal: A case report

open access: yesSAGE 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
doaj   +1 more source

Use of combined picosecond 1064nm and thulium laser 1927nm in melasma treatment – case report

open access: yesJournal of Education, Health and Sport, 2022
Melasma is an acquired, chronic skin pigmentation disorder that affects mainly women and can significantly affect the quality of life and self-esteem of patients.
Urszula Kozinska, Jordi Gras-Ozimek
doaj   +1 more source

Mid-infrared resonant ablation for selective patterning of thin organic films [PDF]

open access: yes, 2014
The fast growing market of organic electronics, including organic photovoltaics (OPV), stimulates the development of versatile technologies for structuring thin-film materials.
Duterte, Charles   +8 more
core   +2 more sources

10 kHz repetition rate picosecond green laser for high-accuracy satellite ranging

open access: yesFrontiers in Physics, 2023
Picosecond pulse laser is the main light source for satellite laser ranging. In this paper, a 10 kHz repetition rate picosecond green laser with an average output power of 5.3 W is demonstrated.
Zhongwei Fan   +7 more
doaj   +1 more source

Self-Guided Intense Laser Pulse Propagation in Air

open access: yesNonlinear 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
doaj   +1 more source

Random Surface Texturing of mc-Silicon for Solar Cells with Picosecond Lasers; a Comparison between 1064 nm, 532 nm and 355 nm Laser Emission Wavelengths [PDF]

open access: yes, 2015
Multicrystalline Silicon was textured with picosecond laser. Different laser wavelengths (λ = 1064, 532, 355 nm) where compared regarding laser-induced damage.
Binetti, Simona   +9 more
core   +1 more source

Ultrafast supercontinuum fiber-laser based pump-probe scanning MOKE microscope for the investigation of electron spin dynamics in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution

open access: yes, 2013
We describe a two-color pump-probe scanning magneto-optical Kerr effect (MOKE) microscope which we have developed to investigate electron spin phenomena in semiconductors at cryogenic temperatures with picosecond time and micrometer spatial resolution ...
Biermann, K.   +5 more
core   +1 more source

Thermal Lensing Spectroscopy With Picosecond Pulse Trains and a New Dual Beam Configuration [PDF]

open access: yes, 1982
In this communication, we wish to report on the use of synchronously mode-locked picosecond lasers in a pump-probe configuration for TL spectroscopy. The peak power for these picosecond lasers is very high and, of course, the fundamental of the dye laser
Perry, J. W.   +2 more
core   +1 more source

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