Results 1 to 10 of about 16,768 (145)

Laser Fragmentation Synthesis of Colloidal Bismuth Ferrite Particles

open access: yesNanomaterials, 2020
Laser fragmentation of colloidal submicron-sized bismuth ferrite particles was performed by irradiating a liquid jet to synthesize bismuth ferrite nanoparticles. This treatment achieved a size reduction from 450 nm to below 10 nm.
Simon Siebeneicher   +5 more
doaj   +1 more source

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

Compact 50 W All-Solid-State Picosecond Laser System at 1 kHz

open access: yesApplied Sciences, 2020
Compact, stable, high-power and high repetition rate picosecond laser systems are excellent sources for optical parametric chirped pulse amplification systems and laser satellite ranging systems. Compared with the traditional complex high-power amplifier,
Shuaishuai Yang   +4 more
doaj   +1 more source

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

Comparison of the efficacy and safety of picosecond Nd:YAG laser (1,064 nm), picosecond alexandrite laser (755 nm) and 2% hydroquinone cream in the treatment of melasma: A randomized, controlled, assessor-blinded trial

open access: yesFrontiers in Medicine, 2023
BackgroundIncreasing numbers of studies demonstrated that picosecond lasers (Picos) were effective and safe for melasma. However, A limited number of randomized controlled trials (RCTs) regarding Picos contribute to a modest level of evidence.
Surong Liang   +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

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

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

Picosecond Spin Seebeck Effect

open access: yesPhysical Review Letters, 2017
We report time-resolved magneto-optic Kerr effect measurements of the longitudinal spin Seebeck effect driven by an interfacial temperature difference between itinerant electrons and magnons. The measured time-evolution of spin accumulation induced by laser-excitation indicates transfer of angular momentum across Au/Y$_3$Fe$_5$O$_{12}$ and Cu/Y$_3$Fe ...
Kimling, Johannes   +7 more
openaire   +6 more sources

Nanostructuration of Thin Metal Films by Pulsed Laser Irradiations: A Review

open access: yesNanomaterials, 2019
Metal nanostructures are, nowadays, extensively used in applications such as catalysis, electronics, sensing, optoelectronics and others. These applications require the possibility to design and fabricate metal nanostructures directly on functional ...
Francesco Ruffino   +1 more
doaj   +1 more source

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