Results 11 to 20 of about 17,372 (264)

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

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

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

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

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

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

Subnanosecond Marx Generators for Picosecond Gain-Switched Laser Diodes

open access: yesIEEE Photonics Journal
High precision time-of-flight based light detection and ranging (LiDAR) system needs compact ultrafast pulsed lasers, such as gain-switched semiconductor laser diodes, which have the advantages of low cost, small size, and mass-producible, for short ...
Fuyi Cao   +10 more
doaj   +1 more source

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