scholarly journals Laser synthesis of a weakly agglomerated aluminium oxide nanopowder doped with terbium and ytterbium

2021 ◽  
Vol 2131 (5) ◽  
pp. 052086
Author(s):  
A V Kharkova ◽  
D A Kochuev ◽  
N N Davidov
Keyword(s):  
Femtosecond Laser ◽  
Electrostatic Precipitator ◽  
Laser System ◽  
Narrow Particle Size Distribution ◽  
Treatment Area ◽  
Sem Images ◽  
Laser Synthesis ◽  
Synthesis Of Nanoparticles ◽  
Powdery Material ◽  
Focused Beam

Abstract This paper describes a method of femtosecond laser synthesis of nanoparticles of powdered aluminum oxide doped with terbium and ytterbium was developed. The formation of a plasma torch of nanoparticles of a powdery material is carried out as a result of ablation under the influence of a sharply focused beam of femtosecond laser radiation with an intensity of 108- 1010W/m2. The radiation source is the TETA-10 laser system. SEM images of the obtained nanopowders are presented. Spherical nanoparticles of narrow particle size distribution in the range from 5 to 15 nm was synthesized with the ability to control the size of nanoparticles by purposefully changing the parameters and characteristics of pulsed radiation in the treatment area. The design of a specialized high-voltage electrostatic precipitator up to 25 kV for capturing ablated nanoparticles in an electron cloud of increased concentration was developed.

Femtosecond laser system for micromachining of the materials

2015 ◽  
Author(s):  
R. Barbucha ◽  
M. Kocik ◽  
M. Tański ◽  
K. Garasz ◽  
T. Petrov ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser System

Development of systems for the laser synthesis of nanoparticles starting from liquid precursors

2012 ◽  
Vol 258 (23) ◽  
pp. 9326-9332 ◽  
Author(s):  
E. Popovici ◽  
C. Luculescu ◽  
R. Alexandrescu ◽  
C. Fleaca ◽  
F. Dumitrache ◽  
...  
Keyword(s):  
Laser Synthesis ◽  
Synthesis Of Nanoparticles ◽  
Liquid Precursors

scholarly journals 50 μJ Femtosecond Laser System Based on Strictly All-Fiber CPA Structure

2016 ◽  
Vol 8 (5) ◽  
pp. 1-6 ◽  
Author(s):  
Feng Li ◽  
Zhi Yang ◽  
Wei Zhao ◽  
Qianglong Li ◽  
Xin Zhang ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser System

Power Ultraviolet Laser Source Based on Photonic Crystal Fiber Femtosecond Laser System

2009 ◽  
Vol 36 (11) ◽  
pp. 2812-2816
Author(s):  
刘华刚 Liu Huagang ◽  
胡明列 Hu Minglie ◽  
刘博文 Liu Bowen ◽  
宋有建 Song Youjian ◽  
柴路 Chai Lu ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Femtosecond Laser ◽  
Photonic Crystal Fiber ◽  
Laser System ◽  
Laser Source ◽  
Ultraviolet Laser ◽  
Crystal Fiber

Modeling the Femtosecond Laser Pulse-Train Ablation of Dielectrics

2005 ◽  
Author(s):  
L. Jiang ◽  
H. L. Tsai
Keyword(s):  
Optical Properties ◽  
Laser Pulse ◽  
Femtosecond Laser ◽  
Pulse Train ◽  
Femtosecond Pulse ◽  
Laser System ◽  
Ablation Depth ◽  
Plasma Model ◽  
Depth Zone

Recently, a new laser micromachining technique using multiple femtosecond pulses with a picosecond-to-nanosecond separation as a train group has demonstrated the ability to increase the ablation quality of dielectrics and semiconductors. However, the mechanisms involved in the technique are not fully understood. This study employs the plasma model recently developed by the authors to analyze the femtosecond pulse-train ablation of dielectrics. It is found that the transient significantly varying optical properties are the important reasons that lead to the advantages of the pulse-train technique. It has demonstrated that there exits a constant ablation-depth zone with respect to fluence, which has also been observed experimentally. By using the pulse-train technology, it is possible to obtain repeatable nanostructures, even when the laser system is subject to some fluctuations in fluences.

Attainment of a 40 TW peak output power with a visible-range hybrid femtosecond laser system

2019 ◽  
Vol 49 (10) ◽  
pp. 901-904 ◽  
Author(s):  
S V Alekseev ◽  
N G Ivanov ◽  
V F Losev ◽  
G A Mesyats ◽  
L D Mikheev ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Output Power ◽  
Laser System ◽  
Visible Range ◽  
Peak Output Power

Femtosecond Laser Synthesis of AuAg Nanoalloys: Photoinduced Oxidation and Ions Release

2010 ◽  
Vol 114 (23) ◽  
pp. 10403-10409 ◽  
Author(s):  
Sébastien Besner ◽  
Michel Meunier
Keyword(s):  
Femtosecond Laser ◽  
Laser Synthesis

All-Solid-State Near-Infrared and Blue Femtosecond Laser System

2002 ◽  
Vol 19 (2) ◽  
pp. 203-204 ◽  
Author(s):  
Bai Jin-Tao ◽  
Chen Guo-Fu ◽  
Huang Sheng-Hong ◽  
Yu Lian-Jun ◽  
Wang Yi-Shan
Keyword(s):  
Solid State ◽  
Femtosecond Laser ◽  
Near Infrared ◽  
Laser System

Development of a 100-terawatt hybrid femtosecond laser system

2010 ◽  
Author(s):  
V. Losev ◽  
S. Alekseev ◽  
N. Ivanov ◽  
B. Kovalchuk ◽  
L. Mikheev ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser System

Femtosecond laser-processed staining microchip for one-step preparation of fluorescent DNA sample without loss of DNAs

2019 ◽  
Author(s):  
Yeongseok Jang ◽  
Hojun Shin ◽  
Jinmu Jung ◽  
Jonghyun Oh
Keyword(s):  
Femtosecond Laser ◽  
Performance Test ◽  
Staining Method ◽  
Laser System ◽  
Molecular Transport ◽  
Main Channel ◽  
Step Procedure ◽  
One Step ◽  
On Chip ◽  
The One

In this study, we propose a microchip that is sequentially capable of fluorescently staining and washing DNAs. The main advantage of this microchip is that it allows for one-step preparation of small amounts of solution without degrading microscopic bio-objects such as the DNAs, cells, and biomolecules to be stained. The microchip consists of two inlets, the main channel, staining zone, washing zone, and one outlet, and was processed using a femtosecond laser system. High molecular transport of rhodamine B to deionized water was observed in the performance test of the microchip. Results revealed that the one-step procedure of on-chip DNA staining and washing was excellent compared to the conventional staining method. The one-step preparation of stained and washed DNAs through the microchip will be useful for preparing small volumes of experimental samples.

Sign in / Sign up

Export Citation Format

Share Document