نتایج جستجو برای: high power laser

تعداد نتایج: 2570868  

2004
Björn A M Hansson Hans M Hertz

The laser plasma is one of the major contenders as a high-power source for future high-volume-manufacturing extreme ultraviolet lithography systems. Such laser–plasma sources require a target system that allows high-repetition-rate operation with low debris and manageable thermal load at the required high laser power. In this paper, we review the development of the liquid-jet target laser plasm...

Journal: :Optics letters 2016
Cory Baumgarten Michael Pedicone Herman Bravo Hanchen Wang Liang Yin Carmen S Menoni Jorge J Rocca Brendan A Reagan

We report the demonstration of a diode-pumped chirped pulse amplification Yb:YAG laser that produces λ=1.03  μm pulses of up to 1.5 J energy compressible to sub-5 ps duration at a repetition rate of 500 Hz (750 W average power). Amplification to high energy takes place in cryogenically cooled Yb:YAG active mirrors designed for kilowatt average power laser operation. This compact laser system wi...

ژورنال: مجله دندانپزشکی 2016

Background and Aims: Nowadays lasers are used as alternatives to the tooth preparation because of reducing pain, bloodshed and stress. The aim of this study was to observe the effect of Er,Cr:YSGG laser on the dental hard tissues. Materials and Methods: For this studty, molar teeth with no caries or dental restoration and enamel cracks were used. The laser power were taken from 0.5, 1, 1.5, ...

Journal: :bulletin of the iranian mathematical society 0
y. yao school of mathematics‎, ‎south china university of technology‎, ‎guangzhou‎, ‎guangdong 510640‎, ‎p‎. ‎r‎. ‎of china. y. yao school of mathematics‎, ‎south china university of technology‎, ‎guangzhou‎, ‎guangdong 510640‎, ‎p‎. ‎r‎. ‎of china.

‎we study the existence of soliton solutions for a class of‎ ‎quasilinear elliptic equation in $mathbb{textbf{r}}^2$ with critical exponential growth‎. ‎this model has been proposed in the self-channeling of a‎ ‎high-power ultra short laser in matter‎.

Lida Ghazanfari Mohammad Etrati Khosroshahi, Zahra Hasan-nejad

Introduction In this study, we describe the results of controlled synthesis and application of gold coated Fe3O4/SiO2 nano-shells combined with the optical property of gold for enhancement of selective photothermal interaction with cancerous cells based on the surface plasmon resonance (SPR) Phenomena. Materials and Methods Magnetite Nano-Particles (MNPs) were prepared by means of co-precipitat...

Journal: :international journal of nanoscience and nanotechnology 2014
s. olyaee z. dashtban

the drawing of frequency-path (f-p) models of optical beams is an approach for nonlinearity analysis in nano-metrology systems and sensors based on the laser interferometers. in this paper, the frequency-path models of four nano-metrology laser interferometry systems are designed, analyzed and simulated, including conventional and modified two- and three-longitudinal-mode laser interferometers....

Journal: :Lasers in surgery and medicine 2010
In Sook Kim Tae Hyung Cho Kwansik Kim Franz E Weber Soon Jung Hwang

BACKGROUND AND OBJECTIVE High-power laser has recently become a physical stimulus for bone regeneration. Little is known about how high-power laser irradiation affects osteoblast differentiation. This study investigated osteoblast responses to high-power laser and combined irradiation with BMP-2 treatment. STUDY DESIGN/MATERIALS AND METHODS MC3T3-E1 pre-osteoblasts were exposed to laser irrad...

A. Hojabri, H. Aminpour, I. Mashaiekhy Asl2, M. Esmaeili,

In this article, we present a specific shape of disk laser which is side-pumped by four non-symmetric hollow- ducts. The use of non-symmetric hollow duct based on two goals of the uniformity of the pump light distribution profile and the homogeneity of pump light profile through the disk. First of all we simulated the pump light distribution in the disk by using Monte-Carlo ray tracing method. ...

Alireza Hojabri, hamed Amin Pour,

We present a novel slanted faces of thin-disk composite Yb:YAG YAG laser which is side-pumped by four non-symmetric hollow- ducts. The pump light distribution in the disk is modeled by using Monte-Carlo ray tracing method. The temperature distribution inside the crystal is calculated by taking into account either the concentration of Yb+3 ion or the different transmission of laser output coupl...

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