scholarly journals A study on femtosecond laser in glaucoma treatment : energy deposition and thermal increase

2007 ◽  
Author(s):  
Dongxia Hou
Keyword(s):  
Femtosecond Laser ◽  
Energy Deposition ◽  
Glaucoma Treatment

Femtosecond laser for glaucoma treatment: the comparison between simulation and experimentation results on ocular tissue removal

2005 ◽  
Author(s):  
Dong Xia Hou ◽  
Bryan K. A. Ngoi ◽  
Sek Tien Hoh ◽  
Lee Huat K. Koh ◽  
Yuan Zi Deng
Keyword(s):  
Femtosecond Laser ◽  
Ocular Tissue ◽  
Tissue Removal ◽  
Glaucoma Treatment

scholarly journals Experimental Investigation of Linear Energy Deposition Using Femtosecond Laser Filamentation in a M=3 Supersonic Flow.

2018 ◽  
Author(s):  
Paul-Quentin Elias ◽  
Nicolas Severac ◽  
Jean-Marc Luyssen ◽  
Jean-Pierre Tobeli ◽  
François Lambert ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Supersonic Flow ◽  
Femtosecond Laser ◽  
Energy Deposition ◽  
Laser Filamentation

scholarly journals Experimentally validated modeling of the optical energy deposition in highly ionized ambient air by strong femtosecond laser pulses

2021 ◽  
Vol 75 (8) ◽  
Author(s):  
Konstantinos Kaleris ◽  
Ioannis Tazes ◽  
Yannis Orphanos ◽  
Stelios Petrakis ◽  
Makis Bakarezos ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Energy Deposition ◽  
Cell Model ◽  
Ambient Air ◽  
Femtosecond Laser Pulses ◽  
Experimental Results ◽  
Nonlinear Phenomena ◽  
Computational Domain ◽  
Optical Energy ◽  
Particle In Cell

Abstract The deposition of femtosecond laser optical energy in gases leads to the emission of secondary electromagnetic and acoustic radiation. These optoacoustic components have a complex nonlinear dependency on the laser beam characteristics, such as the pulse energy, duration, wavelength and the focusing conditions, as well as on the optical and elastic characteristics of the gaseous medium. The initial interaction times are governed by the high electronic excitation and ionization. These phenomena result in a self-modulation of the laser pulse, significantly affecting the optical energy deposition on the medium. Such complex nonlinear phenomena are very difficult to be studied via analytical equations. To address this, a multiphysics Particle-In-Cell model is applied for the evaluation of the optical energy deposition and plasma generation from tightly focused femtosecond pulses in ambient air. The computational domain of the model is built to describe optical energy deposition in its full spatiotemporal scale. The model is validated by experimental results of the absorbed energy. The agreement between the computational and experimental results provides the basis for the future development of an advanced microstructural Finite Element Method model, which, combined with the Particle-In-Cell model, will have the ability of delivering detailed insights for all the sub-domains and timescales varying from nano- to femto-seconds of the laser-induced breakdown phenomenon. Graphic Abstract

scholarly journals Evidence of noncollisional femtosecond laser energy deposition in dielectric materials

2020 ◽  
Vol 102 (2) ◽  
Author(s):  
G. Duchateau ◽  
B. Chimier ◽  
S. Coudert ◽  
E. Smetanina ◽  
L. Barilleau ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Energy Deposition ◽  
Laser Energy ◽  
Dielectric Materials

Controlled energy deposition and void-like modification inside transparent solids by two-color tightly focused femtosecond laser pulses

2017 ◽  
Vol 110 (16) ◽  
pp. 163903 ◽  
Author(s):  
Fedor Potemkin ◽  
Evgeniy Mareev ◽  
Yulia Bezsudnova ◽  
Victor Platonenko ◽  
Boris Bravy ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Energy Deposition ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses

Research on Periodic Structures Aroused by Femtosecond Laser Irradiation on Single-Crystalline Silicon Wafer

2006 ◽  
Vol 315-316 ◽  
pp. 779-783
Author(s):  
Yan Shen Wang ◽  
Shen Dong ◽  
Yan Qiang Yang ◽  
Ying Chun Liang ◽  
Y.H. Wang
Keyword(s):  
Femtosecond Laser ◽  
Energy Deposition ◽  
Crystalline Silicon ◽  
Periodic Structures ◽  
Single Point ◽  
Femtosecond Laser Irradiation ◽  
Single Shot ◽  
Laser Polarization ◽  
Single Crystalline Silicon ◽  
Light Waves

Ripples in the area of femtosecond laser irradiated discrete points and continuous lines were studied. The characteristics of interference-induced ripples (LSFL) in the area irradiated by single shot were investigated by AFM. During single point irradiation, morphology of the irradiated area changed with energy deposition. Morphologies of the irradiated continuous lines with and without ablated groove inside were both investigated. The intensity of interfered light waves varied in different positions of each energy stripes. Thus the characteristics of ripples in the irradiated area varied with different positions. Ripples much larger than LSFL were found perpendicular to laser polarization.

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