scholarly journals Time-resolved imaging of processes associated with exit-surface damage growth in fused silica following exposure to nanosecond laser pulses

2013 ◽  
Vol 21 (4) ◽  
pp. 4875 ◽  
Author(s):  
Stavros G. Demos ◽  
Rajesh N. Raman ◽  
Raluca A. Negres
Keyword(s):  
Surface Damage ◽  
Laser Pulses ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Damage Growth ◽  
Time Resolved ◽  
Exit Surface ◽  
Nanosecond Laser Pulses ◽  
Time Resolved Imaging

Time-resolved study of the mechanical response of tissue phantoms to nanosecond laser pulses

2011 ◽  
Vol 16 (11) ◽  
pp. 115001 ◽  
Author(s):  
Francisco G. Pérez-Gutiérrez ◽  
Santiago Camacho-López ◽  
Guillermo Aguilar
Keyword(s):  
Mechanical Response ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Time Resolved ◽  
Tissue Phantoms ◽  
Nanosecond Laser Pulses

Kinetics of ejected particles during breakdown in fused silica by nanosecond laser pulses

2011 ◽  
Vol 98 (5) ◽  
pp. 051901 ◽  
Author(s):  
Rajesh N. Raman ◽  
Raluca A. Negres ◽  
Stavros G. Demos
Keyword(s):  
Laser Pulses ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses ◽  
Kinetics Of

scholarly journals Instrumentation for X-Ray Diagnostics of Plasmas*

1974 ◽  
Vol 18 ◽  
pp. 26-61 ◽  
Author(s):  
C. E. Violet
Keyword(s):  
Diagnostic Method ◽  
State Of The Art ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
X Rays ◽  
Plasma Parameters ◽  
Source Imaging ◽  
Time Resolved ◽  
X Ray ◽  
Nanosecond Laser Pulses

AbstractMeasurements of x-rays emitted by hot plasmas provide a powerful diagnostic method of determining important plasma parameters and suggest certain types of plasmas as possibly useful x-ray sources. Instrumentation to accomplish these measurements for various types of plasmas are reviewed. State-of-the-art x-ray spectrometers, calorimeters, and source-imaging devices, designed especially for plasmas generated by focused, nanosecond laser pulses are described. Possibilities of time-resolved measurements on such short-lived plasmas are discussed.

Laser Ablation-Induced Plasma Characteristics in Optical Near-Field

2007 ◽  
Author(s):  
David J. Hwang ◽  
Hojeong Jeon ◽  
Costas P. Grigoropoulos
Keyword(s):  
Near Infrared ◽  
Near Field ◽  
Laser Pulses ◽  
Thin Metal Film ◽  
Nanosecond Laser ◽  
Time Resolved ◽  
Breakdown Spectroscopy ◽  
Laser Induced Breakdown ◽  
Nanosecond Laser Pulses ◽  
Plasma Characteristics

In this study, detailed characteristics of the optical near-field based ablation-induced plasma are investigated. A Cr thin metal film samples are ablated using visible and near infrared nanosecond laser pulses coupled through an optical near-field fiber probe. The ablated plasma evolution is visualized through time-resolved emission imaging and further analyzed via spectral measurement. Unveiled qualitative differences in optical near-field ablation configuration are discussed in comparison with optical far-field ablation. The measured results support implementation of laser-induced breakdown spectroscopy based on optical near-field ablation.

Fracture of fused silica with 351 nm laser-generated surface cracks

1999 ◽  
Vol 14 (2) ◽  
pp. 597-605 ◽  
Author(s):  
F. Dahmani ◽  
J. C. Lambropoulos ◽  
A. W. Schmid ◽  
S. Papernov ◽  
S. J. Burns
Keyword(s):  
Crack Depth ◽  
Damage Threshold ◽  
Surface Damage ◽  
Laser Pulses ◽  
Fused Silica ◽  
Material Strength ◽  
Failure Strength ◽  
Exit Surface ◽  
Four Point Bending ◽  
Underlying Basis

Laser-induced-surface-flaw experiments on fused silica at 351 nm and 500 ps pulse duration are reported here. Specimens with surface flaws produced at a measured exit-surface damage threshold fluence of Fexit/th = 10 J/cm2 were irradiated at a constant fluence of FL = 1.8 × Fexit/th by different numbers of laser pulses, N = 110 to 520. Micrograph observations show that (i) the produced cracks have a semielliptical shape and (ii) the material strength predictions based on the radial crack depth (normal to the surface) instead of the crack surface length (parallel to the surface) are in good agreement with measured strengths obtained using a four-point bending fixture. The underlying basis of conventional crack analysis is first examined critically and is argued to be deficient in the way the failure strength for the cracks is related to the characteristic parameters of crack geometry. In general, it is necessary to incorporate a residual term into the failure strength formulation. The crack depth and the failure strength are found to increase and decrease with the number of laser pulses, respectively.

Identification of the formation phases of filamentary damage induced by nanosecond laser pulses in bulk fused silica

2015 ◽  
Vol 107 (11) ◽  
pp. 111101 ◽  
Author(s):  
Chao Shen ◽  
Maxime Chambonneau ◽  
Xiang'ai Cheng ◽  
Zhongjie Xu ◽  
Tian Jiang
Keyword(s):  
Laser Pulses ◽  
Fused Silica ◽  
Nanosecond Laser ◽  
Nanosecond Laser Pulses

Time resolved spectra of optical and electrical transient response induced by nanosecond laser pulses in amorphous AgInSbTe films

Optik ◽  
2014 ◽  
Vol 125 (20) ◽  
pp. 5943-5946 ◽  
Author(s):  
Fengxiao Zhai ◽  
Guangfei Liang ◽  
Yang Wang ◽  
Yiqun Wu ◽  
Kun Yang
Keyword(s):  
Transient Response ◽  
Laser Pulses ◽  
Nanosecond Laser ◽  
Time Resolved ◽  
Nanosecond Laser Pulses
Sign in / Sign up

Export Citation Format

Share Document