Femtosecond and nanosecond laser damage thresholds of doped and undoped triazenepolymer thin films

2007 ◽  
Vol 253 (19) ◽  
pp. 7787-7791 ◽  
Author(s):  
J. Bonse ◽  
J. Solis ◽  
L. Urech ◽  
T. Lippert ◽  
A. Wokaun
Keyword(s):  
Thin Films ◽  
Laser Damage ◽  
Nanosecond Laser

scholarly journals Laser damage of silica and hafnia thin films made with different deposition technologies

2007 ◽  
Author(s):  
Laurent Gallais ◽  
Jérémie Capoulade ◽  
Jean-Yves Natoli ◽  
Mireille Commandré ◽  
Michel Cathelinaud ◽  
...  
Keyword(s):  
Thin Films ◽  
Laser Damage

Fabrication of Ni–Al thin films by the pulsed laser deposition technique

1992 ◽  
Vol 7 (10) ◽  
pp. 2639-2642 ◽  
Author(s):  
R.K. Singh ◽  
Deepika Bhattacharya ◽  
S. Sharan ◽  
P. Tiwari ◽  
J. Narayan
Keyword(s):  
Electron Microscopy ◽  
Thin Films ◽  
Pulsed Laser Deposition ◽  
Rutherford Backscattering Spectrometry ◽  
Pulsed Laser ◽  
High Energy ◽  
Laser Deposition ◽  
Nanosecond Laser ◽  
X Ray ◽  
Target Composition

We have fabricated Ni3Al and NiAl thin films on different substrates by the pulsed laser deposition (PLD) technique. A high energy nanosecond laser beam was directed onto Ni–Al (NiAl, Ni3Al) targets, and the evaporated material was deposited onto substrates placed parallel to the target. The substrate temperature was varied between 300 and 400 °C, and the substrate-target distance was maintained at approximately 5 cm. The films were analyzed using scanning electron microscopy, transmission electron microscopy, x-ray diffraction, and Rutherford backscattering spectrometry. At energy densities slightly above the evaporation threshold, a slight enrichment of Al was observed, while at higher energy densities the film stoichiometry was close (<5%) to the target composition. Barring a few particles, the surface of the films exhibited a smooth morphology. X-ray and TEM results corroborated the formation of Ni3Al and NiAl films from similar target compositions. These films were characterized by small randomly oriented grains with grain size varying between 200 and 400 Å.

LASER DAMAGE STUDY OF THIN FILMS

1967 ◽  
Author(s):  
Arthur F. Turner ◽  
Stanley J. Refermat
Keyword(s):  
Thin Films ◽  
Laser Damage ◽  
Damage Study

Dynamic process of nanosecond laser damage of fused silica

2013 ◽  
Vol 25 (11) ◽  
pp. 2882-2886
Author(s):  
邱荣 Qiu Rong ◽  
王俊波 Wang Junbo ◽  
任欢 Ren Huan ◽  
周强 Zhou Qiang ◽  
田润妮 Tian Runni ◽  
...  
Keyword(s):  
Dynamic Process ◽  
Fused Silica ◽  
Laser Damage ◽  
Nanosecond Laser

Modeling of Temperature Cycles Induced by Pico- and Nanosecond Laser Pulses in Zinc Oxide and Molybdenum Thin Films

2015 ◽  
Vol 138 (3) ◽  
Author(s):  
D. Scorticati ◽  
G. R. B. E. Römer ◽  
A. J. Huis in't Veld ◽  
D. F. de Lange
Keyword(s):  
Thin Films ◽  
Heat Treatment ◽  
Zinc Oxide ◽  
Pulse Repetition Frequency ◽  
Laser Pulses ◽  
Temperature Fields ◽  
Nanosecond Laser ◽  
Pulsed Lasers ◽  
Temperature Cycles ◽  
Nanosecond Laser Pulses

The aim of this paper is to study the benefits of applying ultrashort pulsed lasers over nanosecond pulsed lasers for selective (i.e., superficial) heat treatment of materials in general and for selective heat treatment of thin films in particular. To this end, a background of the physics that govern the absorption of light and subsequent diffusion of heat in semiconductor and metallic materials is provided, when exposed to picosecond or nanosecond laser pulses, with a fluence below the ablation threshold. A numerical model was implemented using a commercial finite-element modeling package, to simulate the temperature fields in thin films induced by laser pulses. The results of the simulations provide insight in the temperature cycles and corresponding timescales, as function of the processing parameters, such as fluence, pulse duration, pulse repetition frequency, and laser wavelength. Numerical simulations were run for thin films of molybdenum (Mo) and zinc oxide (ZnO) on a glass substrate, which are materials commonly adopted as (back and front) electrodes in thin film solar cells.

Optical limiting properties of BODIPY dyes substituted with styryl or vinylene groups on the nanosecond timescale

2019 ◽  
Vol 23 (07n08) ◽  
pp. 701-717 ◽  
Author(s):  
Nobuhle Ndebele ◽  
Zweli Hlatshwayo ◽  
Bokolombe P. Ngoy ◽  
Gugu Kubheka ◽  
John Mack ◽  
...  
Keyword(s):  
Thin Films ◽  
Absorption Coefficient ◽  
Laser Pulses ◽  
Optical Limiting ◽  
Nanosecond Laser ◽  
Third Order ◽  
The Third ◽  
Nanosecond Laser Pulses ◽  
532 Nm ◽  
Order Susceptibility

The results of recent studies on the optical limiting properties of BODIPY dyes at 532 and 1064 nm are described and compared. The optical limiting properties of novel 1,7-dimethyl-3,5-di-4-dihydroxyborylstyryl- and 3,5,7-tristyryl-1-methyl-BODIPY dyes were studied in CH2Cl2 and C6H6 and polystyrene thin films using the open aperture Z-scan technique at 532 nm with nanosecond laser pulses to provide an example of how the effective nonlinear absorption coefficient, the third order susceptibility, hyperpolarizability and limiting thresholds can be calculated.

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