Results 281 to 290 of about 30,090 (307)

Simulation of ultrashort double-pulse laser ablation

Applied Surface Science, 2011
Abstract In this paper, we study the mechanisms of femtosecond double-pulse laser ablation of metals. It was previously shown experimentally that the crater depth monotonically drops when the delay between two successive pulses increases. For delays longer than the time of electron–ion relaxation the crater depth can be even smaller than that ...
Mikhail E. Povarnitsyn, Tatiana E. Itina, Pavel R. Levashov, Konstatntin V. Khishchenko   +3 more
openaire   +1 more source

Ultrashort double pulse laser ablation of metals

Thin Solid Films, 2004
Abstract The peculiarities of laser microablation and plasma re-heating with ultrashort (50 fs–10 ps) double pulses were studied. Three regimes of laser/metal target interaction were observed as a function of double-pulse delay: without any plasma shielding (Δt12≤1 ps), intermediate (1≤Δt12≤10 ps) and with total plasma shielding (from 10 to 250 ps ...
A. Semerok, C. Dutouquet
openaire   +1 more source

Tailoring the air plasma with a double laser pulse

Physics of Plasmas, 2011
We present a comprehensive model of plasma dynamics that enables a detailed understanding of the ways the air plasma induced in the atmosphere in the wake of a laser-induced filament can be controlled by an additional laser pulse. Our model self-consistently integrates plasma-kinetic, Navier−Stokes, electron heat conduction, and electron−vibration ...
M. N. Shneider, A. M. Zheltikov, R. B. Miles   +2 more
openaire   +1 more source

Frequency-doubling pulse compressor for picosecond high-power neodymium laser pulses

Optics Letters, 1992
We have measured as much as an approximately fivefold compression and 240% power conversion when type II frequency doubling is used with 1.2-ps Nd laser pulses and a 1.4-ps predelay is introduced between the e and o pulses at the input of a KDP crystal.
Y, Wang, B, Luther-Davies
openaire   +2 more sources

Spectra of a plasma produced by double laser pulses

Journal of Applied Spectroscopy, 1994
It is shown that using double laser pulses (DLP) rather than single ones to produce a plasma increases the spectral intensity of the plasma formed. This increase can be used to improve the efficiency of laser spectral analysis. The authors investigated spectra of a plasma produced by DLP using a device that makes it possible to obtain two laser pulses ...
M. L. Petukh, A. D. Shirokanov, A. A. Yankovskii   +2 more
openaire   +1 more source

Double-pulsed TEA CO 2 laser

SPIE Proceedings, 1991
ABSTRACT In this paper, a original designed TEA CO2 Laser with simple construction and easy to assemble(disassemble) as its design advantages is introduced. A double continuously adjusting photo—pulseswith O-..' 150,us time separations under a single excitation can be obtained by our laser.
Xiangyen Li, Zhengbang Shi, Ning Sun
openaire   +1 more source

A double pulse ruby laser

Zeitschrift für angewandte Mathematik und Physik ZAMP, 1974
M. S. Petty, O. E. Lanz
openaire   +1 more source

A double-pulse ruby laser

Journal of Applied Spectroscopy, 1977
L. S. Korochkin, S. A. Mikhnov, I. P. Shakhlai   +2 more
openaire   +1 more source

Formation of Oxidized Aluminum Nanopowders by Exposing Aluminum to a Series of Double Laser Pulses in Air

Journal of Applied Spectroscopy, 2021
E S Voropay, A P Zazhogin, Voropay E S
exaly  

Formation of Al2O3 and AIN Nanopowders by Exposing Aluminum to a Series of Double Laser Pulses in Air

Journal of Applied Spectroscopy, 2021
E S Voropay, A P Zazhogin, Voropay E S
exaly