منابع مشابه
Sub-picosecond UV laser ablation of metals
Laser ablation of Nickel, Copper, Molybdenum, Indium, Tungsten and Gold by short ultraviolet laser pulses (0.5 ps, 248 nm) in vacuum is reported for the first time. For Nickel and Indium, ablation is also studied in air to demonstrate the influence of the ambient atmosphere. Metal ablation in air is significantly less efficient than in vacuum due to redeposition of ablated material. The ablatio...
متن کاملLaser Ablation of Metals
Laser ablation is the process of removing material with very intensive, pulsed laser radiation. It is a technology which gains increasingly greater importance for drilling, eroding, welding, structuring and marking of all kinds of materials. With the advent of ultrashort picoand femtosecond pulses especially, a large number of new processing methods were developed. A deeper understanding of the...
متن کاملPicosecond Laser Processing – Material Removal Rates of Metals
A picosecond laser has been used to establish the material removal rate of metals. Varied processing parameters include laser power, pulse frequency and scanning velocity. The laser beam was manipulated using a galvanometric scan head with a 100 mm focusing optic. Maximum power of the laser in the IR was 2 W and 700 mW in the UV. Scanning velocities were varied between 100 to 800 mm/s. Material...
متن کاملEjection Regimes in Picosecond Laser-Induced Forward Transfer of Metals
Ralph Pohl, Claas Willem Visser, Gert-Willem Römer, Detlef Lohse, Chao Sun, and Bert Huis in ’t Veld Chair of Applied Laser Technology, Faculty of Engineering Technology, University of Twente, Netherlands Physics of Fluids Group, Faculty of Science and Technology, J. M. Burgers Centre for Fluid Dynamics, University of Twente, Netherlands (Received 18 July 2014; revised manuscript received 21 Oc...
متن کاملShort-pulse UV laser ablation of solid and liquid metals: indium
Laser-ablation experiments on solid (T = 300 K) and liquid (T = 600 K) indium are reported. The ablation was performed under high vacuum conditions with UV laser pulses at 248 nm and pulse durations of 15 ns and 0.5 ps. The ablated neutral indium atoms were resonantly ionized with a second laser pulse 28 mm above the sample surface and detected in a time-of-flight mass spectrometer. The ablatio...
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ژورنال
عنوان ژورنال: Applied Physics A: Materials Science & Processing
سال: 1995
ISSN: 0947-8396,1432-0630
DOI: 10.1007/s003390050160