Results 21 to 30 of about 20,511 (233)

Laser Processing of Transparent Wafers with a AlGaN/GaN Heterostructures and High-Electron Mobility Devices on a Backside

open access: yesMicromachines, 2021
Sapphire and silicon carbide substrates are used for growth of the III-N group heterostructures to obtain the electronic devices for high power and high frequency applications.
Simonas Indrišiūnas   +3 more
doaj   +1 more source

Laser Micromachining of Glass, Silicon, and Ceramics

open access: yesAdvances in Materials Science and Engineering, 2015
A brief review is focused on laser micromachining of materials. Micromachining of materials is highly widespread method used in many industries, including semiconductors, electronic, medical, and automotive industries, communication, and aerospace.
L. Rihakova, H. Chmelickova
doaj   +1 more source

Effects of closed immersion filtered water flow velocity on the ablation threshold of bisphenol A polycarbonate during excimer laser machining [PDF]

open access: yes, 2010
A closed flowing thick film filtered water immersion technique ensures a controlled geometry for both the optical interfaces of the flowing liquid film and allows repeatable control of flow-rate during machining.
Dowding, Colin   +2 more
core   +1 more source

Femtosecond laser induced damage threshold and incubation in l-threonine aminoacid crystal

open access: yesOptical Materials: X, 2023
l-threonine aminoacid crystals exhibit high second-order optical nonlinearities that can be exploited for second harmonic generation, optical parametric amplification, and optical parametric oscillation.
L.K. Nolasco   +5 more
doaj   +1 more source

Ablation debris control by means of closed thick film filtered water immersion [PDF]

open access: yes, 2010
The performance of laser ablation generated debris control by means of open immersion techniques have been shown to be limited by flow surface ripple effects on the beam and the action of ablation plume pressure loss by splashing of the immersion fluid ...
Bickel W. S.   +8 more
core   +1 more source

Micromachining of AlN and Al2O3 Using Fiber Laser

open access: yesMicromachines, 2014
We report on high precision high speed micromachining of Al2O3 and AlN using pulsed near infrared fiber laser. Ablation thresholds are determined to be 30 J/cm2 for alumina and 18 J/cm2 for aluminum nitride.
Florian Preusch   +2 more
doaj   +1 more source

Micromachining of Invar Foils with GHz, MHz and kHz Femtosecond Burst Modes

open access: yesMicromachines, 2020
In this work, a burst mode laser is used for micromachining of 20 µm–250 µm thick Invar (Fe64/Ni36) foils. Holes were drilled by firing multiple pulses transversely onto the sample without moving the beam (percussion drilling).
Simas Butkus   +4 more
doaj   +1 more source

Laser micromachining of diamond: A viable photonic and optofluidic platform [PDF]

open access: yesEPJ Web of Conferences, 2022
We describe how the ultrafast laser micromachining technique applied with different writing methods can be used for the creation of various building blocks essential for the realization of a photonic and optofluidic diamond platform.
Jedrkiewicz Ottavia   +6 more
doaj   +1 more source

High resolution powder blast micromachining [PDF]

open access: yes, 2000
Powder blasting, or Abrasive Jet Machining (AJM), is a technique in which a particle jet is directed towards a target for mechanical material removal. It is a fast, cheap and accurate directional etch technique for brittle materials like glass, silicon ...
Berenschot, J.W.   +3 more
core   +3 more sources

Ion beam micromachining of integrated optics components [PDF]

open access: yes, 1973
Thin film integrated optics components such as light guides, modulators, directional couplers, and polarizers demand high quality edge smoothness and high resolution pattern formation in dimensions down to submicrometer size.
Garmire, E.   +4 more
core   +1 more source

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