Results 31 to 40 of about 20,183 (237)

Excimer Laser Three-Dimensional Micromachining Based on Image Projection and the Optical Diffraction Effect

open access: yesApplied Sciences, 2018
An excimer laser three-dimensional (3D) micromachining system is proposed based on a mask image projection method and the optical diffraction effect. The effects of optical diffraction on the laser machining rate are evaluated using a hole-arrayed mask ...
Yu-Hsuan Hung   +2 more
doaj   +1 more source

Prediction of Thermal Damage upon Ultrafast Laser Ablation of Metals

open access: yesMolecules, 2021
Ultrafast lasers micromachining results depend on both the processing parameters and the material properties. The obtained thermal effects are negligible if a good combination of processing parameters is chosen.
Liliana Cangueiro   +2 more
doaj   +1 more source

Investigation of ultrafast laser photonic material interactions: challenges for directly written glass photonics [PDF]

open access: yes, 2008
Currently, direct-write waveguide fabrication is probably the most widely studied application of femtosecond laser micromachining in transparent dielectrics.
Ams, M.   +6 more
core   +2 more sources

Experimental and Modeling Study of Liquid-Assisted—Laser Beam Micromachining of Smart Ceramic Materials

open access: yesJournal of Manufacturing and Materials Processing, 2018
Smart ceramic materials are next generation materials with the inherent intelligence to adapt to change in the external environment. These materials are destined to play an essential role in several critical engineering applications.
Mayur Parmar, Sagil James
doaj   +1 more source

Sub-Picosecond Micromachining of Monocrystalline Silicon for Solar Cell Manufacturing

open access: yesApplied Sciences, 2020
In this study a prototype sub-picosecond laser was investigated for cutting and scribing of silicon wafers. The Yb:KYW laser used for this investigation, unlike ultrashort systems used previously, generates pulses of 650 fs, i.e., between the pico and ...
Katarzyna Garasz, Marek Kocik
doaj   +1 more source

Design, fabrication, and testing of silicon microgimbals for super-compact rigid disk drives [PDF]

open access: yes, 1995
This paper documents results related to design optimization, fabrication process refinement, and micron-level static/dynamic testing of silicon micromachined microgimbals that have applications in super-compact computer disk drives as well as many other ...
Hsieh, Wen H.   +4 more
core   +1 more source

Fabrication of (111)-Faced Single-Crystal Diamond Plates by Laser Nucleated Cleaving

open access: yes, 2017
Single-crystal diamond plates with surfaces oriented in a (111) crystal plane are required for high-performance solid-state device platforms ranging from power electronics to quantum information processing architectures.
Bassett, Lee C.   +3 more
core   +1 more source

Artificial dielectric devices for variable polarization compensation at millimeter and submillimeter wavelengths [PDF]

open access: yes, 2003
Variable polarization compensation has been demonstrated at 100 GHz. The device consists of two interlocking V-groove artificial dielectric gratings that produce a birefringence that varies with the separation distance. A maximum retardance of 74/spl deg/
Blaikie, R.J.   +3 more
core   +2 more sources

Laser micromachining of optical microstructures with inclined sidewall profile [PDF]

open access: yes, 2009
Laser micromachining has been proved to be a useful tool for the formation of microstructures in semiconductor and optical materials. It is also widely adopted for dicing of light-emitting diode chips.
Choi, HW, Lai, PT, Wang, XH
core   +1 more source

High performance laser induced plasma assisted ablation by GHz burst mode femtosecond pulses

open access: yesOpto-Electronic Advances
High performance laser micromachining based on the combination of GHz burst mode femtosecond pulses irradiation and laser induced plasma assisted ablation can open a new avenue for high-quality and high-efficiency micromachining of single crystalline ...
Jingbo Yin, Yulong Zhao, Minghui Hong
doaj   +1 more source

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