The importance of wavelength for tight temperature control during µ-laser assisted machining

Journal article


Dennis A, Goel, S., Al-Sayegh, R. and Neill W. O. (2019). The importance of wavelength for tight temperature control during µ-laser assisted machining . Journal of Micromanufacturing. https://doi.org/10.1177/2516598420917866
AuthorsDennis A, Goel, S., Al-Sayegh, R. and Neill W. O.
Abstract

The area of single point diamond turning of brittle materials like semiconductors and ceramics is significantly benefitted by incorporation of laser assistance. In a new developmental technology that is now recognised as micro-Laser Assisted Machining (µ-LAM), a laser is shone through a diamond tool to soften the high pressure phase transformed ductile machining phases that in turn allows thermal softening and thereby enables a higher material removal rate during ductile-mode machining. One of the lasers currently used in µ-LAM is the Nd:YAG laser operating at 100 W (continuous wave) at the wavelength of 1064 nm. Although, this configuration has worked to the benefit of the technology, here we report futuristic developments that will significantly enhance temperature control by selecting a laser wavelength according to the material being machined, allowing tuneable machining properties. The concept is illustrated with sample calculations for µ-LAM of silicon, and it appears to offer better target temperatures, thus enhancing the performance of the µ-LAM process.

Year2019
JournalJournal of Micromanufacturing
PublisherSage
Digital Object Identifier (DOI)https://doi.org/10.1177/2516598420917866
Web address (URL)DOI: 10.1177/2516598420917866
Publication dates
Print22 Mar 2020
Publication process dates
Deposited23 Dec 2019
Accepted author manuscript
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File Access Level
Open
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