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Related Categories: Laser Debonding | M Squared

Gallium Nitride

Photonik Feb2014.pdf

Photonik Feb2014.pdf

…To this depth the applied laser
energy converts the gallium nitride into
metallic gallium, which becomes liquid at
about 30°C. The sapphire wafer is thus
easily removed from the adjacent layer of
metallic gallium which was formed during
the laser lift-off process. The…

CMM 11.5.indd

CMM 11.5.indd

…display processing benefits from enabling excimer laser technologies. Like their large counterparts, micro-LEDs are obtained by growing gallium nitride (GaN) films on sapphire wafers. In order to reduce the device height and increase the device efficiency, the GaN-based micro-LED layers are…

Photonics Spectra - July 2017

Photonics Spectra - July 2017

…around somewhat, but larger shifts require completely different materials. For example, blue and green lasers are gallium nitride based while red ones are built using aluminum gallium indium phosphide, Neukum said. The infrared is also an area of interest to semiconductor laser makers, primarily…

LLO WavelengthAdvantage.pdf

LLO WavelengthAdvantage.pdf

…the GaN into metallic gallium. Due to these requirements, the excimer laser, especially the KrF excimer laser operating at 248 nm, is the first choice for LLO. 248nm line sapphire wafer separation The figure below is a white light interferometry image of a gallium nitride (GaN) epi-wafer after LLO…