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BluGlass demonstrates working laser diodes

Manufacturing News

Semiconductor technology developer BluGlass has successfully demonstrated the manufacture of working tunnel junction laser diodes in a world-first proof of concept utilising its proprietary RPCVD technology.

The company is developing equipment for making laser diodes, a type of semiconductor, based on its breakthrough Remote Plasma Chemical Vapour Deposition (RPCVD) technology.

The technology utilises advanced materials such as gallium nitride and indium gallium nitride to produce diodes which emit intense laser light, or for use in high brightness LEDs.

BluGlass said its laser diode prototypes had demonstrated good lasing behaviour and enabled high powered, efficient commercial applications such as 3D printing and industrial welding.
Bluglass executive chair James Walker said: “This is an important validation of the potential of our unique RPCVD and tunnel junction technologies.

“This achievement is a testament to the efforts of our leading-edge team in developing a range of innovative laser diode products, including this world-fiurst demonstration of dual-n-wave lasers.

“This has the potential to transform how lasers are made to help bring GaN lasers into a new era.”

GaN lasers are currently limited by optical and resistive losses in layers needed to create an electrical circuit, which lead to low power conversion efficiencies and the loss of energy as heat.

BluGlass’ technology grows the semiconductors in a low temperature and low hydrogen environment which eliminates the need for these layers.

The RPCVD process replaces the the resistive layers with a novel tunnel junction, allowing for significantly improves laser diode performance.

Walker said: “While these novel lasers have significant development required before the launch of future RPCVD enhanced products, our significantly advanced standard laser diode product development continues to focus on solving reliability and improving our downstream production ahead of launching commercial products to waiting customers.”

Picture: BluGlass RPCVD semiconductor wafer manufacturing unit, BLG-300

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