Novel Devices ♦ news digest
beam deposition and a plasma etch system for use on novel types of semiconductor laser production.
Nanoplus produces semiconductor lasers over several wavelength ranges (some exclusively) for many different customers with a wide range of applications.
The Ionfab300 Plus ion beam deposition is a multi- batch cassette loading tool allowing many devices to be produced for several applications and various customers in one load. The Ionfab300 Plus will be used for laser bar facet coating with anti-reflective and high-reflection multilayers, and the PlasmaPro System100 RIE system will be used for GaAs and InP compound etching.
David Pearson, OIPT’s Senior Ion Beam Technologist, comments, “Our Ionfab optical coating tools are becoming the tools of choice for many types of precision optical coatings worldwide, in particular in laser applications.”
“Nanoplus is an internationally leading supplier of single mode DFB lasers for sensing, metrology, spectroscopy and telecom applications. We even have one of our sensors on NASA’s Mars Curiosity Rover’, say sAlfred Forchel, founder of Nanoplus, “We chose Oxford Instruments systems for their versatility, superior process capabilities and excellent customer support.”
Frazer Anderson, Business Group Director at Oxford Instruments concludes, “Our tools offer the ideal platform for production as well as research & development in many new application areas, and Laser Bar facet coating is just one of these. Our excellent process applications team and global service support ensure that our customers are supported in every respect and can count on their Oxford Instruments systems for maximum uptime and reliability.”
Schematic showing how QDEF works Novel Devices
Nanosys ships 2000kg QD devices for displays
The firm has shipped its QDEF devices to LCD manufacturers to bring perfect colour and high energy efficiency to millions of devices
Nanosys has passed a major production milestone at its recently opened 60,000 square foot manufacturing facility in Milpitas, California.
Unlike conventional phosphor technologies such as YAG that emit with a fixed spectrum, quantum dots can actually convert light to nearly any colour in the visible spectrum.
Pumped with a blue source, such as a GaN LED, they can be made to emit at any wavelength beyond the pump source wavelength with very high efficiency (over 90 percent quantum yield) and with very narrow spectral distribution (only 30 - 40nm FWHM.)
The real magic of quantum dots is in the ability to tune the colour output of the dots, by carefully controlling the size of the crystals as they are synthesised so that their spectral peak output can be controlled within 2nm to nearly any visible wavelength.
August/September 2013
www.compoundsemiconductor.net 135
A shipment of Nanosys Quantum Dot Concentrate bound for a new generation of consumer devices which will provide brighter and more colorful displays this fall
The shipment of more than 2000kg of Nanosys Quantum Dot Concentrate, used to make Quantum Dot Enhancement Film (QDEF), represents a significant step forward in the adoption of quantum dot technology for displays.
QDEF utilises the light emitting properties of quantum dots to create an ideal backlight for LCDs, which is one of the most critical factors in the colour and efficiency performance of LCDs.
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