12 June 2015

II-VI Laser adds high-power multi-bar stack laser diode modules

In hall B1 (booth 403) at Laser World of Photonics 2015 in Munich, Germany (22-25 June), II-VI Laser Enterprise GmbH of Zurich, Switzerland - a subsidiary of II-VI Inc of Saxonburg, PA, USA that produces 980nm single-mode pumps, high-power laser diode and vertical-cavity surface-emitting lasers (VCSELs) - will debut its new expanded portfolio of high-power multi-bar stack laser diode modules. This includes a new series of tap-water-cooled stacks for medical, pumping and defense applications, showcasing what is claimed to be the industry's broadest wavelength range of high-power laser diodes enabling multi-kilowatt direct-diode systems.

The Tap Water Stack is a new QCW-style high-reliability stack platform targeting high peak power and pulsed applications especially for the medical and defense markets. Key advantages are the use of industrial water instead of de-ionized water and the hard solder technology for die bonding. The use of industrial tap water not only reduces complexity of design for the cooling circuit, it eliminates the de-ionizer cartridge, as well as water resistivity and pH control that is otherwise required. By employing hard-solder die bonding technology, the new product is especially suitable for long-pulse on/off operation modes in the millisecond regime and not only microsecond operation.

II-VI Laser Enterprise is a subsidiary in the active optical products segment of engineering materials and optoelectronic components provider II-VI Inc that was formerly the business unit Oclaro Switzerland GmbH – a gallium arsenide (GaAs) laser diode manufacturing plant in Zurich and associated product portfolios – acquired in September 2013 from optical communications component maker Oclaro Inc of San Jose, CA, USA.

Now shipping in volume to laser system manufacturers supplying the industrial, semiconductor, automotive and materials processing markets, II-VI Laser Enterprise says that its high-power laser diodes uniquely cover the entire wavelength range of 910-1070nm (in up to seven standard wavelength windows). Output power is 150W and 250W on a micro-channel cooler or up to 120W on what is claimed to be the industry's smallest-footprint passive mini-cooler, enabling scaling of system power up to 40kW and beyond. For pumping applications, more than 100W per bar is available in the 8xx nm wavelength range, and in the eye-safe wavelength band around 1470nm more than 50W has been demonstrated.

See related items:

Oclaro sells Zurich GaAs laser diode business to II-VI for $115m

Tags: II-VI Inc Laser diodes

Visit: www.ii-vi.com/business_units/II-VI-Laser-Enterprise.html