Osram Opto Semiconductors offers red lasers for 640 to 660 nm:

Visible advances

Source: OSRAM

MUNICH - Osram Opto Semiconductors has added red laser diodes with an optical output of 0.5 W and a wavelength of 650 nm to its range of high-power diode lasers. This means that for the first time laser structures have been produced in the new InGaAlP material system (Indium-Gallium-Aluminium-Phosphite). Modifications to the semiconductor processes and to the design of the chip and the layer structure finally led to the development of these high-power laser diodes in the visible red range.

What’s more, the power of existing products in the near infra-red range with standard wavelengths of 808, 940 and 980 nm was increased by 25%. The optical output for these products is now 2 W. Depending on which of the many applications the products are intended for, there are different package options for all the high-power laser diodes, such as open packages for OEMs, enclosed versions with integrated optics for beam shaping and similar designs for coupling into optical fibers.

High-power laser diodes with a wavelength of 650 nm are used in medicine, for example for photodynamic cancer therapy, in ophthalmology and in skin treatment. IR laser diodes in standard wavelengths are used as efficient sources for pumping solid-state lasers and are a cost-effective alternative to conventional flash lamps. They are suitable for direct material processing if a moderate beam quality, compact dimensions, a high level of efficiency and ease of maintenance are required. Applications such as computer-to-plate processes in printing and power transmission and various lighting and medicine applications round off the spectrum.

A new area of application will open up in the field of laser projection. Red laser diodes in the visible range are a first step in this direction. However, it will not be possible to produce colour pictures until visible laser sources with high outputs in blue and green are also available. A team at Osram Opto Semiconductors has been working intensively on this project for several years.

About Osram Opto Semiconductors
Osram Opto Semiconductors GmbH, Regensburg, is a wholly owned subsidiary of Osram, one of the world’s three largest lamp manufacturers, and offers its customers a range of solutions based on semiconductor technology for lighting, sensor and visualisation applications. The company operates facilities in Regensburg (Germany), San José (USA) and Penang (Malaysia). In the 2002 fiscal year (to the end of September) its 3370 employees produced sales totalling EURO 309 million.

Further information is available at www.osram-os.com.

Osram Opto Semiconductors offers red lasers for 640 to 660 nm:
Visible advances
Osram Opto Semiconductors has added red laser diodes with an optical output of 0.5 W and a wavelength of 650 nm to its range of high-power diode lasers. This means that for the first time laser structures have been produced in the new InGaAlP material system (Indium-Gallium-Aluminium-Phosphite). Modifications to the semiconductor processes and to the design of the chip and the layer structure finally led to the development of these high-power laser diodes in the visible red range.

Press contact:

OSRAM

Marion Reichl
Tel: +49-941-850-1693
Fax: +49-941-850-4441693
Email: marion.reichl@osram-os.com