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JDSU diode laser produces twice the power

15 Aug 2007

New chip technology is said to provide the highest available 808 nm brightness among single-emitter fiber-coupled diode sources.

JDSU's new laser diodes offer 4 W of power at 808 nm, which the company claims is twice the power of previous offerings, at a lower cost. A 4.5 W version is also available at 812 nm for applications with broader wavelength tolerances, such as medical and dental uses.

JDSU says that its 2495-L3 series has exploited the component maker's telecommunications experience to create a new laser-diode source. "The technology is an advancement of previous JDSU technologies that have allowed us to produce a laser diode chip with twice the reliable power and brightness," said Noel Bilodeau of JDSU.

"We are also able to leverage lower production costs in China, coupled with parts commonality of our 9xx telecom and industrial L3 products produced in very high volumes," she continued. "With the exception of the chip, all parts are the same as used in our 4800 series telecom product line."

The new diode laser can be used in industrial applications to optically pump Nd-doped material to generate a 1064 nm output, which is used directly or converted to green and UV laser light through harmonic conversion. These wavelengths are used for material processing applications such as scribing or cutting semiconductor materials.

The dental market for soft tissue procedures is said to be another key application, where diseased gum tissue can be more accurately treated without disturbing surrounding healthy tissue. In bio-stimulation treatments, JDSU says that the new source can provide localized heat to stimulate damaged muscle tissue.

Several 2495-L3 devices with 4 W fiber output could also be bundled together to provide the same power output as a conventional bar source, according to the company. This would provide higher power per single fiber, and the distributed architecture would prevent failure arising from a single point.

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