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  • Fiber-Coupled Pearl, 808-nm Laser
Jun 2007
nLIGHT Corp.Request Info
VANCOUVER, Wash., June 19, 2007 -- High-power semiconductor laser maker nLight is launching Pearl, part of its high-power, fiber-coupled product line, at LASER 2007. World of Photonics this week in Munich, Germany. The company is also featuring an 808-nm laser, part of its CS product line, at the biannual trade show.

Pearl.jpgnLIGHT said it is redefining the high-power fiber-coupled module market with the formal introduction of its new Pearl product platform. The architecture uses multiple high-power AuSn (gold-tin) -bonded, facet-passivated, high-efficiency single emitters that are spatially combined into a single fiber core.

Standard modules are now available up to 50 W at 808 nm and 5 W at 639 nm with detachable antireflective-coated 0.22 numerical aperture 400-µm-core fibers, the company said. Samples at 88X and 9XX nm are also offered. Applications for the product range from pumping multiple-gain media (including diode-pumped solid-state lasers, disk lasers, fiber lasers) to direct diode-material interactions (including annealing, welding, cutting, surgical application) to laser-based displays.

Nlight said Pearl is highly differentiated from preexisting products, most notably in overall electrical-to-optical efficiency, which is typically in excess of 50 percent. Equally differentiating is the extreme reliability from the use of single emitters. Another key feature is low current operation enabled by configuring the single emitters in series. The 50-W, 808-nm modules typically operate at 6 A of current with a compliance voltage of 20 V. The 5-W, 639-nm modules typically operate at 1.3 A of current with a compliance voltage of 21 V. Standard wavelength tolerances are +/- 3 nm (808 nm) and +/- 4 nm (639 nm) with spectral widths less than 3 nm.

The product also draws on nLight’s proprietary nXLT diode protection technology for its facet passivation to ensure maximum lifetime and high-brightness operation. Coupled with its compact size and plug-and-play electrical connections, Pearl provides the perfect solution for applications that require efficient and reliable fiber-coupled delivery of high-brightness optical power, the company said.

The other product its highlighting at LASER 2007 eliminates the need for customers to make the tradeoff between high power and high brightness when it comes to selecting conduction-cooled laser bars, nLight said.

By combining its proprietary nXLT (eXtended Life Technology) laser chips with AuSn (gold-tin) solder on an expansion-matched submount, nLight said it has created a product that achieves both high power with high brightness -- a 30 percent fill-factor bar rated at 60 W on an industry-standard conduction-cooled CS package.

nLight said is able to offer a significant increase in power and brightness while increasing lifetime for CW (continuous wave), pulsed, and high-temperature applications. This device will serve a variety of applications in markets including diode-pumped solid-state laser pumping, industrial, medical and defense, the company said. Specific wavelengths ranging from 790–830 nm can be customized for OEM applications.

“High power with high brightness will enable competitive advantages for our customers with both CW and pulsed laser needs,” said Rob Martinsen, vice president of product engineering. “This is just another example of the benefits that our nXLT diode protection and hard-solder packaging technologies bring to the customer.”

Each device will have 19 x 150-µm emitters on 500-µm spacing, conforming to industry standards. The new CS 60-W devices can be integrated with a wide variety of existing micro-optics. Typical operating currents are around 60 A, with a compliance voltage less than 2 V, and TE polarized light. As an added feature, nLight can include an antireflective-coated cylinder lens to collimate the fast-axis, the company said.

nLight products can be seen at LASER 2007.World of Photonics (hall B3, booth 358) June 18-21. For more information visit:; e-mail:

nLight Corp.
5408 NE 88th St., Bldg. E
Vancouver, WA 98665
Phone: (866) 202-4488
Fax: (360) 546-1960


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A two-electrode device with an anode and a cathode that passes current in only one direction. It may be designed as an electron tube or as a semiconductor device.
Tiny (less than 2 mm in diameter) lenses, beamsplitters and other optical components used, for example, in endoscopes or microscopes or to focus light from semiconductor lasers and optical fibers.
The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
With respect to a lens, the reciprocal of its focal length. The term power, as applied to a telescope or microscope, often is used as an abbreviation for magnifying power.
pulsed laser
A laser that emits energy in a series of short bursts or pulses and that remains inactive between each burst or pulse. The frequency of the pulses is termed the pulse-repetition frequency.
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