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iWave Diode Laser

Photonics.com
Jul 2007
TOPTICA Photonics AGRequest Info
 
MUNICH, Germany, July 16, 2007 -- Toptica Photonics AG said its new iWave is a diode module in the ultraviolet (UV) and blue wavelength range with narrow linewidth and high power, serving applications such as Raman spectroscopy and Raman microscopy for OEM. More than 40 mW at 405 nm with reduced linewidth is now available in this hands-off operation system.

iWave.jpgUntil now, Raman customers yearning for long coherence length and high-power diode laser systems in the violet or blue wavelength range were forced to decide between 13 mW at 405 nm with superb coherence length (up to 100 m in an external cavity diode setup) and 60 mW at short coherence length (some microns in a standard diode laser setup). If neither option was acceptable, they had to resort to bulky gas lasers, Toptica said.

But now there is a new choice: the iWave, which combines high power and narrow linewidth for applications including the inspection of silicon layers in the semiconductor industry. Toptica said thin silicon layers can be examined by Raman microscopy with great spatial and spectral resolution using the iWave. Beyond Raman, there are many linewidth-sensitive optical setups that have relied on the inherent narrow linewidth of gas lasers which can also benefit from the new system, the company said, such as interferometry and holography.

Whenever the standard coherence length of free-running diodes (100 to 300 µm) is not enough, the iWave offers an improved coherence by factor 10. Moreover, instruments using an acousto-optic deflector (AOD) prefer a laser with narrow linewidth. Because of the wavelength-dependent beam deflection, only narrow linewidth lasers achieve smallest nodes and focus diameters, because broader linewidths create blurred imaging results on the substrate, the company said.

The iWave takes advantage of the company's established iBeam platform and its rugged design, and industrial customers will appreciate its permanent hands-off operation. Both beam pointing stability (10 µrad/K) and beam quality (TEM00, wavefront error <0.05 λ) match the excellent values of the iBeam module. The integrated RS 232 interface enables remote operation, which is a must for OEM customers, Toptica said.

Toptica said it previously launched several laser systems for Raman applications, e.g. the Xtra (300 mW at 785 nm, linewidth <0.001 cm-1), the dfBeam (85 mW at 785 nm, linewidth <0.002 cm-1) and the DL100R (405 nm or 785 nm, linewidth <0.001 cm-1). Now the iWave extends this product line, supporting both existing and new OEM customers.

For more information, visit: www.toptica.com/page/industrial_diode_lasers.php; e-mail: sales@toptica.com

Toptica Photonics AG
Lochhamer Schlag 19
82166 Graefelfing, Munich
Germany
Phone: +49 89-85837-0
Fax: +49 89-85837-200



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