Jenoptik releases F-Theta fused-silica lenses for laser material processing

Jenoptik's Optical Systems Division, Jena, Germany,  will be demonstrating new F-Theta lenses for high-power laser applications at the LASER World of Photonics from May 23 to 26, 2011.

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Fiber lasers and other types of lasers will output increasing laser power, therefore the requirements on equipment for laser material processing are becoming more stringent. The Optics Business Unit makes its first presentation of a new series of fused-silica F-Theta lenses that work at wavelengths of 266 nm and 355 nm. These lenses combine the benefits of standard F-Theta lenses, yet also provide a distinctly higher damage threshold.

The new 355 nm F-Theta Lens especially provides optimized performance in high-power laser applications. Of diffraction-limited design, the lens features high spot uniformity over the entire scan range. Its coatings which have been specifically optimized for fused-silica optics warrant low absorption.

Two more F-Theta fused-silica lenses will be available for operation at the wavelength of 1070 nm and with different focal lengths (f = 160 nm and f = 255 nm) beginning in the 4Q11. These diffraction-limited objective lenses are intended for laser powers up to 2 kW at 1070 nm. An additional choice of F-Theta fused-silica lenses is planned for use at different wavelengths in the UV, VIS and NIR ranges to complement the Unit’s range of products.


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