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Large Aperture F-theta Lens Now Available at SILL Optics

SILL Optics has started providing F-theta lens. The new model S4LFT2500/328 is capable of controlling multi- kilowatt high power lasers.

Image of Large F Theta Lens

Designed to be the first 30 mm aperture high power lens created with fused silica with low absorption anti reflection coatings, this lens minimizes internal absorption within the bulk material and coating. It also reduces thermal shift within the lens that causes variation in energy density and spot size, leading to unstable process conditions.

According to Gunter Toesko of SILL Optics, with company’s increasing expertise in lens development, a new lens has been designed to have high performance that will remain stable even at high level of laser power.

With a focal length of 500 mm, the S4LFT2500/328 has been optimized for 1064 nm but can be effectively used from 1030 to 1090 nm. The lens generates a maximum scan field size measuring 280x280 mm. It can hold up to a 30 mm input beam diameter. The energy density on the scan mirror system will be reduced by the larger beam diameter. The performance of the lens is ideal for imaging single mode fiber and disc lasers having Gaussian intensity profiles of M2= 1.X.
Sill Optics and Couriertronics will participate at Photonics West, which is scheduled to take place between Feb 2 and 7, 2013 at The Moscone Center in San Francisco, California. Products such as beam expanders, F theta lenses, and telecentric imaging lenses will be exhibited.

According to Chris Dehnert of Couriertronics, the laser optics designers will be highlighted at Photonics West, where its application will be clearly demonstrated.

Source: http://www.silloptics.de/

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G.P. Thomas

Written by

G.P. Thomas

Gary graduated from the University of Manchester with a first-class honours degree in Geochemistry and a Masters in Earth Sciences. After working in the Australian mining industry, Gary decided to hang up his geology boots and turn his hand to writing. When he isn't developing topical and informative content, Gary can usually be found playing his beloved guitar, or watching Aston Villa FC snatch defeat from the jaws of victory.

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