Wednesday, 1 June 2016

Advanced IR Laser filters for Nd:YAG, Holmium:YAG and Erbium:YAG

Brinell Laser protection eyewear shop

There are important features which need to be built into the new generation of optical filters used in high powered medical lasers such as Nd:YAG, Holmium:YAG and Erbium:YAG. These are low absorption, low thermal drift and optical stability in all modes of operation.

The technology for creating these new thin film infrared filters has been developed over the last nine years. We have moved away from distinctive alternating layers of different materials and moved into blended structures of environmentally clean and inert dielectric materials. These are deposited using a high energy Pulse Plasma Beam Sputtering process (PPBS). The method also allows us to produce optimised optical characteristics using advanced optical design software.

The filters exhibit fully dense and amorphous compositions and can maintain optical stability in extreme environmental conditions. The picture below shows a fully dense bragg mirror with a Laser Damage Threshold more than 10 times that of the best Plasma assisted evaporated coating. The mirror survived a NdYAG beam of more than 106 Joules/square meter.

High durability advanced thin film interference filters with low absorbing design to work with high powered laser sources. Customer specified optical characteristics for blocking and transmission bands. 
-optically stable/low thermal shift in CWL
-low absorption
-no ‘Burn out’
-operation at high temperature

Brinell Vision filters use sputtered thin film technology to block unwanted radiation rather than layers of cemented absorption glass (as used in traditional filters). This allows the filter to operate at high temperatures without optical drift or complete breakdown.
·         Nd:YAG, Holmium:YAG and Erbium:YAG
·         Laser band pass filters for radiation clean-up
·         Laser protection filters
·         Laser blocking filters with pilot beam
·         Laser blocking filters with High VLT

For more information contact:

        Brinell 2080nm Holmium 'clean-up' laser filter.

Visit our internet shop for Brinell precision medical Laser eye-wear: 

Brinell Laser protection eyewear shop

1 comment:

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