Author Archives: John_Lincoln

Chalcogenide manufacturing partnership- the sequel

Posted on November 11, 2020 by John_Lincoln

The grant underpinning the current Chalcogenide Advanced Manufacturing Partnership (ChAMP) is due to finish in early 2021. We are now in final stages of defining a follow-on program of work. Built around the feedback we have received from our many … Continue reading →

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Extruding chalcogenide glass for optical fibre

Posted on May 7, 2020 by John_Lincoln

ChAMP has demonstrated for the first time fabrication of a core-clad GLS-Se glass-based optical fibre using extrusion. For initial demonstration two glass compositions similar in thermal and mechanical characteristics were chosen, with only a 5wt% difference of Ga2Se3 between core … Continue reading →

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More on Chalcogenide glass development at Laser World of Photonics

Posted on June 17, 2019 by John_Lincoln

Visit us at Stand 121 Hall B2 at LASER World of Photonics in Munich 24-27 June 2019 to learn more of the latest developments in Chalcogenide glass development including the latest moulded lens samples, progress in optical fibre development and … Continue reading →

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Sellmeier Coefficients for GLS glass

Posted on June 17, 2019 by John_Lincoln

In response to many requests from optical designers and using the latest visible to infrared index data for GLS glass we are pleased to release the full Sellmeier coefficients for GLS. Use of the following coefficient enables the refractive properties … Continue reading →

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Plenty of interest in GLS chacogenide glass at DCS

Posted on April 17, 2019 by John_Lincoln

ChAMP have been exhibiting all week at SPIE’s Defense and Commercial Sensing meeting in Baltimore with plenty of industry interest in the GLS family of glasses

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Anti-reflection coatings

Posted on July 19, 2018 by John_Lincoln

In partnership with Artemis Optical,  anti-reflection coating of GLS chalcogenide glass has been demonstrated.  This reduces reflections from GLS glass surfaces to <1%, significantly lower than the ~28% reflection from the uncoated glass that is a result of its high … Continue reading →

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Infrared sensing and imaging : Challenges for next generation materials and devices

Posted on February 8, 2018 by John_Lincoln

Presentations from the Infrared sensing and imaging : Challenges for next generation materials and devices meeting in Exeter on 15 November 2017 are now available

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Chalcogenide glass-on-graphene

Posted on November 7, 2017 by John_Lincoln

2d-material integration enabled by direct deposition of chalcogenide glass onto graphene is detailed in our latest Nature publication, in collaboration with MIT   The deposited chalcogenides can be directly pattered on a variety of 2D materials to simultaneously act as  … Continue reading →

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Optical, Thermal, and Mechanical Characterization of Ga2Se3-Added GLS Glass published in Advanced Materials.

Posted on August 29, 2017 by John_Lincoln

Video abstract of our latest publication in Advanced Materials Jul 6, 2017 The results of the addition of Se to gallium lanthanum sulphide (GLS) glass through the substitution of Ga2S3 by Ga2Se3 are described. An innovative open melting apparatus is used. … Continue reading →

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Structural modification of GaLaS glass for a new family of chalcogenides

Posted on April 20, 2017 by John_Lincoln

Andrea Ravagli presents the latest on ChAMP chalcogenide glass development at SPIE Secuirty and Defence in Anaheim on April 11 2017. Including new CTE, Tg and hardness measurements for up to 60% Ga2Se2 glass and the impact of Indium and Tellurium … Continue reading →

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