Ultrahigh refractive index chalcogenide based copolymers for infrared optics
(Conference Presentation)

Laura E. Anderson; Soha Namnabat; Kookheon Char; Richard Glass; Robert A. Norwood; Jeffrey Pyun

doi:10.1117/12.2237005

3 November 2016 Ultrahigh refractive index chalcogenide based copolymers for infrared optics (Conference Presentation)

Laura E. Anderson, Soha Namnabat, Kookheon Char, Richard Glass, Robert A. Norwood, Jeffrey Pyun

Proceedings Volume 9939, Light Manipulating Organic Materials and Devices III; 99390I (2016) https://doi.org/10.1117/12.2237005
Event: SPIE Organic Photonics + Electronics, 2016, San Diego, California, United States

Abstract

Current trends in technology development demand increased miniaturization and higher level integration of electronic and photonic components. Such needs arise in emerging imaging systems, optoelectronic devices, optical interconnects and photonic integrated circuits. Compact, integrated photonics requires high refractive index materials, which primarily comprise crystalline and amorphous semiconductors, as well as chalcogenide glasses, which can possess refractive indices higher than 4 and good infrared transparency. There is currently no high refractive index (n ~ 2 or above) that has the low cost production and ease of processing available in optical polymers. Such polymers would potentially cover applications that are not convenient or possible with crystalline and vitreous semiconductors. Examples of such applications include micro lens arrays for image sensors, optical adhesives for bonding and antireflection coatings, and high contrast optical waveguides. While much of the focus has been in the telecommunications transparency regions, significant new opportunities exist for a polymer which is capable of transmitting efficiently in the MWIR region. While there are polymers that have been synthesized with refractive indices as high as 1.75, these polymers are generally conjugated and incorporate heteroatoms such as sulfur or metals, and generally have complex and expensive syntheses. Here we report on new chalcogenide based copolymers with very high refractive index (n ~ 2) that also have good optical transmission properties in the near-, short- and mid-wave infrared up to 5µm. These polymers are rich in sulfur, have low hydrogen content and were made using inverse vulcanization.

Conference Presentation

Citation Download Citation

Laura E. Anderson, Soha Namnabat, Kookheon Char, Richard Glass, Robert A. Norwood, and Jeffrey Pyun "Ultrahigh refractive index chalcogenide based copolymers for infrared optics (Conference Presentation)", Proc. SPIE 9939, Light Manipulating Organic Materials and Devices III, 99390I (3 November 2016); https://doi.org/10.1117/12.2237005

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KEYWORDS

Refractive index

Polymers

Chalcogenides

Infrared radiation

Crystals

Mid-IR

Sulfur

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