IR chalcogenide microlens arrays

Fan Zhang; Feng Chen

doi:10.1117/12.3006029

24 November 2023 IR chalcogenide microlens arrays

Fan Zhang, Feng Chen

Proceedings Volume 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023); 129351I (2023) https://doi.org/10.1117/12.3006029
Event: Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 2023, Xi’an, China

Abstract

The mid-infrared (MIR) band encompasses crucial molecular fingerprint regions and atmospheric infrared windows, making it highly significant for various applications such as environmental monitoring, biosensing, and medical diagnostics. In this study, we present the fabrication of a MIR microlens array (MLA) using a combination of highspeed femtosecond laser scanning technology and thermal imprinting technology. The resulting microscale convex MLAs were densely packed, with over one million units on a 2cm×2cm chalcogenide glass (CHG) surface, offering adjustable sizes and non-spherical contour profiles. The CHG MLAs demonstrated exceptional imaging performance, achieving a high transmittance of 60-70% within the 2.5 ~ 15μm range. This technique boasts advantages such as low cost and high efficiency, presenting significant potential for widespread applications in the forefront of the mid-infrared field.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Fan Zhang and Feng Chen "IR chalcogenide microlens arrays", Proc. SPIE 12935, Fourteenth International Conference on Information Optics and Photonics (CIOP 2023), 129351I (24 November 2023); https://doi.org/10.1117/12.3006029

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