UV to IR high-efficiency antireflective surface modification of freeform and cylindrical lenses for space platform optical instrumentation

Uma Subash; Hanshin Lee; Menelaos K. Poutous

doi:10.1117/12.2675746

4 October 2023 UV to IR high-efficiency antireflective surface modification of freeform and cylindrical lenses for space platform optical instrumentation

Uma Subash, Hanshin Lee, Menelaos K. Poutous

Author Affiliations +

Proceedings Volume 12676, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts XI; 126760H (2023) https://doi.org/10.1117/12.2675746
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

Randomly distributed anti-reflective nanostructures were fabricated on both surfaces of cylindrical lenses and freeform optical surfaces, using a plasma assisted reactive-ion etching technique. Spectral transmission of an average 98% was measured across the range 340-800 nm. Mid-band full-angle directional scatter measurements show a difference of six orders-of-magnitude in transmission intensity between specular and off-specular angles. Measurements before and after the etching process show little to no wavefront distortion for the cylindrical lenses. As the nanostructures are etched into the optical surface their thermal and mechanical shock resilience is high, as verified by our prior work on fused silica windows.

Conference Presentation

Citation Download Citation

Uma Subash, Hanshin Lee, and Menelaos K. Poutous "UV to IR high-efficiency antireflective surface modification of freeform and cylindrical lenses for space platform optical instrumentation", Proc. SPIE 12676, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts XI, 126760H (4 October 2023); https://doi.org/10.1117/12.2675746

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