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5 March 2022 Reconfigurable photonics using the tunable phase-transition temperature of defect-engineered vanadium dioxide
Chenghao Wan, Martin Hafermann, Tae Joon Park, Zhen Zhang, Yuzhe Xiao, Hongyan Mei, Shriram Ramanathan, Carsten Ronning, Mikhail Kats
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Proceedings Volume PC12010, Photonic and Phononic Properties of Engineered Nanostructures XII; PC120100A (2022) https://doi.org/10.1117/12.2609034
Event: SPIE OPTO, 2022, San Francisco, California, United States
Abstract
We previously demonstrated that the insulator-to-metal transition (IMT) temperature of vanadium dioxide (VO2) can be modified by engineering its defect density via ion implantation. Here, we quantitatively characterize the defect-induced changes to the IMT temperature and optical refractive indices with respect to the ion fluence. We identify an ion-fluence regime in which the IMT temperature can be modified without changes to the optical contrast between the pure phases, which is generally favorable for reconfigurable photonic applications. As a demonstration, we were able to lower the triggering temperature of a VO2-based optical limiter by 18 °C without trading off its transmittance contrast.
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Chenghao Wan, Martin Hafermann, Tae Joon Park, Zhen Zhang, Yuzhe Xiao, Hongyan Mei, Shriram Ramanathan, Carsten Ronning, and Mikhail Kats "Reconfigurable photonics using the tunable phase-transition temperature of defect-engineered vanadium dioxide", Proc. SPIE PC12010, Photonic and Phononic Properties of Engineered Nanostructures XII, PC120100A (5 March 2022); https://doi.org/10.1117/12.2609034
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KEYWORDS
Photonics
Vanadium
Ion beams
Optical properties
Refractive index
Transmittance
Optical components
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