Colossal optical anisotropy from atomic-scale modulations

Hongyan Mei; Guodong Ren; Boyang Zhao; Jad Salman; Gwan-Yeong Jung; Huandong Chen; Shantanu Singh; Arashdeep S. Thind; John Cavin; Jordan A. Hachtel; Miaofang Chi; Shanyuan Niu; Graham Joe; Chenghao Wan; Nick Settineri; Simon J. Teat; Bryan C. Chakoumakos; Jayakanth Ravichandran; Rohan Mishra; Mikhail A. Kats

doi:10.1117/12.2676394

28 September 2023 Colossal optical anisotropy from atomic-scale modulations

Hongyan Mei, Guodong Ren, Boyang Zhao, Jad Salman, Gwan-Yeong Jung, Huandong Chen, Shantanu Singh, Arashdeep S. Thind, John Cavin, Jordan A. Hachtel, Miaofang Chi, Shanyuan Niu, Graham Joe, Chenghao Wan, Nick Settineri, Simon J. Teat, Bryan C. Chakoumakos, Jayakanth Ravichandran, Rohan Mishra, Mikhail A. Kats

Author Affiliations +

Proceedings Volume PC12657, Quantum Nanophotonic Materials, Devices, and Systems 2023; PC1265702 (2023) https://doi.org/10.1117/12.2676394
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Materials with large optical anisotropy are sought after for polarization control, nonlinear phase matching, the realization of unconventional surface waves, among other applications in classical and quantum optics. Here, we demonstrate a bulk uniaxial crystal with atomic-scale structural modulations, Sr9/8TiS3, has a record birefringence Δn = 2.1 across a broad transparent window in the mid- to far-infrared. The excess Sr atoms, compared to stoichiometric SrTiS3, introduce additional electrons into TiS6 octahedral blocks to form highly polarizable clouds, which selectively boost the extraordinary refractive index. Structural modulation is a new tool for the engineering of refractive-index and anisotropy of quantum materials.

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Hongyan Mei, Guodong Ren, Boyang Zhao, Jad Salman, Gwan-Yeong Jung, Huandong Chen, Shantanu Singh, Arashdeep S. Thind, John Cavin, Jordan A. Hachtel, Miaofang Chi, Shanyuan Niu, Graham Joe, Chenghao Wan, Nick Settineri, Simon J. Teat, Bryan C. Chakoumakos, Jayakanth Ravichandran, Rohan Mishra, and Mikhail A. Kats "Colossal optical anisotropy from atomic-scale modulations", Proc. SPIE PC12657, Quantum Nanophotonic Materials, Devices, and Systems 2023, PC1265702 (28 September 2023); https://doi.org/10.1117/12.2676394

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KEYWORDS

Anisotropy

Modulation

Electrons

Polarization control

Strontium

Quantum limits

Quantum optics

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