Colossal Optical Anisotropy from Atomic-Scale Modulations

Colossal Optical Anisotropy from Atomic-Scale Modulations

© 2023 The Authors. Advanced Materials published by Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 35(2023), 42 vom: 04. Okt., Seite e2303588
1. Verfasser: Mei, Hongyan (VerfasserIn)
Weitere Verfasser: Ren, Guodong, Zhao, Boyang, Salman, Jad, Jung, Gwan Yeong, Chen, Huandong, Singh, Shantanu, Thind, Arashdeep S, Cavin, John, Hachtel, Jordan A, Chi, Miaofang, Niu, Shanyuan, Joe, Graham, Wan, Chenghao, Settineri, Nick, Teat, Simon J, Chakoumakos, Bryan C, Ravichandran, Jayakanth, Mishra, Rohan, Kats, Mikhail A
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article birefringence chalcogenides optical anisotropy structural modulation
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520 |a Materials with large birefringence (Δn, where n is the refractive index) are sought after for polarization control (e.g., in wave plates, polarizing beam splitters, etc.), nonlinear optics, micromanipulation, and as a platform for unconventional light-matter coupling, such as hyperbolic phonon polaritons. Layered 2D materials can feature some of the largest optical anisotropy; however, their use in most optical systems is limited because their optical axis is out of the plane of the layers and the layers are weakly attached. This work demonstrates that a bulk crystal with subtle periodic modulations in its structure-Sr9/8 TiS3 -is transparent and positive-uniaxial, with extraordinary index ne = 4.5 and ordinary index no = 2.4 in the mid- to far-infrared. The excess Sr, compared to stoichiometric SrTiS3 , results in the formation of TiS6 trigonal-prismatic units that break the chains of face-sharing TiS6 octahedra in SrTiS3 into periodic blocks of five TiS6 octahedral units. The additional electrons introduced by the excess Sr form highly oriented electron clouds, which selectively boost the extraordinary index ne and result in record birefringence (Δn > 2.1 with low loss). The connection between subtle structural modulations and large changes in refractive index suggests new categories of anisotropic materials and also tunable optical materials with large refractive-index modulation 
650 4 |a Journal Article 
650 4 |a birefringence 
650 4 |a chalcogenides 
650 4 |a optical anisotropy 
650 4 |a structural modulation 
700 1 |a Ren, Guodong  |e verfasserin  |4 aut 
700 1 |a Zhao, Boyang  |e verfasserin  |4 aut 
700 1 |a Salman, Jad  |e verfasserin  |4 aut 
700 1 |a Jung, Gwan Yeong  |e verfasserin  |4 aut 
700 1 |a Chen, Huandong  |e verfasserin  |4 aut 
700 1 |a Singh, Shantanu  |e verfasserin  |4 aut 
700 1 |a Thind, Arashdeep S  |e verfasserin  |4 aut 
700 1 |a Cavin, John  |e verfasserin  |4 aut 
700 1 |a Hachtel, Jordan A  |e verfasserin  |4 aut 
700 1 |a Chi, Miaofang  |e verfasserin  |4 aut 
700 1 |a Niu, Shanyuan  |e verfasserin  |4 aut 
700 1 |a Joe, Graham  |e verfasserin  |4 aut 
700 1 |a Wan, Chenghao  |e verfasserin  |4 aut 
700 1 |a Settineri, Nick  |e verfasserin  |4 aut 
700 1 |a Teat, Simon J  |e verfasserin  |4 aut 
700 1 |a Chakoumakos, Bryan C  |e verfasserin  |4 aut 
700 1 |a Ravichandran, Jayakanth  |e verfasserin  |4 aut 
700 1 |a Mishra, Rohan  |e verfasserin  |4 aut 
700 1 |a Kats, Mikhail A  |e verfasserin  |4 aut 
773 0 8 |i Enthalten in  |t Advanced materials (Deerfield Beach, Fla.)  |d 1998  |g 35(2023), 42 vom: 04. Okt., Seite e2303588  |w (DE-627)NLM098206397  |x 1521-4095  |7 nnns 
773 1 8 |g volume:35  |g year:2023  |g number:42  |g day:04  |g month:10  |g pages:e2303588 
856 4 0 |u http://dx.doi.org/10.1002/adma.202303588  |3 Volltext 
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