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Published (Version of record)CC BY-NC-ND V4.0, Open Access
Published (Version of record)CC BY-NC-ND V4.0, Open
Journal article
Giant second harmonic generation in two-dimensional tellurene with synthesis and thickness engineering
Applied physics reviews, Vol.12(1), pp.1-10
03/2025
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Abstract
Second harmonic generation (SHG) is a prominent branch of non-linear optics (NLO) heavily reliant on conventional bulk NLO crystals. However, the difficulty in downsizing these crystals imposes technical limitations on the future of miniaturized NLO devices. Tellurene emerges as a promising candidate to overcome these restrictions, excelling in electrical applications and believed to possess a giant second-order optical susceptibility comparable to conventional NLO crystals. In this study, a face-to-face substrate configuration is employed for the synthesis of ultrathin tellurene via PVD. Our findings reveal that tellurene's SHG performance surpasses that of monolayer transition metal dichalcogenides by two orders of magnitude, with maximum efficiency when the flake thickness is between 16 and 20 nm under various wavelengths. High sensitivity to thickness variation encourages post-growth thinning through hydrogen plasma etching, enabling precise engineering of the flake thickness for optimal SHG. This establishes a foundation for controlled tellurene thickness, further broadening its potential in diverse applications.
Details
- Title
- Giant second harmonic generation in two-dimensional tellurene with synthesis and thickness engineering
- Creators
- Boqing Liu - Australian National UniversityKun Liang - Australian National UniversityQingyi Zhou - University of Wisconsin–MadisonAhmed Raza Khan - Australian National UniversityZhuoyuan Lu - Australian National UniversityTanju Yildirim - National Institute for Materials ScienceXueqian Sun - Australian National UniversitySharidya Rahman - Australian National UniversityYun Liu - Australian National UniversityZongfu Yu - University of Wisconsin–MadisonYuerui Lu - Australian National University
- Publication Details
- Applied physics reviews, Vol.12(1), pp.1-10
- Publisher
- AIP Publishing
- Number of pages
- 9
- Grant note
- The authors acknowledge funding support from ANU Ph.D. student scholarship, Australian Research Council (ARC; Grant Nos. DP220102219, DP240101011, LE200100032) and ARC Centre of Excellence in Quantum Computation and Communication Technology (Grant No. CE170100012), and National Heart Foundation (ARIES ID: 35852).
- Identifiers
- 991013262208202368
- Copyright
- © 2025 Author(s).
- Academic Unit
- Faculty of Science and Engineering
- Language
- English
- Resource Type
- Journal article