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Switching the Nonparametric Optical Nonlinearity of Tungsten Oxide by Electrical Modulation

Li, Hui; Hou, Ruipeng; Sun, Yanhui; Diao, Mengjuan; Liang, Ying; Chen, Xin; Huang, Zhipeng; Wang, Jun; Humphrey, Mark; Yu, Zhiyang; Zhang, Chi


This work shows the electrical switching of the nonparametric optical nonlinearity of tungsten oxide (WO ). The sign and magnitude of the effective nonlinear absorption coefficient (β ) can be modulated via application of an external bias. With laser excitation at 1030 nm, WO shows a relatively large saturable absorption (SA) under an applied voltage (V ) of −2.5 V, with β being as large as −632 cm GW , while reverse saturable absorption (RSA) is found for V larger than −1.5 V. The...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
Source: Advanced Optical Materials
DOI: 10.1002/adom.202002188


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