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Get Free AccessWe report a dynamic tuning on coherent light emission wavelengths of single ZnO microwire by using the piezoelectric effect. Owing to the dominant role occupied by the piezoelectric polarization effect in the wurtzite-structure ZnO microwire, the effective dielectric constant (or refraction index) of the gain media was modulated toward an increasing trend by applying a tensile strain, resulting in a shift of the strain-mediated whispering-gallery mode (WGM) lasing at room temperature. Also, the strain required to resolve the spectra in the two operating types of PL and lasing were systematically analyzed and compared. Because of the narrow line width in the lasing mode, the strain-dependent spectral resolution was improved by an order of magnitude, making it feasible for achieving high-precision, ultrasensitive, and noncontact stress sensing. Our results have an important impact on laser modulation, optical communication, and optical sensing technology.
Junfeng Lu, Chunxiang Xu, Fangtao Li, Zheng Yang, Yiyao Peng, Xiaoyi Li, Miaoling Que, Caofeng Pan, Zhong Lin Wang (2018). Piezoelectric Effect Tuning on ZnO Microwire Whispering-Gallery Mode Lasing. , 12(12), DOI: https://doi.org/10.1021/acsnano.8b06500.
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Type
Article
Year
2018
Authors
9
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1021/acsnano.8b06500
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