DataVXACS NanoPaper
journal article·2018-12-26

Piezoelectric Effect Tuning on ZnO Microwire Whispering-Gallery Mode Lasing

Junfeng Lu, Chunxiang Xu, Fangtao Li, Zheng Yang, Yiyao Peng, Xiaoyi Li, Miaoling Que, Caofeng Pan, Zhong Lin Wang

ACS Nano· Volume 12· Issue 12
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Source abstract

Abstract

We 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.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: ZnO doping and properties · Nanowire Synthesis and Applications · Random lasers and scattering media

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, P. R. China

College of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing 100049, P. R. China

State Key Laboratory of Bioelectronics, School of Biological Science and Medical Engineering, Southeast University, Nanjing 210096, P. R. China

School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States

Funding

Ministry of Science and Technology of the People's Republic of China · Natural Science Foundation of Beijing Municipality · China Postdoctoral Science Foundation · National Natural Science Foundation of China · Thousands Talents Program for Pioneer Researcher and his Innovation Team · Beijing Municipal Science and Technology Commission

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