A strain-gauge random laser

Ya Ju Lee*, Ting Wei Yeh, P. Nagarjuna, Chieh Chi Tseng, Jui Yun Yi

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

We describe a random laser that uses the ZnO nanorods randomly orientated on a flexible polyimide (PI) substrate as disorderedly optical scatterers to stimulate coherent random lasing actions. Repeatable and reversible tuning of spectral emission is demonstrated by exerting a bending strain on the PI substrate, which enables us to activate the random laser on either below or above the lasing threshold. Furthermore, our random laser functions as a stable and durable optical strain gauge with a gauge factor of ≈37.7 ± 5.4 under a bending strain of 40%, which is comparable to that of traditional electrical strain gauges. The study validates that the reported strain-gauge random laser is able to be used in certain fields where the electrical gauge is restricted and the optical gauge is considered to preferable as an alternative solution.

原文英語
文章編號061103
期刊APL Materials
7
發行號6
DOIs
出版狀態已發佈 - 2019 6月 1

ASJC Scopus subject areas

  • 一般材料科學
  • 一般工程

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