A high-resolution strain-gauge nanolaser

Jae-Hyuck Choi, You-Shin No, Jae-Pil So, Jung Min Lee, Kyoung-Ho Kim, Min-Soo Hwang, Soon-Hong Kwon and Hong-Gyu Park ()
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Jae-Hyuck Choi: Korea University
You-Shin No: Korea University
Jae-Pil So: Korea University
Jung Min Lee: Korea University
Kyoung-Ho Kim: Korea University
Min-Soo Hwang: Korea University
Soon-Hong Kwon: Chung-Ang University
Hong-Gyu Park: Korea University

Nature Communications, 2016, vol. 7, issue 1, 1-8

Abstract: Abstract Interest in mechanical compliance has been motivated by the development of flexible electronics and mechanosensors. In particular, studies and characterization of structural deformation at the fundamental scale can offer opportunities to improve the device sensitivity and spatiotemporal response; however, the development of precise measurement tools with the appropriate resolution remains a challenge. Here we report a flexible and stretchable photonic crystal nanolaser whose spectral and modal behaviours are sensitive to nanoscale structural alterations. Reversible spectral tuning of ∼26 nm in lasing wavelength, with a sub-nanometre resolution of less than ∼0.6 nm, is demonstrated in response to applied strain ranging from −10 to 12%. Instantaneous visualization of the sign of the strain is also characterized by exploring the structural and corresponding modal symmetry. Furthermore, our high-resolution strain-gauge nanolaser functions as a stable and deterministic strain-based pH sensor in an opto-fluidic system, which may be useful for further analysis of chemical/biological systems.

Date: 2016
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DOI: 10.1038/ncomms11569

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