TY - JOUR
T1 - On-chip, high-sensitivity temperature sensors based on dye-doped solid-state polymer microring lasers
AU - Wan, Lei
AU - Chandrahalim, Hengky
AU - Chen, Cong
AU - Chen, Qiushu
AU - Mei, Ting
AU - Oki, Yuji
AU - Nishimura, Naoya
AU - Guo, L. Jay
AU - Fan, Xudong
N1 - Funding Information:
The authors gratefully thank Q. Y. Cui and J. Zhou from the Michigan of University for experimental assistance. L.W. acknowledges C. Zhang from the National Institute of Standards and Technology (NIST) for linguistic revision. We would also like to acknowledge the technical support from Lurie Nanofabrication Facility (LNF) at the University of Michigan.
Publisher Copyright:
© 2017 Author(s).
PY - 2017/8/7
Y1 - 2017/8/7
N2 - We developed a chip-scale temperature sensor with a high sensitivity of 228.6 pm/°C based on a rhodamine 6G (R6G)-doped SU-8 whispering gallery mode microring laser. The optical mode was largely distributed in a polymer core layer with a 30 μm height that provided detection sensitivity, and the chemically robust fused-silica microring resonator host platform guaranteed its versatility for investigating different functional polymer materials with different refractive indices. As a proof of concept, a dye-doped hyperbranched polymer (TZ-001) microring laser-based temperature sensor was simultaneously developed on the same host wafer and characterized using a free-space optics measurement setup. Compared to TZ-001, the SU-8 polymer microring laser had a lower lasing threshold and a better photostability. The R6G-doped SU-8 polymer microring laser demonstrated greater adaptability as a high-performance temperature-sensing element. In addition to the sensitivity, the temperature resolutions for the laser-based sensors were also estimated to be 0.13 °C and 0.35 °C, respectively. The rapid and simple implementation of micrometer-sized temperature sensors that operate in the range of 31 - 43 °C enables their potential application in thermometry.
AB - We developed a chip-scale temperature sensor with a high sensitivity of 228.6 pm/°C based on a rhodamine 6G (R6G)-doped SU-8 whispering gallery mode microring laser. The optical mode was largely distributed in a polymer core layer with a 30 μm height that provided detection sensitivity, and the chemically robust fused-silica microring resonator host platform guaranteed its versatility for investigating different functional polymer materials with different refractive indices. As a proof of concept, a dye-doped hyperbranched polymer (TZ-001) microring laser-based temperature sensor was simultaneously developed on the same host wafer and characterized using a free-space optics measurement setup. Compared to TZ-001, the SU-8 polymer microring laser had a lower lasing threshold and a better photostability. The R6G-doped SU-8 polymer microring laser demonstrated greater adaptability as a high-performance temperature-sensing element. In addition to the sensitivity, the temperature resolutions for the laser-based sensors were also estimated to be 0.13 °C and 0.35 °C, respectively. The rapid and simple implementation of micrometer-sized temperature sensors that operate in the range of 31 - 43 °C enables their potential application in thermometry.
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U2 - 10.1063/1.4986825
DO - 10.1063/1.4986825
M3 - Article
AN - SCOPUS:85027266465
VL - 111
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 6
M1 - 061109
ER -