Optical temperature sensing based on the Goos-Hänchen effect.
The possibility of constructing an optical sensor for temperature monitoring based on the Goos-Hänchen (GH) effect is explored using a theoretical model. This model considers the lateral shift of the incident beam upon reflection from a metal-dielectric interface, with the shift becoming a function of temperature due mainly to the temperature dependence of the optical properties of the metal. It is found that such a sensor can be most effective by using long wavelength p-polarized incident light at almost grazing incidence onto the metal, where significant variation of negative GH shifts can be observed as a function of the temperature.
Institute of Optoelectronic Sciences, National Taiwan Ocean University, Keelung, Taiwan.
Chih-Wei
CW
Chen
Wen-Chi
WC
Lin
Lu-Shing
LS
Liao
Zheng-Hung
ZH
Lin
Hai-Pang
HP
Chiang
Pui-Tak
PT
Leung
Edin
E
Sijercic
Wan-Sun
WS
Tse