TY  - JOUR
AU  - Labrador-Páez, L.
AU  - Soler-Carracedo, K.
AU  - Hernández-Rodríguez, M.
AU  - Martín, I.R.
AU  - Carmon, T.
AU  - Martin, L.L.
T1  - Liquid whispering-gallery-mode resonator as a humidity sensor
LA  - eng
PY  - 2017
SP  - 1165
EP  - 1172
T2  - Optics Express
SN  - 1094-4087
VL  - 25
IS  - 2
PB  - OSA - The Optical Society
AB  - We experimentally demonstrate the high sensitivity of a novel liquid state, whispering-gallery-mode optical resonator to humidity changes. The optical resonator used consists of a droplet made of glycerol, a transparent liquid that enables high optical quality factor, doped with fluorescent material. As glycerol is highly hygroscopic, the refractive index and radius of the droplet change with ambient humidity. This produces a shift on the whispering gallery mode's wavelengths, which modulates the emission of the fluorescent material. This device shows an unpreceded sensitivity of 10-3 per relative humidity percent.
DO  - 10.1364/OE.25.001165
UR  - https://portalciencia.ull.es/documentos/5e3c3d9229995246bbf60d5a
DP  - Dialnet - Portal de la Investigación
ER  -