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RESEARCH PRODUCT
Measurement of the strain-optic coefficients of PMMA from 800 to 2000 nm
Xavier Roselló-mechóAntonio DiezMartina Delgado-pinarMiguel V. Andréssubject
chemistry.chemical_classificationRange (particle radiation)Materials scienceUNESCO::FÍSICAPolymerMolecular physicsPMMAAtomic and Molecular Physics and OpticsRodElectronic Optical and Magnetic MaterialsAzimuthchemistryFiber Bragg grating:FÍSICA [UNESCO]Dispersion (optics)Electrical and Electronic EngineeringWhispering-gallery wavewhispering gallery modesAnisotropystrain-optic coefficientsdescription
The strain-optic coefficients of PMMA are measured in a broad wavelength range from 800 to 2000 nm. The sensitivity of the azimuthal whispering gallery mode resonances to the strain is exploited to measure the strain-optic coefficients of PMMA micro-rods. The technique is based on measuring the wavelength shift of the resonances of both polarizations states, the TE and TM, when an axial strain is applied to the polymer rods. This method enables the determination of the strain-optic coefficients of the material in a broad wavelength range. In particular, in the near-infrared range, the PMMA exhibits negligible dispersion and anisotropy, and the strain-optic coefficients show constant values within the experimental error: p11 = 0.298 ± 0.010 and p12 = 0.294 ± 0.010.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-02-19 |