Rostock 2019 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 57: Poster: Quantum Optics and Photonics III
Q 57.19: Poster
Thursday, March 14, 2019, 16:15–18:15, S Fobau Physik
Set-up for the precise determination of the photoelastic constants of dielectric materials — •Jan Meyer2, Johannes Dickmann1, Walter Dickmann1,2, Tim Käseberg1, and Stefanie Kroker1,2 — 1Physikalisch-Technische Bundesanstalt Braunschweig, Bundesallee 100, 38116 Braunschweig, Germany — 2Technische Universität Braunschweig, LENA Laboratory for Emerging Nanometrology, Pockelsstraße 14, Braunschweig, Germany
Stress-induced birefringence due to the photo-elastic effect signficantly influences the functionality of optical and optomechanical devices, e.g. optical fibers or optical ring resonators. We present a set-up for the precise determination of the photoelastic constant. The sample is exposed to a well-defined stress applying a linear load. The birefringence is read out differentially using a polarimeter in transmission. In order to test the setup, the stress-induced birefringences of crystalline silicon and fused silica were characterized. The results are in good agreement with literature data. Since many high-precision optomechanical experiments operate at low-temperatures, corresponding measurements are in preparation.