Erlangen 2018 – wissenschaftliches Programm

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A: Fachverband Atomphysik

A 7: Laser Development and Applications (joint session Q/A)

A 7.4: Vortrag

Montag, 5. März 2018, 14:45–15:00, K 0.023

Noncollinear optical parametric oscillator for Raman Spectroscopy of Microplastics — •Luise Beichert¹, Yuliya Binhammer¹, José Ricardo Andrade¹, and Uwe Morgner^1,2 — ¹Institut für Quantenoptik, Leibniz Universität Hannover, Germany — ²Hannoversches Zentrum für optische Technologien, Leibniz Universität Hannover, Germany

Meanwhile microplastics can be detected in an increasing rate in our enviroment as well as in our drinking water. We present a broadband and fast tunable light source to detect these particles via stimulated Raman scattering in water circulation.

Noncollinear optical parametric oscillators (NOPOs) provide a good scalability in terms of output power, repetition rate and pulse energy. The instantaneous broadband frequency conversion combined with the special phase matching geometry in the nonlinear crystal enables a fast tunability without readjustment.

We show an IR-NOPO, rapidly tunable in 1 ms from 750 to 950 nm and Ramanspectra in the range of 500-3200 cm⁻¹ of different plastic particles.