Real-time stimulated Raman spectroscopy with a non-collinear optical parametric oscillator

verfasst von

Luise Beichert, Yuliya Binhammer, José R.C. Andrade, Robin Mevert, Ann Kathrin Kniggendorf, Bernhard Roth, Uwe Morgner

Abstract

Ultrafast detection of microplastic particles is becoming a vital problem, as these particles are found in water sources worldwide. Ideally, a live analysis in flow is desirable to directly monitor the water quality for contaminations. Therefore, coherent Raman spectroscopy techniques require fast and broadband tunable lasers to address all relevant spectral regions of the investigated samples. In our work, we combine a high power non-collinear optical parametric oscillator with a real-time stimulated Raman scattering spectroscopy setup. The light source is continously tunable from 700 nm to 1030 nm in less than 10 ms, delivering an average output power of more than 500 mW with sub-ps pulses. We show the immediate observation of mixing processes and the detection of microplastic particles in water solution with a spectral window of more than 2000 cm⁻¹

Organisationseinheit(en)

Institut für Quantenoptik
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
Hannoversches Zentrum für Optische Technologien (HOT)

Externe Organisation(en)

Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (MBI)

Typ

Artikel

Journal

Optics express

Band

29

Seiten

31499-31507

Anzahl der Seiten

9

ISSN

1094-4087

Publikationsdatum

27.09.2021

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Atom- und Molekularphysik sowie Optik

Elektronische Version(en)

https://doi.org/10.1364/OE.436318 (Zugang: Offen)