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

• DOI: 10.1364/oe.436318
• Publication Date: 2021-08-25T07:30:08Z
• Authors: Luise Beichert; Yuliya Binhammer; José R. C. Andrade; Robin Mevert; Ann-Kathrin Knigg...; Bernhard Roth; Uwe Morgner
• Keywords: 0202 electrical engineering, electronic engineering, information engineering; Light sources; Microplastic; Raman spectroscopy; Water quality; Average output power; Dewey Decimal Classification::500 | Naturwissenschaften::530 | Physik; 02 engineering and technology; 6. Clean water

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