Research Group Prof. Dr. G. Friedrichs

CRDS goes IR

May 2013
CRDS goes IRThe new Aculight Argos 2400 SF cw-OPO infrared laser light source (bluish illuminated devices on photo) arrived and was immediately put into service. The continuous wave laser offers a wide tunability (λ = 1.38 –  1.60  μm & 3.2 – 4.6 μm),  a narrow spectral bandwidth (Δν < 60 kHz @ Δt = 500 μs), and high output power (P = 1.8 W @ λ = 3.3 μm). The state-of-the-art laser system was funded by the cluster of excellence "The Future Ocean" in order to develop next generation CRDS (cavity ringdown spectroscopy) analyzers for environmental research.

In close cooperation with the Helmholtz Research School for Ocean System Science and Technology (HOSST; collaborators: A. Körtzinger, GEOMAR Kiel, D. Wallace, HMRI Canada), Ibrahim Sadiek started to range possibilities of Saturation-CRDS to dectect volatile halogenated organic compounds in the IR spectral range.