Deutsches Zentrum Fur Luft-Und Raumfahrt E.v.

Spherea Gmbh

Andreas Fix

Peter Peuser

Hans H Klingenberg

Peter Mahnke

Christian Lemmerz

Martin Wirth

The invention relates to a mobile remote detection device for accumulations of methane, comprising an emitter device having a light source in order to generate light, the wavelength of said light source being tuned with the spectral signature of methane, whereby the light can be directed onto a measuring field. The detection device also comprises a detector device for detecting backscattered light, and an evaluation device. The aim of the invention is to improve the remote detection device in such a manner that it has a high degree of measuring sensitivity with a compact and stable structure. According to the invention, the light source generates light with a wavelength at which methane is absorbed, wherein the wavelength lies between 3200 nm and 3300 nm, and the light source has an optical parametric oscillator with injection seeding, the oscillator being associated with a pump laser.

Mobile remote detection device and remote detection method for methane gas accumulations

A method and device for frequency conversion of the radiation of a pulsed optical parametric oscillator (OPO) through sum or difference frequency mixing of a pulsed laser pump radiation with an OPO radiation, where the frequency mixing is integrated into the OPO resonator (,). The method permits the use of OPOs with high conversion efficiency in spectral ranges for scientific, technical and medical applications.

Method of frequency conversion of the radiation of a pulsed optical parametric oscillator (OPO) and device for executing the method

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Gilching, Germany

Andreas Fix