First Steps towards a Super-Compact In-Situ Laser-Induced-Incandescence Sensor System

Martin Kupper, Jožef Pulko, Martin Kraft, Alexander Bergmann

Research output: Contribution to journalArticlepeer-review


To realize an actual in-situ Laser-Induced Incandescence (LII) sensor system for measurements in an exhaust pipe of a combustion engine, suitable components for such an application were chosen, integrated in a first prototype and tested. Key components for the proposed LII system are a super-compact high-power DPSS laser (CTR HiPoLas®) as excitation source, fast KETEK silicon photomultipliers (SiPM) as detectors and a specially designed optical measurement setup. Using a defined aerosol from a soot generator (Jing 5201 miniCAST), signals were collected at different laser energies and soot concentrations. By comparing the recorded behaviour with the literature, the incandescence effect could be reliably identified as the true source of the signal. Further long-term tests at an AVL engine testbed were performed.
Original languageEnglish
Article number1017
Number of pages4
JournalProceedings MDPI
Issue number13
Publication statusPublished - 2 Apr 2019
EventEurosensors 2018 - Karl Franzens Universität Graz, Graz, Austria
Duration: 9 Sep 201812 Sep 2018


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