Current Research:
My current research focus please find in: https://www.ei.tum.de/en/esm/research/
PhD Research:
My dissertation Compact Laser-Spectroscopic Gas Sensors using Vertical-Cavity Surface-Emitting Lasers deals with the question of how the excellent properties of laser spectroscopy can be made accessible to a broader application range in the field of gas sensing. Theoretical design criteria for optimal laser-optical sensors are determined in terms of sensor resolution and measurement rate, which resulted in a completely new concept including novel components like surface-emitting lasers (VCSEL) and gas permeable optical fibers. This together with optimum signal processing allows for a significant increase in sensor resolution and measurement rate as well as a reduction in sensor complexity and cost (hand-held size). Using the obtained knowledge, oxygen and carbon monoxide sensors for combustion control, fire detection and medical breath analysis were developed, and tested successfully under real conditions.
Cover figure of my thesis illustrates the various components optimized for the realization of the system: Surface emitting laser - hollow fiber as gas cell -Optimization of wavelength scanning - Inherent Calibration scheme