Anna-Lena Sahlberg, Combustion Physics will defend her PhD-thesis with the title "Non-Linear Mid-Infrared Laser Techniques for Combustion Diagnostics". The docotral thesis is available at the Department. Opponent appointed by the Faculty is Dr. Dimitrii Kozlov, Optical Spectroscopy Department, A. M. Prokhorov General Physic Institute, Russian Academy of Sciences, Russia.