Affiliation: | a Division of Pumps, Drivers and Power Stations, Institute of Heat Engineering, Faculty of Power and Aeronautical Engineering, Warsaw University of Technology, ul. ?w. Andrzeja Boboli 8, 02-525 Warsaw, Poland b Division Photonics Engineering, Institute of Micromechanics and Photonics, Faculty of Mechatronics, Warsaw University of Technology, ul. ?w. Andrzeja Boboli 8, 02-525 Warsaw, Poland |