Author, Institution: Andrius Žutautas, Kaunas University of Technology
Science area, field of science: Technological Sciences, Materials Engineering, T008
Scientific Supervisor: Prof. Dr. Tomas Tamulevičius (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dissertation Defense Board of Materials Engineering Science Field:
Prof. Dr. Hab. Arvaidas Galdikas (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008) – chairperson
Chief Researcher Dr. Paulius Gečys (Center for Physical Sciences and Technologies, Natural Sciences, Physics, N002)
Chief Researcher Dr. Mindaugas Gedvilas (Center for Physical Sciences and Technologies, Natural Sciences, Physics, N002)
Chief Researcher Dr. Viktoras Grigaliūnas (Kaunas University of Technology, Technological Sciences, Materials Engineering, T008)
Dr. Krisjanis Smits (University of Latvia, Technological Sciences, Materials Engineering, T008)
Dissertation defence meeting will be at Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73 – 402, Kaunas)
The doctoral dissertation is available at the library of Kaunas University of Technology (K. Donelaičio 20, Kaunas) and on the internet: A. Žutautas el. dissertation.pdf
Annotation: The creation of a laser was a very significant leap in technology, and various new applications of light emerged. Lasers are used everywhere from domestic to military applications. This huge interest in laser-related research and laser device adaptability for many different technological and research prospects imparted demand for new qualities, such as increasing power and energy density levels, ultrashort laser pulses, innovative light amplification solutions, opened possible new applications. One of the biggest research leaps in the laser technology came when chirped pulse amplification systems were developed. These systems increased laser power output exponentially. The main optical component of these systems is a diffraction grating because pairs of them are used for pulse temporal and spatial stretching and compression before and after the light amplification procedure so the gain medium will not be damaged. Dissertation is focused around finding a near unit diffraction efficiency optical devices geometries which are formed on several types of commercially available high reflectivity multilayer dielectric mirror stacks with the use of rigorous coupled wave analysis modelling and the modelled structure geometry realisation on these mirrors employing a formed rigorous experimental regime which includes deep reactive ion etching and electron beam lithography.
August 31 d. 10:00
Rectorate Hall of Kaunas University of Technology (K. Donelaičio 73 - 402, Kaunas)
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