Andreas Othonos

Personal Information
Position: Professor
Email: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Research Area: Ultrafast Spectroscopy
Phone or fax: +357 - 22892827
Location: Department of Physics ΘΕΕ 02 B220
Teams:
Personal page: http://ultrafast.ucy.ac.cy/
Curriculum Vitae: Andreas Othonos CV Feb 2016.pdf
Profile and Research Interests:

Undergraduate and Graduate studies at the University of Toronto (B.Sc. in Physics, 1984, M.Sc. in High Energy Physics ,1984-1986, Doctor of Philosophy in Physics ,1990, in the area of ultrafast semiconductor laser interactions). Research for the Ph.D. degree was conducted at the National Research Council of Canada and the University of Toronto. From 1990 until 1996 he was with the Ontario Laser and Lightwave Research Center (OLLRC) at the University of Toronto as a Research Scientist where he was in charge of the Ultrafast Laser Laboratory and the Fiber Bragg grating facility. In 1996 he was visiting scientist at the University of Cyprus. Since 1997 he has been with the Department of Physics at the University of Cyprus . His research interests include, Semiconductor Physics, Ultrafast Science, Non-linear optics, Laser Physics, Fiber optics, Photosensitivity in optical waveguides and Fiber Bragg gratings and their applications to telecommunications and sensor based systems.

Over the past two decades there have been tremendous advancements in the field of ultrafast laser technology which opened up new fascinating possibilities based on the unique properties of femtosecond light pulses. Properties, such as, the concentration of the energy in the pulse corresponding to only a few optical cycles, and the high peak powers which reach electric filed strength comparable to those of inner-atomic fields.

One area of physics the ultrafast laser technology had a tremendous impact is semiconductors physics and in particular the understanding of carrier dynamics in semiconductors. The driving force behind this movement other than the basic fundamental interest is the direct application of semiconductor devices and the endless need for faster response and faster processing of information. To improve and develop microelectronics devices and address these needs, the basic understanding of the various dynamical processes in the semiconductors has to be studied in detail. Therefore, the excitation of semiconductors out of their equilibrium and the subsequent relaxation processes with various rates has become a key area of semiconductor research. With the development of lasers that can generate pulses as short as a few femtoseconds the excitation and subsequent probing of semiconductors on an ultrashort timescale have become routine. Processes such as carrier momentum randomization, carrier thermalization and energy relaxation have been studied in detail using excite-and-probe novel techniques.

One of the main objectives of this laboratory will be the study of ultrashort carrier and phonon dynamics in novel semiconductor structures using conventional pump-probe techniques. With the develpment of the laboratory into a Research Center of Ultrafast Science we will be investigating most ultrafast interactions and non linear phenomena in any type of innovative optoelectronic materials and structures.

 

A pump probe experimental l setup at the Research Center of Ultrafast Science at the University of Cyprus (March 2003).

 

 

 

 

 

 

Inscribing fiber Bragg gratings based on an interferometric technique with a narrow linewidth KrF Excimer Laser (University of Toronto 1998).

 

 

An experimental setup for testing the fabrication of integrated circuits using Nd:YAG laser pulses in collaboration with IBM (University of Toronto 1995)

 

 

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