|Web based magazine, No.1, March 15, 2006|
National Centres of Excellence
Photonics is based on quantum physics and electromagnetism. To the development of photonics and its applications it is necessary to analyse nonlinear optical processes involved and investigate suitable materials for light generation, guiding and detection. Modern semiconductor photonics is practically limited to semiconductor materials and phenomena occurring in quantum structures. Thus it combines basic physics with nanotechnology. This combination leads to a vast number of innovative research often leading to applications which have a great influence on our everyday life. Photonics seems to be technology of the 21 century, in a sense as microelectronics did in 20 century. In particular, laser light sources and detection devices are rapidly expanding area of applications.
The project combines the scientific, technological and applied objectives with broad range of educational and promotional activities. The main objectives of the Center are:
The Center activities comprise
The mission of the center and its main objectives are to rise the basic research in photonics to European standards and enhance processes of technology transfer to the industry. We also act as the educational center for students, PhDs and engineers from industry, making them aware of new technologies and devices. Thus novelty of the Center is related not only to the innovative research we propose but also to the general approach to solving technical problems and creating models for technology transfer to the industry.
The Center of excellence CEPHONA consists of four departments:
Department of Physics and Technology of Low Dimensional Structures
The activities of the Department of Physics and Technology of Low Dimensional Structures are focused on the development of new photonic device technologies, in particular semiconductor lasers (edge emitting and VCSELS) and microcavity devices. We have very strong research in the field of physics and technology of low dimensional structures made of III-V compounds and a broad spectrum activities in the field of material characterization by optical and electrical metchods.
Department of Semiconductors Processing for Photonics
The activities of the Department of Semiconductors Processing for Photonics are focused on the development of new process technologies and device architectures. Facilities include Leybold L-560 Universal Coating System including 4-crucible e-gun and RF sputtering station, three Leybold sputtering systems (Z-400, L400, Z550S), Balzers UTS 350 UHV evaporation system; Oxford Instruments DP 100 PECVD deposition module, Karl Suss MJB-21 double side and MJB-3 DUV mask aligners, Raith Elphy Plus e-beam lithography system, Secon MK-4 RIE system, wet chemical stations; AST SHS 100 RTP system, conventional furnaces for annealing in H2, N2, Ar or O2, extensive facilities for electrical and optical characterisation (including WASE ellipsometry), Tencor® Alpha-step stylus profiler and Tencor® FLX-2320 thin film stress measurements system.
Department of Semiconductor Materials and Structure Research
aboratory of Electron Microscopy is a part of the Department of Semiconductor Materials and Structure Rese-arch. It consists of two facilities a transmission electron microscopy (TEM) facility and a scanning electron microscopy (SEM) facility. The TEM facility is equipped with the transmission electron microscope JEM 200CX and a wide range of speci-men preparation tools allowing to prepare localized cross-sections from semiconductor nanolayers structures, including hard materials like SiC.
The SEM facility is equipped with the scanning electron microscope XL-30 with CL detector (operating in a range 400-1300 nm), BSE detectors and EDX spectrometer (detecting light elements), specimen current detector (EBIC).
The activities of the Department of Photodetectors are focused on the development of new process technologies and devices for light detection in the visible and near infrared region. The detectors developed in the department are produced and sold both in Poland and abroad. Among many achievements of the department is recent award of President of the Republic of Poland for the development of silicon avalanche photodiodes.