The paper presents a procedure and laboratory setup for calibration of extreme ultraviolet detectors. The procedure
determinates a responsivity of a photodiode applied in the technology of EUV radiation. The main elements of the
described system are a gas-puff laser plasma source, metrology chamber with an optical beam splitter and a model
instrument. The applied measurement method is based on a comparison of the detected signals from the model
instrument and the tested detector. The reduction of an error resulting from instabilities of the source radiation is
ensured using a special construction of the optical beam splitter. Because of the cost and the metrology features,
the presented setup is future alternative for small factories and laboratories producing EUV detectors. In the paper,
analysis and preliminary research of the setup are described.
The paper presents the continuous monitoring system concept of fiber optic transmission lines. It describes the refectometric method for testing optical links and apply of WDM multiplexers providing remote attenuation measurements of the tested fibers during link operation, without the transmission interruption.
In the paper, we present UV-detection system and it¢s noise model. It consist of GaN photodiode produced by ITME in Warsaw, and low noise preamplifier. The Schotttky barrier MSM and p-π-n visible blind detectors on gallium nitride were used. The main purpose was to analyse the first stage of UV receiver (photodetector plus low noise preamplifier) to optimise them providing maximal value of signal-to-noise ratio.
The sections of ferrite coupled lines with longitudinal magnetization (FCL) play important role in novel class of integrated nonreciprocal devices. The circulator is designed for instance as a cascade of a section of FCL and T-hybrid. In this paper a slot line FCL is developed and applied in design of the circulator. The simulated behavior of the FCL indicates the Faraday's rotation phenomenon performing a periodical exchange of em wave energy between the coupled lines of the structure. It also predicts that a section of FCL with pi/4 rotation is useful for circulator design. The FCL circulator was designed and produced in finline technology. The measured parameters of the circulator agree well with the ones theoretically predicted.
Conference Committee Involvement (1)
Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2009