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Fabry-Pérot Interferometer : construction, calibration and developement
The work presented in this thesis concentrates on the construction and development of a Fabry-Perot Interferometer (FPI). Resonance ionization spectroscopy (RIS) is a powerful technique for the extraction of nuclear structure, namely nuclear spins, moments and changes in mean-square charge radii. However, due to the pulsed nature of the laser, the technique may be limited by the laser linewidth to low resolution spectroscopy. This thesis presents the construction and characterization of a Fabry-Perot Interferometer in order to measure the laser linewidth and to calibrate the wavelength of a pulsed Ti:Sapphire laser in "Narrowband" mode (<1 GHz). The FPI has been directly utilized in the measurements of optical transitions via resonance ionization spectroscopy of copper.
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Development of a saturated absorption spectroscopy setup at IGISOL for characterisation of Fabry-Pérot interferometers Geldhof, Sarina; El Youbi, Sara; Moore, Iain; Pohjalainen, Ilkka; Sonnenschein, V.; Terabayashi, R.; Voss, Annika (Springer Netherlands, 2017)A saturated absorption spectroscopy setup was developed and optimised for the characterisation of a home-built and a commercial Fabry-Pérot interferometer (FPI). The free spectral range of these FPIs has been determined ...
Resonance laser ionization developments for IGISOL-4 Reponen, Mikael (University of Jyväskylä, 2012)The work presented in this thesis concentrates on the development of the FURIOS laser ion source towards e cient and selective production of low energy radioactive ion beams. This includes design and development of the ...
Discovering knowledge in various applications with a novel hyperspectral imager Pölönen, Ilkka (University of Jyväskylä, 2013)
Miniature MOEMS hyperspectral imager with versatile analysis tools Trops, Roberts; Hakola, Anna-Maria; Jääskeläinen, Severi; Näsilä, Antti; Annala, Leevi; Eskelinen, Matti; Saari, Heikki; Pölönen, Ilkka; Rissanen, Anna (SPIE, The International Society for Optical Engineering, 2019)The Fabry-Perot interferometers (FPI) are essential components of many hyperspectral imagers (HSI). While the Piezo-FPI (PFPI) are still very relevant in low volume, high performance applications, the tunable MOEMS FPI ...
Hyperspectral Imaging of Macroinvertebrates : a Pilot Study for Detecting Metal Contamination in Aquatic Ecosystems Salmelin, Johanna; Pölönen, Ilkka; Puupponen, Hannu-Heikki; Hämäläinen, Heikki; Karjalainen, Anna; Väisänen, Ari; Vuori, Kari-Matti (Springer Netherlands, 2018)The applicability of spectral analysis in detection of freshwater metal contamination was assessed by developing and testing a novel hyperspectral imaging (HSI) application for aquatic insect larvae (Trichoptera: ...