Effects of Photonic Crystals on the Light Output of Heavy Inorganic Scintillators
| Autor: | Etiennette Auffray, Paul Lecoq, A. Knapitsch, Xavier Letartre, C.W. Fabjan, Jean-Louis Leclercq, Radoslaw Mazurczyk |
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| Rok vydání: | 2013 |
| Předmět: |
Nuclear and High Energy Physics
Materials science business.industry Physics::Optics Photodetector Light scattering Semiconductor laser theory law.invention Optics Nuclear Energy and Engineering law Optoelectronics Electrical and Electronic Engineering Reactive-ion etching business Rigorous coupled-wave analysis Electron-beam lithography Photonic crystal Light-emitting diode |
| Zdroj: | IEEE Transactions on Nuclear Science. 60:2322-2329 |
| ISSN: | 1558-1578 0018-9499 |
| DOI: | 10.1109/tns.2013.2262574 |
| Popis: | Photonic crystals (PhCs) are optical materials which can affect the propagation of light in multiple ways. In recent years PhCs contributed to major technological developments in the field of semiconductor lasers, light emitting diodes and photovoltaic applications. In our case we are investigating the capabilities of photonic crystal slabs with the aim to improve the performance of heavy inorganic scintillators. To study the combination of scintillators and PhCs we use a Monte-Carlo program to simulate the light propagation inside a scintillator and a rigorous coupled wave analysis (RCWA) framework to analyse the optical PhC properties. The simulations show light output improvements of a wide range of scintillating materials due to light scattering effects of the PhC slabs. First samples have been produced on top of 1.2 × 2.6 × 5 mm LSO (cerium-doped Lutetium Oxyorthosilicate, Lu2SiO5:Ce3+) scintillators using electron beam lithography and reactive ion etching (RIE). Our samples show a 30-60% light output improvement when compared to unstructured reference crystals which is in close accordance with our simulation results. In addition, a theoretical investigation of the restrictions of the current PhC sample is given which concludes with prospects for improved future designs. |
| Databáze: | OpenAIRE |
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