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Measurement of the temperature dependent emission spectrum from a super luminescent diode with a Fourier transform spectrometer
Umeå University, Faculty of Science and Technology, Department of Physics.
2015 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [en]

A Fourier spectrometer based on the Michelson interferometer is realized to measure and analysis the emission spectrum of a red light emitting diode(LED). Using liquid nitrogen to cool the LED, the temperature dependence of the diodes spectrum was investigated. For room temperature the HWHM (half width half maximum) of the LED was found to be 7.80 nm with a center wavelength at 628.0 nm. For lower temperatures the diode was blue shifted. This phenomenon was attributed to the increase of the width of the forbidden band.

Place, publisher, year, edition, pages
National Category
Atom and Molecular Physics and Optics
URN: urn:nbn:se:umu:diva-117081OAI: diva2:904801
Subject / course
Fysik C - Examensarbete
Available from: 2016-02-19 Created: 2016-02-19 Last updated: 2016-02-19Bibliographically approved

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