Measurement of the emission spectrum from a super luminescent white diode with a Fourier transform spectrometer
Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
A Fourier transform spectrometer (FTS) was constructed to analyze the light of a white LED. The spectrometer utilizes re-sampling with the help of a reference interferogram from a HeNe laser. The resolution was estimated from the measured line width of the re-sampled HeNe laser and was found to be in the order of 0.4 nm. The spectrum collated from the white diode had a signal to noise ratio of 350 which was more than sufficient for our purposes. The measured spectrum point towards the light being produced by a combination of red and blue LED:s and a phosphor layer of YAG:Ce providing the green-yellow colors.
Place, publisher, year, edition, pages
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:umu:diva-117082OAI: oai:DiVA.org:umu-117082DiVA: diva2:904807
Subject / course
Fysik C - Examensarbete