Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/55377
Title: Spectral effects of phosphor-based white light-emitting-diode (LED) in coherence scanning interferometry
Authors: Chong, Wee Keat
Keywords: DRNTU::Science::Physics::Optics and light
Issue Date: 2014
Source: Chong, W. K. (2014). Spectral effects of phosphor-based white light-emitting-diode (LED) in coherence scanning interferometry. Doctoral thesis, Nanyang Technological University, Singapore.
Abstract: Phosphor-based white light emitting diode (LED) is made out of blue LED and yellow phosphor, so there are two peaks in its spectrum. Compared to prior works, the spectral effect has been either neglected or suppressed. Hence this research investigates the spectral effects of phosphor-based white LED in coherence scanning interferometry. Instead of suppressing or neglecting the spectral effect of phosphor-based white LED, this research work investigates the spectral effects of phosphor-based white LED with the aim to improve the usability and performance of coherence scanning interferometry: First, a signal modeling for coherence scanning interferometry which expresses the signal in elementary form is proposed. It is then followed by applying the proposed signal model to investigate and give a theoretical explanation of the spectral effects of phosphor-based white LED in coherence scanning interferometry. With the proposed theoretical explanation, the spectral effects are harnessed to improve the usability and performance of coherence scanning interferometry. We believe that the results reported in this thesis will draw further research in the spectral effects in coherence scanning interferometry and the associated spectral manipulations.
URI: https://hdl.handle.net/10356/55377
DOI: 10.32657/10356/55377
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Theses

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