Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/123716
Title: STELLAR TEMPORAL INTENSITY INTERFEROMETRY
Authors: TAN PENG KIAN
Keywords: intensity interferometry, photon bunching, blackbody radiation, second order correlation, spectral filtering
Issue Date: 30-Dec-2015
Source: TAN PENG KIAN (2015-12-30). STELLAR TEMPORAL INTENSITY INTERFEROMETRY. ScholarBank@NUS Repository.
Abstract: We present a narrowband 2GHz spectral filtering scheme that allows direct measurements of the Lorentzian temporal correlations, or photon bunching, from the Sun, with the peak g(2)=1.693+/-0.003, limited mostly by detector response, compared to theoretical bound of g(2)=2. To study possible effects of atmospheric turbulence, the instruments were used to measure the Sun, covering elevation angles across 50 degrees, corresponding to different depths of atmospheric air column, which were compatible with control measurements of an Argon arc lamp with peak g(2)=1.687+/-0.004. The instruments were exposed to a mixture of blackbody radiation from an Argon arc lamp with laser light at 513.8nm. The instruments were able to identify the presence of a coherent laser signature, as well as determining the linewidth of Doppler-broadened laser light to around 23MHz. These results suggest that the narrowband spectral filtering technique developed here may be useful for revisiting intensity correlation measurements in astronomy.
URI: http://scholarbank.nus.edu.sg/handle/10635/123716
Appears in Collections:Ph.D Theses (Open)

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