Title | A comparison of g((1)) (tau), g((3/2))(tau), and g((2))(tau) for radiation from harmonic oscillators in Brownian motion with a coherent background |
Publication Type | Journal Article |
Year of Publication | 2020 |
Authors | A.. Siciak, M.. Hugbart, W.. Guerin, R.. Kaiser, and L.. A. Orozco |
Journal | Phys. Scr. |
Volume | 95 |
Pagination | 104001 |
Date Published | OCT |
Type of Article | Article |
ISSN | 0031-8949 |
Keywords | astrophysics, field correlation, intensity correlation, intensity-field correlation, Statistical Physics |
Abstract | We compare the field-fieldg((1))(tau), intensity-fieldg((3/2))(tau), and intensity-intensityg((2))(tau) correlation functions for models that are of relevance in astrophysics. We obtain expressions for the general case of a chaotic radiation, where the amplitude is Rician based on a model with an ensemble of harmonic oscillators in Brownian motion. We obtain the signal to noise ratios for two methods of measurement. The intensity-field correlation function signal to noise ratio scales with the first power of vertical bar g((1))(tau). This is in contrast with the well-established result of g((2))(t)((2))(tau) which goes as the square of vertical bar g((1))(tau)vertical bar. |
DOI | 10.1088/1402-4896/abac37 |