Statistics of the depth-scan photocurrent in time-domain optical coherence tomography

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Sherif S Sherif (Autor) Outra; Carla C Rosa (Autor) FCUP; Costel Flueraru (Autor) Outra; Shoude D Chang (Autor) Outra; Youxin X Mao (Autor) Outra; Adrian G Podoleanu (Autor) Outra

Revista

Título: Journal of the Optical Society of America A: Optics and Image Science, and Vision

Vol. 25

Páginas: 16-20

ISSN: 1084-7529

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 5 Citações

Scopus - 7 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-004-3ZQ

DOI: 10.1364/josaa.25.000016

Abstract (EN): We derive the time-variant second-order statistics of the depth-scan photocurrent in time-domain optical coherence tomography (TD-OCT) systems using polarized thermal light sources and superluminescent diodes (SLDs). Since the asymptotic-joint-probability-distribution function (JPDF) of the photocurrent due to polarized thermal light is Gaussian and the signal-noise-ratio in TD-OCT is typically high (> 80 dB), the JPDF of the depth-scan photocurrent could be approximated as a Gaussian random process that is completely determined by its second-order statistics. We analyze both direct and differential light detection schemes and include the effect of electronic thermal fluctuations. Our results are a necessary prerequisite for future development of statistical image processing techniques for TD-OCT. (c) 2007 Optical Society of America.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 5