Title

Spectral shaping to improve the point spread function in optical coherence tomography

Authors

Authors

A. C. Akcay; J. P. Rolland;J. M. Eichenholz

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

RESOLUTION; Optics

Abstract

We demonstrate inhibition of the sidelobes of the axial point spread function in optical coherence tomography by shaping the power spectrum of the light source with a remaining power of 4.54 mW. A broadband amplified spontaneous emission source radiating at 1565 +/- 40 nm is employed in a free-space optical coherence tomography system. The axial point spread functions before and after optical spectral shaping are presented. Results show that spectral shaping of the source can inhibit sidelobes of the point spread function up to 12.9 dB, with an associated small increase of 2.2 dB in noise floor in the far field. The effect of spectral shaping on axial resolution is demonstrated according to three metrics. Image quality improvement is also illustrated with optical coherence tomography images of an onion before and after spectral shaping. (C) 2003 Optical Society of America.

Journal Title

Optics Letters

Volume

28

Issue/Number

20

Publication Date

1-1-2003

Document Type

Article

Language

English

First Page

1921

Last Page

1923

WOS Identifier

WOS:000185746300021

ISSN

0146-9592

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