Design of pupil filter for extended depth of focus and lateral superresolution in optical coherence tomography

Evgenia Bousi; Stelios Timotheou; Costas Pitris

doi:10.1117/12.2041967

4 March 2014 Design of pupil filter for extended depth of focus and lateral superresolution in optical coherence tomography

Evgenia Bousi, Stelios Timotheou, Costas Pitris

Author Affiliations +

Proceedings Volume 8934, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVIII; 893435 (2014) https://doi.org/10.1117/12.2041967
Event: SPIE BiOS, 2014, San Francisco, California, United States

Abstract

A seven-zone pupil filter which can extend the depth of focus (DOF) and provide lateral super resolution in Optical Coherence Tomography is designed. Both amplitude and phase of the transmitted light beam are modified in each zone. The scalar diffraction theory is used to optimize the zone parameters. A broadband source spectrum and a Gaussian beam profile has been taken into account for the design of this filter. Several filters have been reported to extend the depth of focus (DOF) and improve the resolution but they take the assumption that a monochromatic and uniform light beam is used. With the proposed filter the DOF in OCT can be extended by 14 times while the lateral resolution can be improved by a factor of 1.47 and maintained constant within this DOF.

Citation Download Citation

Evgenia Bousi, Evgenia Bousi, Stelios Timotheou, Stelios Timotheou, Costas Pitris, Costas Pitris, "Design of pupil filter for extended depth of focus and lateral superresolution in optical coherence tomography", Proc. SPIE 8934, Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XVIII, 893435 (4 March 2014); doi: 10.1117/12.2041967; https://doi.org/10.1117/12.2041967

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years