Bessel beam spectral-domain high-resolution optical coherence tomography with micro-optic axicon providing extended focusing range

    Authors

    K. S. Lee;L. P. Rolland

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    LENS; DEPTH; Optics

    Abstract

    Endoscopic imaging in tubular structures, such as the tracheobronchial tree, could benefit from imaging optics with an extended depth of focus (DOF) to accommodate the varying sizes of tubular structures across patients and along the tree within the same patient. Yet the extended DOF needs to be accomplished without sacrificing resolution while maintaining sufficient sensitivity and speed of imaging. In this Letter, we report on the measured resolution and sensitivity achieved with a custom-made micro-optic axicon lens designed to theoretically achieve an 8 rum DOE A measured invariant resolution of similar to 8 mu m is demonstrated across a 4 mm measured DOF using the micro-optic axicon while achieving an invariant sensitivity of similar to 80 dB with a 25 mW input power. Double-pass Bessel beam spectral-domain optical coherence tomography with an axicon micro-optic lens (i.e., < 1 mm in diameter) is, for the first time to our knowledge, demonstrated in a biological sample demonstrating invariant resolution and signal-to-noise ratio across a 4 mm measured DOF, which is compared to Gaussian beam imaging. (c) 2008 Optical Society of America.

    Journal Title

    Optics Letters

    Volume

    33

    Issue/Number

    15

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    1696

    Last Page

    1698

    WOS Identifier

    WOS:000258650200022

    ISSN

    0146-9592

    Share

    COinS