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    • Stephen A. Boppart

    Professor, Department of Electrical and Computer Engineering, Beckman Institute for Advanced Science and Technology

    Stephen A. Boppart is a professor in the Department of Electrical and Computer Engineering at the Beckman Institute for Advanced Science and Technology at the University of Illinois Urbana–Champaign (Urbana, IL).

    (Image courtesy University of Illinois at Urbana–Champaign)
    FIGURE 1. The width of the point-spread functions for interferometric synthetic aperture microscopy (ISAM) and optical coherence tomography (OCT) are shown as a function of distance from focus.
    Bioimaging

    ADVANCED OCT/COMPUTED IMAGING: Depth of field and resolution meet in new OCT approach

    P. Scott Carney
    March 1, 2011
    Depth of field? Resolution? Traditionally, using OCT meant choosing between these two critical parameters. But interferometric synthetic aperture microscopy (ISAM), an advance...
    (Courtesy of University of Illinois at Urbana-Champaign for all images)
    FIGURE 1. The width of the point-spread functions for interferometric synthetic aperture microscopy (ISAM) and optical coherence tomography (OCT) are shown as a function of distance from focus.
    Optics

    SOFTWARE & COMPUTING: Interferometric synthetic aperture microscopy eliminates OCT compromises

    P. Scott Carney
    Jan. 1, 2011
    Optical coherence tomography (OCT) emerged in the early 1990s as the marriage of broadband interferometry and scanning-light microscopy.
    (Courtesy of University of Illinois at Urbana-Champaign)
    FIGURE 1. Optical frequency upconversion of femtosecond pulses is performed via intermodal four-wave mixing from a large-mode-area microstructured fiber (left) and via the Cherenkov radiation from a small-mode-area microstructured fiber (right). Vertical arrows represent the pump wavelength; the insets represent the far-field images of the exiting light from the fibers.
    Fiber Optics

    SPECIALTY FIBERS: Targeted pulse-energy routing in fiber drives nonsupercontinuum applications

    Stephen A. Boppart
    July 1, 2009
    While routing femtosecond pulse energy to a broadband spectrum in optical fibers is important, many emerging nonsupercontinuum applications require selective routing of the pulse...