2013-2014 COLLOQUIUM LECTURE SERIES ARCHIVE

Provided below are the 2013-2014 academic year College of Optical Sciences Colloquium lectures. The current lecture series can be found on the main Colloquium page.

2013-2014

  • Thursday, September 26, 2013 - 3:30pm - 5:00pm
    "Optical Quantum Communications — What to Expect"

    Optical quantum communications and quantum key distribution have been considered the most secure forms of data transmission since it was determined that two parties communicating thusly could detect the presence of any third party attempting to access their exchanges. The detection of such...

  • Thursday, October 3, 2013 - 3:30pm - 5:00pm
    "Endoscopic Optical Imaging: A New Hope for Ovarian Cancer Screening?"

    Optical methods of investigating tissue have the advantages of high sensitivity, high resolution, relatively low cost and ability to sense both structural and biochemical characteristics of tissue. The limited penetration depth of light can be partially offset by endoscopic delivery using...

  • Thursday, October 10, 2013  
    Conflict with the Optical Society's Frontiers in Optics conference.

  • Thursday, October 17, 2013 - 3:30pm - 5:00pm
    "Extreme Nonlinear Optics in Atoms and Semiconductors"

    For ultrashort pulses with very high field amplitudes, light-matter interaction enters the regime of "extreme nonlinear optics." In this talk, we will discuss a range of recently observed phenomena, including very-high harmonic generation and strong field ionization of atoms as well as...

  • Thursday, October 24, 2013 - 3:30pm - 5:00pm
    "Optics and Image Science in Cancer Research and Clinical Care"

    Imaging and image science are advancing rapidly and being applied in ever more effective ways to answer basic questions in cancer biology and to improve the diagnosis and treatment of cancer patients. The Cancer Imaging Program is one of four core scientific programs at the University of Arizona...

  • Thursday, October 31, 2013 - 3:30pm - 5:00pm
    "From Diamond Defects to Clever Plants: Mapping Energy Flow with Ultrafast Optical Spectroscopy"

    Ultrafast electronic spectroscopy connects the spatial, temporal and dynamic landscapes of complex systems. These connections are essential to our understanding of structure-function relationships and energy transport. Using two-dimensional electronic spectroscopy, or 2DES, we can map the flow...

  • Thursday, November 7, 2013 - 3:30pm - 5:00pm
    "How Small Can One Shrink a Laser?"

    There has been a recent surge in activity devoted to development of nanoscale lasers, particularly lasers employing surface-plasmon polaritons in metal dielectric structures. In my talk I will review recent efforts and present a theory to clearly outline the fundamental limits of how small the...

  • Thursday, November 14, 2013 - 3:30pm - 5:00pm
    "Seeing Through Clutter and Moving Things with Light"

    I present three topics in which motion is a consequence of the application of light or is exploited in an imaging method.

    • I describe a method to measure nanometer distances through heavy scatter using fluorescent (Förster) resonance energy transfer. This could allow in vivo...
  • Thursday, November 21, 2013 - 3:30pm - 5:00pm
    "Calculations and Controversy, a Difficult Journey: Lens Design Through the Ages"

    Dilworth will provide a travel through history, showing how insights and preconceptions have aided and hindered the long attempt to master the arts of lens design and optical science. The talk starts with the invention of the lens and ends with the most recent advances in computer-aided lens...

  • Thursday, December 5, 2013 - 3:30pm - 5:00pm
    Ga-Free InAs/InAsSb type-II superlattice: its past, present and future

    This talk will review the past research on Ga-free InAs/InAsSb type-II superlattices, especially their growth, structural and electronic properties, and devices. Then it will focus on the recent processes in the MBE growth, the study of structural and optical properties, and device demonstration...

  • Thursday, January 23, 2014 - 3:30pm - 5:00pm
    "Imaging Particles from Radioactive Decay and Applications for Medical Imaging"

    This talk will present an overview of a high-resolution imaging technology that we call iQID (ionizing-radiation Quantum Imaging Detector). IQID is sensitive to a broad range of particles emitted during radioactive decay. These include gamma-ray and X-ray photons as well as alpha, beta and...

  • Thursday, January 30, 2014 - 3:30pm - 5:00pm
    "Thoughts on Computational/Compressive Imaging"

    Compressive imaging exploits the redundancy present in natural scenes in order to reduce the number of samples required for image reconstruction. The seminal work of Donohoe and others have provided rigorous mathematical results relating the redundancy of the scene (i.e., signal sparsity) to...

  • Thursday, February 13, 2014 - 3:30pm - 5:00pm
    "The Singularities of Light: Intensity, Phase, Polarization"

    Geometry dominates modern optics, in which we understand light through its singularities. These are different at different levels of description. The coarsest level is geometrical optics, where the singularities are caustics: focal lines and surfaces: the envelopes of ray families. These...

  • Thursday, February 20, 2014 - 3:30pm - 5:00pm
    "Hidden Momentum"

    Electromagnetic fields carry energy, momentum and even angular momentum. The momentum density is ε0(E×B), and it accounts (among other things) for the pressure of light. But even static fields can harbor momentum, and this would appear...

  • Thursday, February 27, 2014 - 3:30pm - 5:00pm
    "Optical Tweezers Throughout the Years"

    The development of optical tweezers from a simple focused laser beam to multiple traps and feedback-controlled constant-force traps will be discussed. Examples of their use in a variety of experiments in statistical mechanics, biology and single-molecule biophysics will be presented, from...

  • Thursday, March 6, 2014 - 3:30pm - 5:00pm
    "Nano-Optomechanics in the High-Frequency Regime: Exploration at the Boundary Between Photonics, Mechanics and Microwaves"

    The mechanical effect of light was discovered a long time ago and has been utilized to cool and trap atoms. Recently, such optomechanical effects are also realized in systems where the mechanical element is a macroscopic object. These optomechanical systems have great potential for fundamental...

  • Thursday, March 13, 2014 - 3:30pm - 5:00pm
    Relating Wavefront Error, Apodization and the Optical Transfer Function

    The Pupil Function is defined by the amplitude transmission of the pupil and the wavefront errors introduced by the optical system.  The incoherent Optical Transfer Function (OTF) describes the contrast degradation and potential phase shift of sinusoidal objects of all spatial frequencies...

  • Thursday, March 27, 2014 - 3:30pm - 5:00pm
    "Imaging the Elastic Properties of Tissue"

    After 20 years of innovation in techniques that specifically image the biomechanical properties of tissue, the evolution of elastographic imaging can be viewed from its infancy, through a proliferation of approaches to the problem, to incorporation in research and then clinical imaging platforms...

  • Thursday, April 3, 2014 - 3:30pm - 5:00pm
    "Photophysics of Carbon-based Semiconductors and Carbon Nanostructures"

    Recent commercialization of flexible, variable-color organic light-emitting diodes based on carbon-based polymers and small molecules has demonstrated the technological impact, current and potential, of these materials. Tremendous progress has also been achieved using their applications as...

  • Thursday, April 10, 2014 - 3:30pm - 5:00pm
    "Imaging Electronic Properties of Two-Dimensional Materials"

    Two-dimensional materials such as graphene and transition metal dichalcogenides are being extensively studied for potential electronic and optical applications. Recently it has become possible to create heterostructures of these materials in order to create designer bandstructures. Spatially...

  • Thursday, April 17, 2014 - 3:30pm - 5:00pm
    Advances in Organic Nonlinear Photonics

    We will discuss recent advances in organic nonlinear photonics that have come about through a combination of innovative molecular engineering, creative device design and new characterization tools.  We will highlight work on ultrahigh electro-optic coefficient (> 200pm/V) electro-optic...

  • Thursday, April 24, 2014 - 3:30pm - 5:00pm
    "Advances in Augmented Reality Displays"

    An augmented reality display, which enables the ability to overlay computer-generated imagery on a person’s real-world view, has long been portrayed as a transformative technology to redefine the way we perceive and interact with digital information. With the rapidly increased bandwidth of...