Colloquium

The OSC Colloquium series is a dynamic forum for the interchange of ideas, techniques and research in all areas of optics, wherein academic scholars and industry leaders lead discussions about groundbreaking research and open the floor to questions and comments. Students, faculty members, members of the optics community and the public are all invited to attend.

Colloquium is held on Thursday in Meinel 307 each week during the academic year.

Fall 2017 Lectures

  • Thursday, April 26, 2018 - 3:30pm - 5:00pm
    Infrared laser spectroscopy for rapid chemical sensing

    Infrared laser spectroscopy is a technique which measures characteristic vibrational and rotational absorption resonances for nearly any molecule, in both gas- and condensed-phases.  However, turning this technique into a practical and reliable sensor system presents many challenges. ...

  • Thursday, April 19, 2018 - 3:30pm - 5:00pm
    When Like meets Unlike: Electronic Structure and Dynamics at Interfaces

    Molecular interfaces play a dominant role in much of Chemistry, and are of vital importance in diverse applications such as sensing, catalysis and electron transfer. Yet the mere fact of coupling two fundamentally different materials, e.g. a molecular solid with an inorganic substrate, makes...

  • Thursday, April 12, 2018 - 3:30pm - 5:00pm
    Fourier ptychographic imaging via neural network modeling

    Fourier ptychography is a recently developed phase retrieval approach for large field-of-view and high-resolution microscopy. This technique stitches together many variably illuminated, low-resolution measurements in the Fourier space to expand the frequency passband and recover the high-...

  • Thursday, April 5, 2018 - 3:30pm - 5:00pm
    Synthesizing Light

    Frequency synthesis is ubiquitous in all aspects of our modern technological society, with examples being found in wide ranging applications from computing, communications and navigation systems to sensors and scientific instrumentation. Historically, the generation and precise control of...

  • Thursday, March 29, 2018 - 3:30pm - 5:00pm
    Embracing Disorder in Optics: Anderson Localization Optical Fibers

    Anderson localization has been a subject of fascination and intense research for nearly sixty years. It is highly desirable to harness its curious and interesting properties in practical applications. We have taken a step in this direction by using this phenomenon as the waveguiding mechanism in...

  • Thursday, March 22, 2018 - 3:30pm - 5:00pm
    The Path to Freeform Optics, Diamond Turned Optics from the perspective of II-VI Infrared

    Following a brief introduction to the II-VI organization, this presentation will describe how, over the past 25 years, the advancing technology needs of the CO2 Industrial Laser Market drove II-VI to be an early adopter of freeform diamond turning technologies including Fast Tool Servo (FTS) and...

  • Thursday, March 15, 2018 - 3:30pm - 5:00pm
    Photonic quantum computing and applications

    In the cluster model of quantum computing, any quantum algorithm can be implemented by an adaptive sequence of measurements at the nodes of a graph, where the nodes are qubits (photons in our case) and edges between two nodes represent entanglement. An entangled cluster in a 2D square lattice...

  • Thursday, March 1, 2018 - 3:30pm - 5:00pm
    Phase Measuring Interferometry – Roles in the microelectronics revolution and astronomy

    The microelectronics revolution has been ongoing now for more than 50 years.  The pace of progress, described as “Moore’s Law”, is an observation and expectation of microcircuit performance and value that doubles every two years.  My talk will focus on the evolution...

  • Thursday, February 22, 2018 - 3:30pm - 5:00pm

  • Thursday, February 15, 2018 - 3:30pm - 5:00pm
    Laser Applications in Vision Correction and Cataract Surgeries

    This presentation is an overview of femtosecond laser applications in refractive vision correction surgeries and laser cataract surgeries. I will also discuss briefly about how an engineering student can transition effectively to a performer in the industry.

  • Thursday, February 8, 2018 - 3:30pm - 5:00pm
    All-Optical Switching for Photonic Quantum Networks

    Quantum internet of the future will require device functionalities that implicitly respect the fundamental facts such as quantum information cannot be copied, and cannot be measured precisely. A quantum repeater, for example,—analog of an optical amplifier that enabled global reach of the...

  • Thursday, February 1, 2018 - 3:30pm - 5:00pm
    Engineering Atom-Light Interactions in Photonic Crystal Waveguides

    Integrating cold atoms with nanophotonics enables the exploration of new paradigms in quantum optics and many body physics. Advanced fabrication capabilities for low-loss dielectric materials provide powerful tools to engineer band structure and light-matter couplings between photons and atoms....

  • Thursday, January 25, 2018 - 3:30pm - 5:00pm
    Exploring Quantum Measurement with Nanomechanics and Light

    Nanomechanical resonators are exquisite force sensors.  In a new generation of experiments, they have even been used to “feel” the vacuum fluctuations of a laser field.  This talk addresses the opposite side of the coin: can the same laser be used to “see” the...

  • Thursday, January 18, 2018 - 3:30pm - 5:00pm
    Spectrally encoded confocal microscopy for comprehensive and low-cost in vivo cellular imaging

    Spectrally encoded confocal microscopy (SECM) uses a diffraction grating and broadband light source to conduct line confocal imaging without using any beam scanning device. SECM has two major advantages over conventional confocal microscopy devices: i) imaging speed can be increased by orders of...

  • Thursday, January 11, 2018 - 3:30pm - 5:00pm
    Hexagon KH-9 Spy Satellite

    Mr. Pressel’s lecture covers the design and importance of the Hexagon KH-9 Spy satellite that helped keep the peace during the cold war from 1971 to 1986. It was the last film based spy satellite. The program was declassified by the NRO/CIA in 2011.The Hexagon satellite was an invaluable...

  • Thursday, November 30, 2017 - 3:30pm - 5:00pm
    Hiding Signals in Noise: Fundamental Limits of Covert Communication and Sensing

    Hiding transmitted signals is of paramount importance in many communication and sensing settings. In communications, traditional security (e.g., encryption) prevents unauthorized access to message content; however, detection of the mere presence of a message can have significant negative impact...

  • Thursday, November 16, 2017 - 3:30pm - 5:00pm
    Rendering Focus Cues in Head-Mounted Displays for Virtual and Augmented Reality Displays

    A head-mounted display (HMD), also known as head-worn display, is one of the key enabling technology for the emerging virtual reality (VR) and augmented reality applications. Among the many challenges of developing HMDs, minimizing visual discomfort is one of the key obstacles. One of the key...

  • Thursday, November 9, 2017 - 3:30pm - 5:00pm
    The applications of micro-interferometer in optical communication

    Optical fiber communication is a rapid-growth industry in the past 25 years, for it provides enormous bandwidth, and the optical fiber is the only medium which can transport massive amounts of data over long distance. Combining the DWDM (Dense-Wavelength-Division-Multiplexing) technology and the...

  • Thursday, November 2, 2017 - 3:30pm - 5:00pm
    Highlights of my 51 Years in Optical Design

    Dave Shafer will show many examples of interesting optical design projects from his long career (still going, by the way).  These include a formerly top secret new way to detect the presence of Russian submarines, with technology that can now - 50 years later - be bought for $50 on the...

  • Thursday, October 26, 2017 - 3:30pm - 5:00pm
    Shedding light on 3D living systems

    Fluorescence microscopy allows targeted observation of structures and molecular processes in living systems. It provides essential information for understanding how biological systems function.  3D imaging the dynamics of a living system is challenging due to tissue scattering, a limited...

  • Thursday, October 19, 2017 - 3:30pm - 5:00pm
    Miniature Optical Endoscopes for Early-Stage Cancer Detection

    With multiple mechanisms of contrast, high sensitivity, high resolution, and the possibility to create miniature, inexpensive devices, light-based techniques have tremendous potential to positively impact cancer detection and survival. Many organs of the body can be reached in a minimally-...

  • Thursday, October 12, 2017 - 3:30pm - 5:00pm
    Who was Aden Meinel?

    At the U of A, Meinel is best known as the founder of the College of Optical Sciences. But before he came to the University of Arizona, first as Department Chair of Steward Observatory and then chair of the optical sciences center he was the founding director of Kitt Peak National Observatory...

  • Thursday, October 5, 2017 - 3:30pm - 5:00pm
    Holographic Applications in Medical Imaging and Photovoltaic Energy Systems

    Volume holographic optical elements have a number of features that can provide new functionality to optical systems. In this presentation a review of some of these features will be presented. Following the introduction two different systems with very different requirements will be considered and...

  • Thursday, September 28, 2017 - 3:30pm - 5:00pm
    Harnessing ultrashort optical pulses

    Ultrashort optical pulses have found important applications in material processing, precision measurements, time keeping, and multiphoton microscopy. In this presentation, I will discuss our research results in the development of compact fiber lasers that emit ultrashort optical pulses in the...

  • Thursday, September 21, 2017 - 3:30pm - 5:00pm
    Isotopic analysis of solids using optical spectroscopy of laser-produced plasmas

    Currently, isotopic analysis of nuclear materials is predominantly laboratory based (mass spectroscopy) which is time consuming and not useful for field applications. Optical spectroscopic methods (emission, absorption, fluorescence) in conjunction with laser ablation sampling have the potential...

  • Thursday, September 14, 2017 - 3:30pm - 5:00pm
    Quantum Control versus Chaos

    Quantum mechanics has been the "theory of everything" for about a century, accounting for the behavior of light and matter at all scales from the microscopic to the macroscopic. Modern physics is now increasingly focused on a new challenge: how do we make quantum systems behave the way...

  • Thursday, September 7, 2017 - 3:30pm - 5:00pm
    Macromolecular Data Storage

    Many of the traditional problems in disk and tape data storage can be overcome if data-blocks were to be released from the confines of a disk (or tape) and allowed to float freely between read/write stations (i.e., heads) and permanent "parking spots." The heads and parking spots thus...

  • Thursday, August 31, 2017 - 3:30pm - 5:00pm
    Single Molecule Detection with Microtoroid Resonators

    Label-free single molecule detection has been a long-standing goal of bioengineers and physicists. The main obstacle in the detection of single molecules, however, is to sufficiently decrease the noise level of the measurements such that a single molecule can be distinguished from background...