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 2021 & Spring 2022 Lectures

  • Thursday, April 28, 2022 - 3:30pm - 5:00pm

  • Thursday, April 21, 2022 - 3:30pm - 5:00pm

  • Thursday, April 14, 2022 - 3:30pm - 5:00pm

  • Thursday, April 7, 2022 - 3:30pm - 5:00pm

  • Thursday, March 31, 2022 - 3:30pm - 5:00pm

  • Thursday, March 24, 2022 - 3:30pm - 5:00pm

  • Thursday, March 17, 2022 - 3:30pm - 5:00pm

  • Thursday, March 3, 2022 - 3:30pm - 5:00pm

  • Thursday, February 24, 2022 - 3:30pm - 5:00pm

  • Thursday, February 17, 2022 - 3:30pm - 5:00pm

  • Thursday, February 3, 2022 - 3:30pm - 5:00pm

  • Thursday, January 20, 2022 - 3:30pm - 5:00pm
    Title: “Imaging Through Optical Fibers for Hair-Thin Endo-Microscopes”

    Optical endoscopes are widely used in medicine to identify early-stage cancers in accessible parts of the body, such as the gastrointestinal tract, enabling early treatment and better patient outcomes. However, the next generation of endoscopes must overcome two key challenges to have a truly...

  • Thursday, December 2, 2021 - 3:30pm - 5:00pm
    Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Differential phase contrast imaging can provide direct access to electron density, and dark field (or small angle scatter) contrast enables access to surface and texture details significantly below the detector resolution. These new imaging capabilities...

  • Thursday, November 18, 2021 - 3:30pm - 5:00pm
    OSC Colloquium Lecture presented by Dr. Michael Raymer Topic:  Quantum Enhanced Telescopy: Very Long Baseline Interferometric Imaging using Single-Photon States as a Nonlocal Oscillator Host:  Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Recent proposals suggest that distributed single photons serving as a ‘nonlocal oscillator’ can outperform weak coherent states as a phase reference for long-baseline interferometric imaging (VLBI) of weak sources. [1, 2] Such nonlocal quantum states distributed between...

  • Tuesday, November 9, 2021 - 3:30pm - 5:00pm
    Colloquium Lecture by Dr. Kang-Kuen Ni Topic:  Building single molecules atom-by-atom in optical tweezers Host:  Dalziel Wilson   Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Optical tweezers, made from tightly focused laser beams are versatile tools to manipulate small particles for studies in physics, chemistry, and biology.   In this talk I will focus on an application where we use tweezers to grab single atoms from a laser-cooled ensemble and assemble...

  • Thursday, November 4, 2021 - 3:30pm - 5:00pm
    Title: The Mysterious Lives of Speckles: Defining the fundamental limits of ground-based coronagraph performance and achieving them with MagAO-X

    Our ability to image extrasolar planets is limited by the spatially and temporally correlated noise source called "speckles".  Speckles are copies of the point spread function (PSF) and so mimic planet signals in the spatial domain, and correlations in the time domain cause them...

  • Thursday, October 28, 2021 - 3:45pm - 5:00pm
    Title: Current and Future NASA Space Telescopes Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Astronomy is arguably in a golden age, where current and future NASA space telescopes are expected to contribute to this rapid growth in understanding of our universe.   A summary of our current space assets will be given, as well as an update on the status of the James Webb Space...

  • Thursday, October 21, 2021 - 3:45pm - 5:00pm

    In recent years, acoustic phonons have emerged as a powerful resource for signal processing, precision metrology, and quantum information processing. In this talk, we explore methods for controlling and shaping the interactions between photons and acoustic phonons as the basis for both classical...

  • Thursday, October 14, 2021 - 3:45pm - 5:00pm
    Title: Identifying the Spectral Fingerprint of Disease: Using Optical Imaging to Shed Light on Cancer

    Epithelial cancers are among the most dangerous forms of cancer, often with five-year survival rates as low as 20%. Early detection can significantly improve prognosis, but very few reliable early detection techniques exist for these cancers. Optical imaging is immensely promising for early...

  • Monday, October 4, 2021 - 3:30pm
    Speaker:  Dr. Shambhu Ghimire Topic:  High-harmonic Spectroscopy of Quantum Materials Host:  Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    High-harmonic spectroscopy is a novel spectroscopic approach based on the microscopic mechanism for high-order harmonic generation (HHG). In the gas phase, it has been shown successfully that this approach can probe the structure and dynamics of atoms and small molecules. The understanding of...

  • Thursday, September 30, 2021 - 3:30pm - 5:00pm
    Speaker:  Dr. Douglas Shepher Topic:  Scalable, high-speed, 3D imaging of molecular biology in action Host:  Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive  

    Continued advancements in biomedical optical microscopy and fluorescent labeling techniques have enabled multi-dimensional visualization of biology in action at the single-molecule level. For example, multiple large-scale efforts are currently underway to create nanoscale spatial maps of...

  • Thursday, September 23, 2021 - 3:30pm
    Speaker:  Dr. Matthieu Bloch Topic:  Towards Covert and Secret Quantum Networks Host:  Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Despite steady progress in “post-quantum” cryptography, quantum-secured communication, especially in the form of Quantum Key Distribution (QKD), remains to date  the only unconditionally secure technology to distribute secret keys. Quantum communication has effectively “...

  • Thursday, September 16, 2021 - 3:30pm - 5:00pm
    Speaker:  Dr. Ron Driggers Topic:  Advanced Infrared Systems Host:  Dr. Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Dr. Driggers will present several topics related to advanced infrared imaging systems.  He will start with a general discussion about dual band infrared systems (third generation FLIR).  Also included are small pitch, high density focal plane systems that eliminate the need for...

  • Thursday, September 9, 2021 - 3:30pm
    Description:  Speaker:  Dr. David Brady Topic:  Neural Processing and Snapshot Compressive Imaging Host:  Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Most imaging systems capture measurements distributed over two dimensional sensor planes. Most objects of interest are 3, 4 or 5 dimensional. (Hyperspectral images, video and volume stills are 3D, adding time, space and frequency together yields 4D or 5D data cubes). Over the past decade,...

  • Thursday, September 2, 2021 - 3:30pm
    Speaker:  Dr. Brandon Chalifoux Topic:  Fabrication, Alignment and Testing of Ultralight Mirrors for Future X-ray Telescopes Host:  Dalziel Wilson Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    Space telescopes may one day perform astronomical imaging with micro-arcsecond angular resolution in optical or even X-ray wave bands, if ultralight mirrors and structures can be fabricated and aligned with sufficient accuracy. My group’s research aims to fabricate, align, and test thin...

  • Thursday, August 26, 2021 - 3:30pm
      Speakers: Richard N. Youngworth and Dave Aikens Topic: What All Optical Scientists Should Know about (Optics) Standards Host: Dalziel Wilson Co-Host: Jose Sasian Visit our website for future lecture dates and speaker information: http://www.optics.arizona.edu/news-events/events/colloquium For a list of our archived lectures: http://www.optics.arizona.edu/news-events/events/colloquium/archive

    In this presentation we give a “crash course” into what everyone should know about how standards affect optical sciences and industry. Standards have a long rich history of successful application, including setting scientific norms like weights and measures, units, safety, providing...