OSC Colloquium: Andrew Metcalf

    Thursday, April 28, 2022 - 3:30pm - 5:00pm
    Meinel 307

    Title: A Coherent Connection: Optical Frequency Combs


    Optical frequency combs based on mode-locked lasers have become well known thanks to their revolutionary impact on the fields of spectroscopy and metrology. More recently, less traditional comb generation techniques, including nano-photonic and electro-optic methods, have been leveraged to tackle a more diverse set of applications. Here I will discuss various flavors of optical frequency comb generation and their targeted use for applications including RF-photonics, astronomical spectrograph calibration, and the development of the next generation of space-based clocks.

    Speaker Bio(s): 

    Dr. Andrew ‘AJ’ Metcalf is the Space Mission Area Lead, Air Force Research Laboratory. He coordinates AFRL’s space science and technology investment strategy, ensuring synchronization with the tech needs for USSF, Space Operations Command, and Space Systems Command. He leads engagements with partners throughout the Department of Defense, the Intelligence Community, industry, and academia

    Dr. Metcalf began his career at Harley-Davidson’s Product Development Center designing and testing motorcycle communication systems. He then joined Purdue University’s Ultrafast Optics and Optical Fiber Communications Laboratory where he advanced electro-optic and photonic technology for broadband communication and sensing applications. After completing his doctorate, he joined the National Institute of Standards and Technology (NIST) in Boulder CO, where he developed and successfully deployed a photonic system to calibrate astronomical spectrographs with sufficient precision to detect Earth-like planets

    In 2018 he joined AFRL’s Strategic Atomic Navigation Devices Systems (SANDS) program at Kirtland AFB, where he stood up a new photonics laboratory and expanded the programs research portfolio to pursue new applications in precision timing. In 2019 he assumed programmatic control of the Quantum Sensing Timing (QST) program, a 34-member team developing advanced PNT technology. From 2020 through 2021 Dr. Metcalf served as the Mission Lead for the Directorates Space Communication and PNT portfolio

    Dr. Metcalf has published over 70 papers in national and international journals or conferences. He is an active journal referee and serves as a subject matter expert to other DoD agencies and organizations regarding photonic technologies.


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