Photonics Media will host its second annual Photonics Spectra Conference Jan. 10-13. The virtual event will comprise four technology tracks — Lasers, Optics, Sensors and Detectors, and Imaging — each assigned to its own day. From left, Manijeh Razeghi, Federico Capasso, Alexis Méndez, Eric R. Fossum As of press time, the program features 30 industry-leading speakers who will present on a wide range of topics, including the latest advancements in photonic components and systems technology, as well as trending applications spanning laser materials processing, fiber optic sensors, detector components for lidar, scientific imaging, and the design, fabrication, and metrology of optical systems. Keynote Speakers Manijeh Razeghi is recognized as a pioneer in the optoelectronic devices at the heart of the information age and, more recently, as an authority in the development of quantum devices operating in the deep ultraviolet spectral band. Her keynote brings listeners up to speed on the mechanics underlying quantum technology, surveys the state of the art for quantum applications, and explores where the technology is headed next. Federico Capasso, who helped pioneer the quantum cascade laser, discusses trends and technologies emerging from his more recent work in optical metasurfaces. The metalens technology exploits the interactions between photons and matter at the nanometer scale to achieve unprecedented control of light as it passes through the bulk of the material. The resulting technology has commercial applications in digital imaging, augmented reality, and 3D sensing. Alexis Méndez heads a consulting firm that specializes in optical fiber sening technology and its application. He explores the market drivers spurring new growth and opportunities for the sensors in biomedical, industrial, aerospace, and environmental monitoring applications. Eric R. Fossum is inventor of the now-ubiquitous CMOS active pixel image sensor. He shares a brief primer comparing single-photon avalanche diodes with CMOS quanta image sensors, followed by a survey of their comparative merits, their representative photon counting applications, and their collective future as the two technologies show signs of converging. A preview of the 2022 program assembled thus far follows. New presenters continue to sign on, so check back often at www.photonics.com/PSC2022, where you can register to attend the event for free. As with the 2021 edition of the conference, the 2022 event will feature an all-star lineup of keynote speakers.