Plans for the 2020 International Day of Light were in full swing when the pandemic put the world on pause—but the celebration of light science continued, thanks to some creative online outreach.
Shang-Hua Yang and Mona Jarrahi
Photomixers, including recent designs based on plasmonics, can combine tunability, power and room-temperature operation in both THz transmitters and receivers, for applications in 5G communications, astronomy and more.
Diode laser technology has opened doors for new approaches to illumination—both directional and general—that could challenge LEDs.
Patricia Daukantas, Edwin Cartlidge, Meeri Kim, Alessia Kirkland, Molly Moser, William Schulz and Stewart Wills
Goran Z. Mashanovich, Milos Nedeljkovic, Callum G. Littlejohns and Milan M. Milosevic
Alessia Kirkland and Molly Moser
Crystals May Be Key to a Practical Yellow Laser
Progress in Optics: A Tribute to Emil Wolf
A Miniaturized Ultrasound Detector