June 2017

A subset of Laguerre-Gauss spatial light modes, with orbital angular momentum (OAM) modes in the top row. [Image: Sonja Franke-Arnold]

Light Served with a Twist

Sonja Franke-Arnold and Neal Radwell

The insight of a classic study on optical orbital angular momentum, published a quarter-century ago, continues to resonate in new approaches to structuring, controlling and leveraging light beams.


Infrared Yellowstone

Eruptions of boiling geysers; silent, bubbling hot springs; turbulent, hot outflows mixing into cold rivers—the breathtaking thermal features of Yellowstone National Park become both art and science when observed with close-up infrared thermal imaging.

2017 OSA Awards and Medals

Congratulations to the recipients of OSA’s prestigious awards and medals. These distinguished individuals are here recognized for outstanding service, education, research, technical, business and leadership accomplishments.


Behind the Scenes with John Schwartzman

Bringing AR to the Masses

Lidar: Uncovering Lost Cities

Research and Industry News

Honing in on Hyperspectral Imaging

Difficult Times for Turkish Science


Recent Issues

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