After Images | Optics & Photonics News

Ink Droplet

An ink droplet in water creates a beautiful blue gradient.

—Souvik Ghosh, City University of London, U.K.

01 Jul 2019

Multi-color laser

The output of a multi-color laser is diffracted from the tip of an optical fiber.

—Abdullah Rahnama, Gligor Djogo and Peter R. Herman, University of Toronto, Canada

01 Jun 2019

A black hole at the center of galaxy

An image of the black hole at the center of galaxy M87, obtained by the Event Horizon Telescope—a very-long-baseline interferometry (VLBI) array of eight high-altitude millimeter-wave astronomy facilities distributed across Earth’s surface.

—Event Horizon Telescope Collaboration et al.

01 May 2019

Fern sorus:

Structures producing and containing spores. [2nd Place 2018 Nikon Small World Photomicrography Competition]

—Rogelio Moreno Gill, Panama, Panama

01 Apr 2019

Those Who Affected Me

Those Who Affected Me, a textile by Swedish designer Malin Bobec, lights up with optical fibers connected to 500 programmable LEDs. [Gothenburg Museum of Art, Sweden, Dec. 2015 to Feb. 2016]

—Swedish designer Malin Bobec / Photo by Yann Houlberg Andersen

01 Mar 2019

Curling snow drifts

Curling snow drifts are magnified by the terrain around the 2200-km Dnieper River, which flows from Russia to the Black Sea, in this image from the International Space Station on 9 February 2017.

—NASA/ESA/Thomas Pesquet

01 Feb 2019

Blue Laser Light

Welding with 500 W of blue laser light. [OPN 2018 After Image Photo Contest entry.]

—James P. Tucker Nuburu Inc., Colo., USA

01 Jan 2019

Afterglow

This composite image—stitched together from pictures taken from a drone—shows the atmospheric scattering effect called afterglow. It was taken on a cold evening in Oulu, Finland, just after sunset, at a temperature of around -10 °C. [OPN 2018 Photo Contest Editors’ Choice]

—Prateek Singh, University of Oulu, Finland

01 Dec 2018

Alien life?

Nighttime view over Badwater, Death Valley, Calif., USA, the lowest point (-282 feet below sea level) in the United States. The “aliens” are actually made from combined exposures of LED lights waved in a more-or-less vertical direction. The base picture is a 15-second exposure with the core of the Milky Way galaxy in view.

—Michael Duncan, OSA Senior Science Advisor

01 Nov 2018

In Rainbows

A circular rainbow produced in the lab of Federico Capasso at Harvard University by collecting scattered light of an array of TiO2 nanostructures using a microscope objective. The nanostructure array disperses light in a similar way to water droplets, producing blue color in the inner ring and reddish color toward the edge of the rainbow.

—Wei Ting Chen, Harvard University, USA

20 Sep 2018

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