Conic Emission
Typical cone-shaped light emission taken when a piece of white paper is used to intercept sideways the transmitting light of the femtosecond laser that propagates from the right to the left and produces a micro air plasma ball (also shown on the right) in air. Olympus C5050Z. [Winner 2013 After Image photo contest.] —Zhijun Xu, Nankai University
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31 Oct 2013
Photoelasticity of Tape
Photoelasticity of tape. [Second place 2013 After Image photo contest.] —Katy Wood, Maryland Institute College of Art
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31 Oct 2013
Hexagonal Arrangement
A hexagonal arrangement of seven ball lenses, each forming an image of the triangular pattern behind them. [Third place 2013 After Image photo contest.] —William P. Risk, IBM
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31 Oct 2013
Night-shining clouds
Night-shining "noctilucent" clouds shine with light made blue by ozone absorption in the uppermost atmosphere, while the lower atmosphere glows red in deep twilight. Photographed from an airplane at 11.8 km over western Canada. [Honorable mention 2013 After Image photo contest.] —Joseph A. Shaw, Montana State University
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31 Oct 2013
Jet Beam
Single jet beam ejected from the femtosecond laser induced micro air plasma with the focal lens inside the lens tube on the right properly offset. Olympus C5050Z. [Honorable mention 2013 After Image photo contest.] —Zhijun Xu, Nankai University
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31 Oct 2013
Photoelasticity of Cups
Photoelasticity of cups. [Honorable mention 2013 After Image photo contest.] —Katy Wood, Maryland Institute College of Art
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31 Oct 2013
Amorphous Silicon Film
Optical microscope image of cracked high stress amorphous silicon film, showing the random structure of the material. —Ke-Yao Wang, Johns Hopkins University
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31 Oct 2013
Colorful Fringe
When the collimating lens in inserted backwards (plano-surface of lens is facing the source) in the interferometer equally spaced straight line fringes are not seen and we get semi-circular fringes instead. —Danielle C. Doughty, University of Arizona, College of Optical Sciences
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31 Oct 2013
Chabot Observatory
Chabot Observatory in Oakland, Calif. Fall sunset 2012, with the first quarter moon. The telescope domes for "Leah" and "Rachel" are in the foreground. —Robert E. Schalck, Senior OSA Member
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31 Oct 2013
Holiday Lights
Display of holiday lights at Shore Ares State Park, Ore. The park has over 200,000 LEDS on display, both above ground and under water. —Robert E. Schalck, Senior OSA Member
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31 Oct 2013
