Category Archives: Optics

Null-field radiationless sources: even more invisible than invisible?

I spend a lot of time talking about invisibility on this blog, as it is a subject near and dear to me: I did my PhD work, completed in 2001, on early historical forms of invisibility.  I like to tell … Continue reading

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Nobel Prize roundup: It’s all about the optics!

This week, the Nobel Prizes for Physics and Chemistry were announced, and it was a photonics two-fer!  The physics prize went to Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura “for the invention of efficient blue light-emitting diodes which has enabled bright and energy-saving white … Continue reading

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Physics demonstrations: The Phantom Lightbulb

Some of the most spectacular physics demonstrations rely on surprisingly simple science.  Throughout history, for instance, very simple optics has been used to great effect to terrify and amaze audiences (see, for instance, Robertson’s Phantasmagoria).  I recently came across such … Continue reading

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“How the Ray Gun Got Its Zap,” by Stephen Wilk (Updated)

There are a lots of popular science books out there, but a relatively small fraction of those books are related to physics.  And of those popsci books related to physics, there are only a small fraction that discuss optics.*  And … Continue reading

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Communication via vortices?

This is the second in a series of posts about the upcoming OSA Frontiers in Optics meeting in Orlando.  This post covers research related to the presentation FM3F.1: Alan E. Willner, Multiplexing Information-Carrying Orthogonal Beams using Orbital Angular Momentum States.  To be (hopefully) cross-posted … Continue reading

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1842: Jean-Daniel Colladon guides light with water

Big technological advances often start with very humble beginnings.  If you’re reading this post on the internet right now, it is almost certain that the information has come to you at some point in the journey in the form of … Continue reading

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Supersymmetry in optics?

This is the first in a series of posts about the upcoming OSA Frontiers in Optics meeting in Orlando.  This post covers research related to the presentation FM4C.5: Mohammad-Ali Miri; Matthias Heinrich; Demetrios N. Christodoulides, SUSY-generated complex optical potentials with real-valued spectra. … Continue reading

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