Physicists Make a Mobius Strip From Beams of Light

rossgneumann writes: A group of physicists has successfully manipulated beams of laser light into an optical mobius strip (abstract). The shape, a classic mindbender all but nonexistent in nature, has never before been seen in such an immaterial form.

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Re:Stupid question from an ignoramus

[ihtoit]

you use a laser and a crystal with a polar void along the wave axis. Such setups have been in use since the 1970s in things like micromanipulators, planet detectors (yes, planet detectors), and most recently quantum bits.