Wednesday, September 26, 2012

How To Build A Black Hole Laser - Technology Review

How To Build A Black Hole Laser - Technology Review: Their idea is to create a black hole next to a white hole so that their event horizons are separated by just a few hundred micrometres and create a small cavity. Then they show that when light is fired into this cavity, it is reflected off the white hole horizon onto the black hole horizon, back to the white again and so on...
Their real triumph, however, is in showing how such a device could be made in the lab...
...a very intense beam can create a huge gradient in the refractive index. This gradient can be so steep that it behaves like an event horizon. In fact, a single pulse can create black hole horizon at its leading edge and a white hole horizon at its trailing edge.

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