Sonoluminescence and quantum optical heating

Details Sonoluminescence and quantum optical heating Sonoluminescence and quantum optical heating

2009-04-06

arxiv.org/abs/0904.0885v1

New J.Phys.11:053001,2009

Physics

Condensed Matter

Other Condensed Matter

23 pages, 7 figures, New J. Phys. (in press)

Scientific paper

10.1088/1=

Sonoluminescence is the intriguing phenomenon of strong light flashes from tiny bubbles in a liquid. The bubbles are driven by an ultrasonic wave and need to be filled with noble gas atoms. Approximating the emitted light by blackbody radiation indicates very high temperatures. Although sonoluminescence has been studied extensively, the origin of the sudden energy concentration within the bubble collapse phase is still controversial. It is hence difficult to further increase the temperature inside the bubble for applications like sonochemistry and table top fusion. Here we show that the strongly confined nobel gas atoms inside the bubble can be heated very rapidly by a weak but highly inhomogeneous electric field as it might occur naturally during rapid bubble deformations. An indirect proof of the proposed quantum optical heating mechanism would be the detection of the non-thermal emission of photons in the optical regime prior to the light flash. Our model implies that it is possible to increase the temperature inside the bubble with the help of appropriately detuned laser fields.

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