PHYSICAL REVIEW FOCUS 27 January 2006 http://focus.aps.org/
David Ehrenstein, American Physical Society
Introductions to the Focus stories of the past week;
Visit http://focus.aps.org for the complete stories.
A 75-KILOMETER-LONG LASER
Researchers have demonstrated the longest laser ever built, using
an optical fiber that could stretch from Washington, DC, to
Baltimore. In the 20 January PRL, a team shows that their
75-kilometer laser can transmit light signals with hardly any
loss of power over that distance. The laser light provides a
uniform source of energy throughout the fiber that prevents the
signal from deteriorating. The technique could offer a huge
improvement for voice and data transmissions over long distances.
(Juan Diego Ania-Castanon et al., Phys. Rev. Lett. 96, 023902)
Link to the paper: http://link.aps.org/abstract/PRL/v96/e023902
COMPLETE Focus story at http://focus.aps.org/story/v17/st3
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Copyright 2006, The American Physical Society.
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