05 June 1998
Vol 280, Issue 5369

About The Cover

A cylindrical semiconductor microlaser has been deformed from circular symmetry. The deformation in general leads to a chaotic behavior of the light rays in the resonator. For the laser shown the deformation results in a "bow-tie"--shaped intensity pattern inside the microresonator, strongly directional light emission (yellow-green "beams"), and 1000 times the light output that would be achieved from the corresponding undeformed laser. See p. 1556 and the Commentary on p. 1544. [Illustration: K. D. Drake, Bell Labs, Lucent Technologies]