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Title: Quantum Dot Lasers: One Dot Makes All the Difference
Description: Microdisk lasers used in experiments by NIST, Stanford University and Northwestern University are made by layering indium arsenide on top of gallium arsenide and etching out disks about 1.8 micrometers across on pillars of gallium arsenide. Scanning tunneling microscope image (inset) shows some of the approximately 130 "quantum dot" islands of indium arsenide in each disk.

*PHY

See also http://www.nist.gov/public_affairs/techbeat/tb2007_0412.htm#lasers.
Subjects (names):
Topics/Categories:
Type: Photo/B&W
Source: National Institute of Standards and Technology
Credit Line as it should
appear in print:
Credit: NIST
AV Number: 07PHY013
Date Created: April 12, 2007
Date Entered: 4/12/2007

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