Published in
American Physical Society, Physical Review A, 3(54), p. R1777-R1780
DOI: 10.1103/physreva.54.r1777
Links
Tools
Very low threshold whispering-gallery-mode microsphere laser
Journal article published in 1996 by
V. Sandoghdar,
F. Treussart 
,
J. Hare,
V. Lefèvre-Seguin,
J.-M. Raimond,
S. Haroche
,
J. Hare,
V. Lefèvre-Seguin,
J.-M. Raimond,
S. Haroche
This paper is available in a repository.
Full text: Download
Data provided by 
Abstract
We report on the realization of a whispering-gallery-mode laser based on neodymium-doped silica microspheres. Absorbed pump powers at threshold are as low as 200 nW. The linear variation of the threshold with the loss factor of the cavity mode has also been observed. We discuss the potential of this system as a permanent microlaser operating with a few active ions at liquid-helium temperature.