R.M. Shelby, M. Levenson, et al.
Physical Review Letters
Homogeneous optical linewidths as small as 760 Hz (fwhm) have been observed in Y2O3+ using delayed heterodyne photon echoes. Hyperfine and lifetime contributions to dephasing are estimated to contribute {slanted equal to or less-than} 300 Hz to this width, and the remainder is attributed to quasi-resonant energy transfer. © 1981.
R.M. Shelby, M. Levenson, et al.
Physical Review Letters
X. Jiang, R. Wang, et al.
Physical Review Letters
R.M. Macfarlane, A.J. Meixner
Optics Letters
R.M. Macfarlane, W. Lenth
ASSL 1986