R.M. Macfarlane, H. Rosen, et al.
Physical Review B
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. Macfarlane, H. Rosen, et al.
Physical Review B
G.W. Burr, H. Coufal, et al.
SPIE Optical Science and Technology 2000
Paul M. Lundquist, C. Poga, et al.
Optics Letters
R.M. Shelby, J. Hoffnagle, et al.
Optics Letters