Pr. Hemmer et al., OPTICAL SPECTRAL HOLEBURNING WITH RAMAN COHERENT POPULATION TRAPPING, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 291, 1996, pp. 287-294
Optical spectral holeburning is examined for the case when two-frequen
cy Raman resonant laser excitation is used in place of conventional si
ngle frequency excitation. It is found that Raman coherent population
trapping can be used to increase storage capacity beyond the limit giv
en by the ratio of optical inhomogeneous to homogeneous Linewidths. Th
is is possible because Raman population trapping provides an additiona
l storage dimension. Theoretical analysis and practical issues are pre
sented.