title: Optical Raman heterodyne detection of (27)Al superhyperfine spectra in ruby.
abstract: We report extension of the Raman heterodyne technique for detection of nuclear magnetic resonance (NMR) to superhyperfine spectra. NMR of the four nearest neighbor sets of (27)A1 (I = 5/2) surrounding Cr(3+) in ruby has been observed with high sensitivity using optical excitation of the R(1) line at 693.4 nm. Either excited-state or groundstate resonances could be selectively displayed by setting the sample temperature to 2 or 7.5 K, respectively. All 40 expected NMR resonances were observed, with good agreement obtained between calculated and experimental values.
authors.forename: A
authors.initials: A
authors.lastname: Szabo
authors.forename: T
authors.initials: T
authors.lastname: Muramoto
authors.forename: R
authors.initials: R
authors.lastname: Kaarli