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Updated: Jun 20, 2026

Ultrafast Time-resolved Near-IR Stimulated Raman Measurements of Functional π-conjugate Systems
Published on: February 10, 2020
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.
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