Optically detected nuclear resonance of excited and ground states of YPO4:Pr3+ (original) (raw)

The hyperfine structure and nuclear magnetic moments of Pr 3+ : YPO4 in the ground state and lowest component of the 1 D¢2 excited state have been measured using laser holeburning and optically detected nuclear resonance. For the ground state, the quadrupole coupling constants are D g = 3.079 MHz, r~ < 0.01 and the magnetic splitting factors "r~!2~r = 2.308 kHz/G, 3,g[2~r = 5.41 kHz/G. The corresponding excited state values are D e = 2.272 MHz, n < 0.002 and ~/~ ~2~r = 1.42 kHz /G,-r~./2~r = 1.72 kHz/G. Model calculations of the splitting factors assuming pure 4f 2 electron states agree well with the ground state values but rather poorly with those in the excited state.