Resonant-optical detection of nuclear magnetization in the Si/CaF 2 nanostructure

We have considered theoretically the characteristic features of optical detection of nuclear magnetization in the Si/CaF2 structure under the conditions of EPR and NMR by measuring luminescence polarization. We show that application of EPR makes it possible to detect weak nuclear fields, but the time of spin relaxation of electrons imposes its constraint. The application of NMR is limited by nuclear fields of no less than 15-20 Gs. The possibility of using optical NMR for direct measurement of the nuclear field from changes in the luminescence polarization spectrum is shown. ©2005 Springer Science+Business Media, Inc.