A conceptual design of the set-up for solid state spectroscopy with free electron laser and insertion device radiation

The set-up for complex solid state spectroscopy with the use of enhanced pr operties of radiation from insertion devices and free electron lasers is pr oposed. Very high flux and pulsed properties of radiation from insertion de vices and free electron lasers offer the possibility for the use of such po werful techniques as electron paramagnetic resonance (EPR) and optically de tected magnetic resonance (ODMR) for the studies of excited states of elect ronic excitations or defects in solids. The power density of radiation can become high enough for one more method of exited-state spectroscopy: transi ent optical absorption spectroscopy. The set-up is supposed to combine the EPR/ODMR spectrometer, i.e. cryostat supplied with superconducting magnet a nd microwave system, and the optical channels for excitation (by radiation from insertion devices or free electron laser) and detection of luminescenc e (i.e. primary and secondary monochromators). The set-up can be used both for "conventional" spectroscopy of solids (reflection and absorption spectr oscopy, time-resolved luminescence spectroscopy, photon stimulated desorpti on) and as EPR/ODMR spectrometer. (C) 2001 Elsevier Science B.V. All rights reserved.