The absorption, emission and excitation optical spectra of F2+ and F3+ color centers generated in LiF through low energy (30 keV) electron beam irradiation were measured at room temperature by pumping with an Ar+ laser the resulting thin colored layer. A quenching of the emission intensity of the F3+ centers versus the pump power was observed, with characteristics similar to bulk colored crystals. The analysis of the photoemission spectra showed a new band, which has been discovered previously also in bulk crystals colored and treated in different ways. The possibility of applications of the colored ribbon for miniaturized laser devices is commented.
Baldacchini, G., Cremona, M., Montereali, R.m., Docarmo, L., Nunes, R.a., Paciornik, S., et al. (1992). PHOTOLUMINESCENCE OF LIF CRYSTAL COLORED BY A FOCUSED ELECTRON-BEAM. OPTICS COMMUNICATIONS, 94(1-3), 139-142 [10.1016/0030-4018(92)90422-N].
PHOTOLUMINESCENCE OF LIF CRYSTAL COLORED BY A FOCUSED ELECTRON-BEAM
SOMMA, Fabrizia;
1992-01-01
Abstract
The absorption, emission and excitation optical spectra of F2+ and F3+ color centers generated in LiF through low energy (30 keV) electron beam irradiation were measured at room temperature by pumping with an Ar+ laser the resulting thin colored layer. A quenching of the emission intensity of the F3+ centers versus the pump power was observed, with characteristics similar to bulk colored crystals. The analysis of the photoemission spectra showed a new band, which has been discovered previously also in bulk crystals colored and treated in different ways. The possibility of applications of the colored ribbon for miniaturized laser devices is commented.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
