Optical features of a LiF crystal soft X-ray imaging detector irradiated by free electron laser pulses
Optical features of point defects photoluminescence in LiF crystals, irradiated by soft X-ray pulses of the Free Electron Laser with wavelengths of 17.2 - 61.5 nm, were measured. We found that peak of photoluminescence spectra lies near of 530 nm and are associated with emission of F3+ centers. Our...
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| Veröffentlicht in: | Optics express 2012-02, Vol.20 (4), p.3424-3433 |
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| container_title | Optics express |
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| creator | Pikuz, Tatiana Faenov, Anatoly Fukuda, Yuji Kando, Masaki Bolton, Paul Mitrofanov, Alexander Vinogradov, Alexander Nagasono, Mitsuru Ohashi, Haruhiko Yabashi, Makina Tono, Kensuke Senba, Yashinori Togashi, Tadashi Ishikawa, Tetsuya |
| description | Optical features of point defects photoluminescence in LiF crystals, irradiated by soft X-ray pulses of the Free Electron Laser with wavelengths of 17.2 - 61.5 nm, were measured. We found that peak of photoluminescence spectra lies near of 530 nm and are associated with emission of F3+ centers. Our results suggest that redistribution of photoluminescence peak intensity from the red to the green part of the spectra is associated with a shortening of the applied laser pulses down to pico - or femtosecond durations. Dependence of peak intensity of photoluminescence spectra from the soft X-ray irradiation fluence was measured and the absence of quenching phenomena, even at relatively high fluencies was found, which is very important for wide applications of LiF crystal X-ray imaging detectors. |
| doi_str_mv | 10.1364/OE.20.003424 |
| format | Article |
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We found that peak of photoluminescence spectra lies near of 530 nm and are associated with emission of F3+ centers. Our results suggest that redistribution of photoluminescence peak intensity from the red to the green part of the spectra is associated with a shortening of the applied laser pulses down to pico - or femtosecond durations. 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| title | Optical features of a LiF crystal soft X-ray imaging detector irradiated by free electron laser pulses |
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