Десорбция физически адсорбированных молекул с поверхности сапфира излучением второй гармоники лазера на алюмо-иттриевом гранатестатья
Статья опубликована в журнале из списка RSCI Web of Science
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Статья опубликована в журнале из перечня ВАК
Дата последнего поиска статьи во внешних источниках: 19 сентября 2015 г.
Аннотация:Energy fluence dependences for the laser-enhanced desorption of physisorbed NO, SO2, CO2, NH3, and C6H6molecules from the sapphire surface by second-harmonic radiation of a pulse neodymium-doped yttrium–aluminum garnet (YAG) laser were experimentally studied. It was shown that the one-photon absorption of radiation at the second-harmonic wavelength (λ = 532 nm) by adsorbed NO molecules was so low that their desorption was accomplished via two-photon absorption. Nonlinear energy fluence dependence with a nonlinearity index of greater than 4 was observed for polyatomic molecules. The desorption of these molecules did not occur at the YAG laser emission wavelength (λ =1064 nm), thus suggesting that the long-wavelength edge of their one-photon absorption lies within the range 1064–532 nm.