Desorption of physisorbed molecules electronically excited by radiation of excimer lasers

Vladimir N. Varakin; S. P. Kabanov; Alexander P. Simonov

doi:10.1117/12.340024

5 February 1999 Desorption of physisorbed molecules electronically excited by radiation of excimer lasers

Vladimir N. Varakin, S. P. Kabanov, Alexander P. Simonov

Proceedings Volume 3732, ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine; (1999) https://doi.org/10.1117/12.340024
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

Laser desorption of adsorbed NO, CO₂, SO₂ NH₃ and C₆H₆ molecules from a fused quartz substrate have been studied using mass spectrometry. The desorption was induced either by adsorbate absorption of UV excimer laser radiation or by substrate heating due to TEA CO₂ laser irradiation. The UV resonant desorption was found to be characterized by various laser fluence dependences ranging from linear to highly nonlinear (threshold) one. A powerful KrF laser irradiation of quartz substrate caused changes in the UV desorption processes. An influence of SO₂ surface chemistry on its UV laser desorption was also observed.

Citation Download Citation

Vladimir N. Varakin, S. P. Kabanov, and Alexander P. Simonov "Desorption of physisorbed molecules electronically excited by radiation of excimer lasers", Proc. SPIE 3732, ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, (5 February 1999); https://doi.org/10.1117/12.340024

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