Presentations

    Femtosecond surface photochemistry: what is the role of the substraste electrons?, at Femtochemistry: The Lausanne Conference (Lausanne, Switzerland), Thursday, September 7, 1995
    We studied the femtosecond laser-induced desorption of O2 and production of CO2 from a CO/O2/Pt(111) surface at 90K. The reaction pathway with 0.3-ps laser pulses is very different from that with nanosecond or continuous wave irradiation.[1,2] Our experiments address both the excitation excitation mechanism and the chemical pathway leading to O2 desorption and CO2 production using femtosecond laser pulses. When the fluence is below 10 µJ/mm2 the yields of O2 and CO2 vary linearly with laser fluence. Above 10 µJ/mm2 the yield is highly nonlinear in the fluence. The transition indicates a... Read more about Femtosecond surface photochemistry: what is the role of the substraste electrons?
    Femtosecond surface photochemistry: what is the role of the substraste electrons?, at Femtochemistry: The Lausanne Conference (Lausanne, Switzerland), Thursday, September 7, 1995
    We studied the femtosecond laser-induced desorption of O2 and production of CO2 from a CO/O2/Pt(111) surface at 90K. The reaction pathway with 0.3-ps laser pulses is very different from that with nanosecond or continuous wave irradiation.[1,2] Our experiments address both the excitation excitation mechanism and the chemical pathway leading to O2 desorption and CO2 production using femtosecond laser pulses. When the fluence is below 10 µJ/mm2 the yields of O2 and CO2 vary linearly with laser fluence. Above 10 µJ/mm2 the yield is highly nonlinear in the fluence. The transition indicates a... Read more about Femtosecond surface photochemistry: what is the role of the substraste electrons?
    Surface femtochemistry: Elucidating reaction pathways, at Ultrafast Surface Dynamics Workshop (Ascona, Switzerland), Wednesday, March 5, 1997:

    We studied the desorption of O2 and production of CO2 induced by intense femtosecond laser pulses incident on a Pt(111) surface prepared with coadsorbed CO and O2 at 90 K. The reaction pathway with femtosecond laser pulses is very different from that with nanosecond or contineous wave irradiation [1,2]. Our experiments address both the excitation mechanism as well as the chemical pathway leading to O2 desorption and CO2...

    Read more about Surface femtochemistry: Elucidating reaction pathways