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Controlling Isomer Population Using a Dual-Oscillator Infrared Free-Electron Laser
América Y Torres-Boy1, Anoushka Ghosh1, Myles B T Osenton1
1Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195 Berlin, Germany.
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We report on the control and characterization of the isomer population of ions inside superfluid helium nanodroplets, using two-color operation of a dual-oscillator infrared free-electron laser. The timing of both lasers is highly synchronized and their frequencies (or "colors") can be tuned independently over a wide range. Interaction of the singly deuterated proton-bound dimer of dihydrogen phosphate and formate inside helium nanodroplets with both colors enables the control over its isomer population and the recording of-one-color hidden-infrared spectra of individual isomers.
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