jz302103u_si_001.pdf (565.71 kB)
Highly Efficient Pumping of Vibrationally Excited HD Molecules via Stark-Induced Adiabatic Raman Passage
journal contribution
posted on 2015-12-16, 22:24 authored by Tao Wang, Tiangang Yang, Chunlei Xiao, Dongxu Dai, Xueming YangA primary prerequisite to study reactivity of vibrationally
excited
species is to efficiently prepare reacting species in a well-defined
vibrational level. Efficient pumping of IR active vibrational modes
in a molecule can be achieved by direct IR absorption. For vibrational
modes that are only Raman active, however, efficient preparation of
vibrationally excited states in those modes is not easily attainable.
In this work, we have shown that highly efficient preparation of the
HD(v = 1) state using the Stark-induced adiabatic
Raman passage (SARP) scheme is feasible. As high as 91% population
transfer from v = 0 to 1 of HD has been demonstrated
in our experiment. This method provides new opportunities for future
experimental studies on the dynamics of vibrational state molecules,
especially H2, in both gas-phase and beam-surface reactions.