Since the advent of atom laser-cooling, trapping or cooling natural molecules
has been a long standing and challenging goal. Here, we demonstrate a method
for laser-trapping molecules that is radically novel in its configuration, in
its underlined physical dynamics and in its outcomes. It is based on
self-optically spatially-nanostructured high pressure molecular hydrogen
confined in hollow-core photonic-crystal-fibre. An accelerating
molecular-lattice is formed by a periodic potential associated with Raman
saturation except for a 1-dimentional array of nanometer wide and
strongly-localizing sections. In these sections, molecules with a speed of as
large as 1800 m/s are trapped, and stimulated Raman scattering in the
Lamb-Dicke regime occurs to generate high power forward and backward-Stokes
continuous-wave laser with sideband-resolved sub-Doppler emission spectrum. The
spectrum exhibits a central line with a sub-recoil linewidth of as low as 14
kHz, more than 5 orders-of-magnitude narrower than in conventional Raman
scattering, and sidebands comprising Mollow triplet, molecular
motional-sidebands and four-wave-mixing.Comment: 28 pages 1-12 for main manuscript 13-28 for Methodes and appendices 4
figures for Main manuscript 12 figures for the Methods par