Radiation pressure force from optical cycling on a polyatomic molecule
نویسندگان
چکیده
We demonstrate multiple photon cycling and radiative force deflection on the triatomic free radical strontium monohydroxide (SrOH). Optical cycling is achieved on SrOH in a cryogenic buffer-gas beam by employing the rotationally closed ( ) = P N 1 branch of the vibronic transition ̃ ( ) ̃ ( ) S « P + X A 000 000 2 2 1 2 . A single repumping laser excites the Sr–O stretching vibrational mode, and photon cycling of the molecule deflects the SrOH beam by an angle of 0.2 via scattering of ∼100 photons per molecule. This approach can be used for direct laser cooling of SrOH and more complex, isoelectronic species.
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