  We describe methods for the production of spin-polarized H and D atoms from
the IR-excitation and photodissociation of molecular beams of HBr, HI, and
${\rm NH_{3}}$ isotopes, including optical excitation schemes with partial
hyperfine resolution. We discuss the extent to which the production rates may
approach the IR-laser production rates of ${\rm 10^{21}\, photons\, s^{-1}}$,
and how the production rates of conventional methods of ${\sim}{\rm 10^{17} \,
s^{-1}}$ may be surpassed significantly.
