Narrow-band injection locking of a spectrally dense molecular laser system - HgBr (B → X)

Narrow-band injection locking of a discharge driven HgBr (
B\rightarrow X
) laser with
\Delta\omega
(FWHM) < 0.02 cm
^-1
(
\Delta\lambda < 0.005
Å) is reported. For injection fluxes as low as 3.3 W/cm
²
(
\Delta\omega= 0.015
cm
^-1
), approximately 80 percent of the laser output Was in this band. These results and previous work are analyzed in terms of a Simple Fokker-Planck diffusion model of the HgBr
B^{2}\Sigma
rotational manifold.