  A dichroic atomic vapor laser lock (DAVLL) system exploiting
buffer-gas-filled millimeter-scale vapor cells is presented. This system offers
similar stability as achievable with conventional DAVLL system using bulk vapor
cells, but has several important advantages. In addition to its compactness, it
may provide continuous stabilization in a multi-gigahertz range around the
optical transition. This range may be controlled either by changing the
temperature of the vapor or by application of a buffer gas under an appropriate
pressure. In particular, we experimentally demonstrate the ability of the
system to lock the laser frequency between two hyperfine components of the
$^{85}$Rb ground state or as far as 16 GHz away from the closest optical
transition.
