  We have investigated the Unruh effect in Anti de-Sitter (AdS) spacetime by
examining the response function of an Unruh-DeWitt particle detector with
uniform constant acceleration. An exact expression of the detector response
function for the scalar field has been obtained with different levels of
non-linearity in even dimensional AdS spacetime. We also showed how the
response of the accelerated Unruh detector coupled quadratically to massless
Dirac field in $D$ dimensional $(D \geq 2)$ AdS spacetime is proportional to
that of a detector linearly coupled to a massless scalar field in $2D$
dimensional AdS spacetime. Here, the fermionic and scalar matter field is
coupled minimally and conformally to the background AdS metric, respectively.
Finally, we discuss about the extension of the results for more general
stationary motion.
