Laser output to drive a Voice coil motor

I want to use the laser output of the MKS DLC32 to drive a Linear Voice coil motor (VCM) through a linear amplifier which has analog input.
A diamond needle is attached to the VCM and create dot matrix on a piece of granite from a bitmap/raster image. The dot matrix is created through impact force from the VCM. This process is called impact etching on granite. Produce images/pictures/letters on granite the same as CO2 laser does.

Before I buy the MKS board to control my stepper motor CNC (NEMA 34, rack& pinion 2x3 meters). I would like some advices from MKS experts how to implement my above requirements to MKS DLC32.
Thanks in advance