drive small dc servos

Hello
i have a trotec laser machine that has faulty controller.
The rest of the machine is ok.
It has 3 dc servos (first 2 photos are x axis servo next 2 y axis servo / z is same motor as y).
What servo driver can i use to drive these motors that accepts step-dir driving signal?

The encoders are simple AB incremental rotary encoders 500CPR .
I have attached the datasheet
www.avagotech.com/docs/AV02-1046EN

i know with H bridge + mesa card can drive the servos with linuxcnc but because it is engraver machine
mesa cards firmware can't do engraving the problem is the laser source pwm modulation...

PCW i think before 1 year has told that can make a mesa firmware for real time engraving but i don't know
if this function is done yet in mesa firmware.

If i use 3 of these drives
www.leadshine.com.ua/pdf/dcs810s.pdf
leadshine dcs810s
to drive servos with step dir and a
chinese laser controller like ruida rdc6442g that outputs dtep-dir
will be better?

There is laser modulation firmware available (the datapainter module) but there is no LinuxCNC driver for this module yet.

The datapainter module is basically a stepgen that outputs data from a FIFO instead of steps, the data can either be 1 bit data or 8 bit PWM. Because its 'position locked' to a hal pin via PID it can be used for raster (using an axis commanded or actual position) a spindle encoder for cylindrical objects or a calculated path length for arbitrary paths

Linuxcnc does not do raster engraving with mesa cads.
So i will take a chinese laser controller that outputs step dir and
3 dc brushed servo drives leadshine dcs810 that accept step dir to drive servos

tommylight your engraving results are not good.
see this
www.sauno.ru/ENG/
It is hammering with needle.
Iam interested making a machine like this with linuxcnc.