The part should be VWT-1086 and is used on the US Alpha Turn models as follows...
CLD-2090, CLD-3090, CLD-D501, CLD-D502, CLD-D701, and CLD-D702
There are also several clone models that use the same chassis such as the ProScan PLSD43, Denon LA-2100 & LA3100, etc... It was a very common chassis so there should be plentiful parts if you are looking for the laser on them.
Here is the link to the 702 manual we have on file (see page 10 of the pdf)
http://manuals.lddb.com/LD_Players/Pion ... /CLD-D702/