Use after + phrase, and use later alone (at the end of a sentence or phrase).
I’ll call you after I get home from work.
You can say “later + time period” to refer to an unspecified time in the future, which is still within the period, for example:
Never end a sentence with “after.” Instead, you can use “afterwards”
No, we went out for drinks after.
No, we went out for drinks afterwards.