It depends on the board. Since it's rainbow and theres an A, there probably is no draw. Represent the ace, and if they call they're probably repping an A and worried about your AK.

If they have something like AJ the worst thing you can do is bet on every street hoping that they'll fold. They won't.

You're either going to have to put on the brakes or put the pedal to the metal and push on the turn. He will fold his AJ if you bet deep. But frankly, this is too risky and typically I will just check fold. Maybe call if I think he's trying to make a move on me.