The Behemoth from the Expanse Series had a laser with a range of literal light years.
Granted, it was a comm laser, but they did weaponize it at one point.
Even if we assume that the beam had a solar-system sized diameter after 4 ly, a weaponized output should still be in ship-killer range after an AE or five.
Ultimately, the weapon was never fired (and would have melted half the ship if it ever were).
The Behemoth from the Expanse Series had a laser with a range of literal light years.
Granted, it was a comm laser, but they did weaponize it at one point.
Even if we assume that the beam had a solar-system sized diameter after 4 ly, a weaponized output should still be in ship-killer range after an AE or five.
Ultimately, the weapon was never fired (and would have melted half the ship if it ever were).