A turbolaser requires constant temperature regulation from built-in cooling units. Quad Laser Cannons are starship blasters that are usually turret mounted. Quad lasers have excellent and fast moving targeting, making them popular for smuggler ships. The Millenium Falcon was equipped with two quad lasers. Ion Cannons fire bolts of pure ionized energy that damages mechanical and computer systems by overloading and disrupting circuitry.
Ion cannons cause no structural damage but can disable ship weapons, shields and engines.
They come in many sizes, including starship cannons and huge planetary defense cannons, like the one used by the Rebels on Hoth. Planet Defender ion cannons are mounted inside multistory cylindrical towers.