CT and MT both have Reflec, a suit designed to defend against lasers. Base defense of Reflec is 10 against lasers specifically, which is considerable: a TL9 laser rifle has a penetration of 9. Here's where things get interesting: reflec can be worn with other armor, and Striker provide a bonus for stacked defenses. Wear reflec with a Combat Environment Suit, and you have an effective defense of 16 per the Armor Combination Table, rendering lasers of questionable value when a simple rifle has a better chance of doing damage against the CES. The only combat value of the low tech laser is as a targeting weapon for missiles or artillery or if you happen to be facing opponents who are poorly armored. I'm not sure if reflec is any good against the later TL13 lasers.