The author of this mod is Calclavia, not me. Since this mod is missing here, I decided to post it.

This mod adds a laser to Minecraft and everything related to it. You can build even more new redstone mechanisms or an entire defense system!

Laser Emitter

Redstone powered laser. The weaker the signal, the weaker the laser. Also, the laser can do good damage, destroy the block and set it on fire. At maximum signal, it deals 20 damage and ignores armor.

Craft:

Laser Receiver

Transmits a redstone signal from the received laser depending on its power. The weaker the laser, the weaker the redstone signal.

Craft:

Mirror

Reflects the laser at an angle, can be adjusted manually or using the Focusing Matrix.

Craft:

Focus Crystal

Absorbs all directional lasers, combining their power. Aims the laser to the side, the direction can also be adjusted. More practical than a mirror.

Craft:

Focusing Matrix

Adjusts the direction of mirrors and crystals.

Craft:

Screenshots:

Works only on version 1.7.10.

Electromagnetic Coherence