The water is there to trick you :3

Nice simple chamber. Did you add the pillars and pit of goo as set dressing? If so, not a bad touch. Once suggestion that I would like to make is that you might want to either lower the lazer, or raise the light bridge to make it a little easier for the player to get to it, and/or make the portal area near where the lazer beam hits to give the player more options on where they are going to move the lazer.