You’ve been taken to prison.
Because you still have your lasergun, use it to shoot at the red main powerline above you. This will distract the guards and you can get out. But the next obstacle are the laserbeams blocking you way. Shoot at the red origin of the beams to destroy the machine. Once the beams are gone, use the origin of the beams to find a GRENADE.
Walk further to the left to try to leave the ship but then you face Curien again. After the fight, search his body to get the CRYSTAL from him and walk further to the left to find a spaceship. Use it to leave this place.
Game source: A copy of the game was found here on the internet.