Power of the Strongest Laser - The Physics Factbook
100 TW/cm 2.. (power density) The largest and most powerful laser in the world is the NOVA laser.. It is located at the Lawrence Livermore National Laboratory in California.. The NOVA laser is about as long as a football field and is three stories high.. The power of the NOVA laser is approximately 1..0 × 10 14 watts (100 terawatts)..