I understand that in early 2008, scientists at the University of Michigan Laboratory developed a laser beam that was two times stronger than other existing lasers in the world at the time.
Scientists add amplifiers to the "Dingli" laser system to create a new laser beam. "Dingli" is a titanium-doped sapphire laser. It is a large-volume occupant of several chambers. Once the light feedback enters the system, it will be emitted between the continuous mirror and the optical component. This is precisely the process of energy focusing. At the same time, the laser can emit energy every 10 seconds. The previous maximum output power of "Dingli" was 50 terawatts (5 Ë‡ 13 watts), and the energy of the laser beam after adding the amplifier was up to 300 terawatts (3 Ë‡ 14 watts). The measurement results show that the intensity of the laser can reach 2 Ã— 1022 watts per square centimeter, and its instantaneous energy is equivalent to using a huge magnifying glass to direct the sun to all the beams of the earth to a gravel. The laser's emission time is only 30 femtoseconds, and the time is extremely short, but the energy can be concentrated to a point of 1.3 microns, which is equivalent to one percent of the diameter of human hair.
On July 5, 2012, the US National Ignition device fired 192 lasers and combined them into a laser pulse, producing 500 watts of peak power, which is higher than the total amount of electricity used in the United States at any given time. More than 1,000 times, and is the most energetic laser pulse emitted in human history. According to the presentation, the pulse emitted this time was aimed at an object with a diameter of about 2 mm and lasted for 23 billionths of a second. The emission of this pulse is of great historical significance for fusion devices intended to generate enormous energy in a nuclear fusion reaction similar to that occurring in a hydrogen bomb. "The scientists have taken an important step in exploring clean fusion energy," said Edward Moses, head of the National Ignition Unit.
Richard Patraso, senior research scientist at the Massachusetts Institute of Technology, said: "This 500 terawatt (5 Ë‡ 14 watt) power laser pulse is an extraordinary achievement of the National Ignition Research Group in the United States - creating only in the experimental environment The fusion reaction deep inside the star is unusual for scientists in the United States and around the world who are constantly pursuing basic science and laboratory fusion ignition targets under extreme preconditions."
The speech said that since the 1950s, scientists have been trying to control the nuclear fusion reaction in hydrogen bombs. Fusion ignition will be a self-sustaining response and will release large amounts of energy beyond the balance of profit and loss. Because the duration of the laser pulses is extremely short, the total energy required is not as much as it sounds. They are stored in huge batteries like capacitors in the US national ignition device. Moses, the director of the National Ignition Center, said that the successful launch of the pulse is a milestone in the fusion ignition of the US National Ignition Program. Although the national ignition device has performed a number of similar energy natural demonstrations with a single laser beam, it is still the first time to operate with this 192 laser beam at this sound barrier.