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The past twenty years, committed to the development and application of neodymium glass laser drive - "SG" series devices, has made remarkable progress, and promote our inertial confinement fusion experiments and theoretical studies, and a place in the international arena. 1977, the Shanghai-ray machine using a 100 billion-watt laser system devices, inflatable glass shell targets irradiated nearly hundredfold body compression. Laser fusion research in China has entered an important stage of development of the step argument to the principle of implosion, and laid the foundation for future long-term sustainable development. In 1980, Wang Ganchang the proposal put forward to the construction of pulse power of 1 trillion watts solid state laser device, called a laser on the 12th experimental device (SG I). The loss caused by storage of Laser Pointers should be reduced to the lowest level.
The IFX plans - U.S. laser weapons development prospects (Photos). U.S. Air Force pilot laser shooting attack simulated ballistic missile target. Laser weapons by launching the beam to a laser beam. The IFX plans is the U.S. space-based laser weapons development program. Research Bureau of the U.S. Department of Defense and U.S. Air Force jointly outlined the twenty-first century with a laser weapon in space operations blueprint, this program is expected to be completed in 2013, the early and mid-term of the plan has been completed, the U.S. Air Force is focused on capture difficulties. The United States in the development of laser weapons, not only to target limited in space, while extending their reach on the development of space-based, airborne laser and ground anti-satellite laser weapons, and joint development of the ground tactical laser weapons developed jointly with Israel. Do perform the purchase of flashlight keychains well.
Currently, APC system has passed the test, is preparing for combat. The performance of the United States envisaged in the future airborne laser weapons as follows: the laser medium Shots stored in the aircraft cabin 40; radiation target time for 3-5 seconds; laser power of 300 megawatts; a maximum range of 600 km; average cruising time of 48 hours. Main reason for early 2000 in preparation for a new Boeing 747-400F aircraft platform, the installation of airborne laser weapon demonstrator, however, new problems encountered during the installation process, a wider range of aircraft modification is the quality and appearance of the laser device does not meet the requirements of the U.S. Missile Defense Agency decided that the experiment be postponed until 2004-2005. The goal of the purchase of flashlight keychains has been finished.
8-channel laser amplifier chain arranged in space, technical parameters and the world's most advanced running OMEGA devices. In 2000, SG device 8 roadbed II frequency reached eight trillion watts of power, began trial operation in target practice. In 2000, driven directly by the neutron yield of 4 billion indirectly driven by the neutron yield of 100 million, direct drive shock wave pressure up 1.5TPa indirectly driven shock pressure up to 3.7TPa. In August 2001 the SG Ⅱ device built, the total output energy of 600 kJ / ns, or 8 trillion watts / 100 picoseconds, the overall performance reached the international advanced level of similar devices. "SG II hundreds of optical equipment is integrated in a space the size of a football field. Some information of flashlight keychains needs to be added.
The basic principle of the laser, the material is similar particles (ie atoms, molecules, ions). These levels in the different energy levels in these energy levels, E1 and E2, respectively, the two energy levels the amount of E1 comes with less energy, is a low energy level. E2 comes with more energy. High energy level. As the particles contained in the energy, in general the majority of particles in the low energy level, energy level in the minority. Therefore, the number of particles in the low energy level (E1) is greater than the number of particles of high energy level (E2). Available in Figure 1, the distribution of the number of particles in the low energy level (E1E2). A particle level distribution in Figure 1.1 Stimulated absorption Stimulated absorption of particles of low energy level E1 to absorb the alien light of a certain frequency r21. The stock investment and loss of flashlight keychains can be kept at the least level.