[China Instrument Network Instrument R&D] The Shanghai Super Strong Laser Experimental Device (SULF) has made a major breakthrough: On the evening of October 24, the device successfully achieved a laser output of 10 watts, reaching the leading level of similar international research. It is also the highest light source that humans can master. This is a major step forward in the research of our super-ultra-short laser experimental device, following the achievement of 5 watts of international leading results in August 2016. The SULF installation is planned to be completed by the end of 2018 and open to users.
The joint laboratory of Shanghai Institute of Optics and Laser Technology, Shanghai University of Science and Technology is located in Zhangjiang, Pudong. Super-ultra-short lasers can create unprecedented super-electromagnetic fields, ultra-high energy density and ultra-fast time-scale comprehensive extreme physical conditions in the laboratory. This achievement can be used to develop table electron accelerators and ultra-fast X-ray sources, imaging the detection of atomic motion in proteins, revealing the mysteries of life; it can be used to develop small laser protons for the treatment of cancer; Detect the movement of electrons in atoms, promote the progress of materials science and information technology; can be used to produce antimatter and detect dark matter, study astrophysics and the origin of the universe. Many countries in the world have invested heavily in the development of large ultra-short ultra-short laser devices with 10 beats-watt level and fierce competition in scientific research. For example, the EU-supported Extreme Light Facility (ELI) project is building several sets of 10 watt laser user devices simultaneously. France and the United Kingdom are also developing their own 10-step watt laser devices. The United States, Russia, and Japan have proposed 100 watts. The research idea of ​​ultra-short ultra-short laser device.
1 tile = 1 petawatt. According to reports, a 1-watt tile laser focused to the light intensity corresponding to a size of 10 microns corresponds approximately to placing a magnifying glass between the Earth and the sun, focusing all solar radiation on the Earth to a scale of hairline thickness. . Only the interior of a star or the edge of a black hole has similar extreme physical conditions.
With the support of the National Development and Reform Commission and the Shanghai Municipal Government, the development of the SULF (Super Ultra Short Laser Experiment Unit) with the core of a 10 watt laser has been incorporated into Shanghai to create a global innovation and innovation center. The first major projects of the world-class major science and technology infrastructure cluster will be one of the core platforms of the Shanghai Zhangjiang Comprehensive National Science Center.
The SULF laser device uses a chirped pulse amplification technique based on a large-diameter Ti:sapphire crystal. The researchers solved key scientific and technological problems such as large-caliber high-gain laser amplifiers, high-performance laser pump sources, broadband high-order dispersion precision control, and gain narrowing suppression. In the international community, they achieved the highest energy levels of more than 300 joules (half). High full width reaches 70nm) Laser amplified output. The 10-kilowatt laser main amplifier adopts a titanium jewel crystal with a diameter of 235 millimeters, which was independently developed by SHKM. This is the first laser crystal that has been successfully developed and laser-amplified and has a diameter of more than 200 millimeters. It is also the largest known international caliber. Laser magnification crystals.
The highest energy of the nanosecond helium pulse output by the Ti:sapphire main amplifier is 339 Joules, the laser pulse width is 21 femtoseconds after compression by the pulse compressor, the compressor efficiency is 64%, and the maximum peak power of the compressed laser pulse is up to 10.3 beats. Watts, which is the highest known peak power of laser pulses.
(Original title: Shanghai Super-strong laser experimental device made a major breakthrough in the successful development of 10 watts laser amplification output)
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