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Example of petawatt laser. The Station of Extreme Light (SEL, 极端光物理线站) is laser facility aimed at producing a laser with 100 petawatts (PW) of peak power. The station is currently under construction in Shanghai, China. [1] The laser may be powerful enough to produce matter and antimatter directly from a vacuum [2] (the Schwinger ...
Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot.
Powerful laser is 'brightest light in the universe'—The world's most powerful laser as of 2008 might create supernova-like shock waves and possibly even antimatter "Laser Fundamentals" an online course by F. Balembois and S. Forget. Northrop Grumman's Press Release on the Firestrike 15 kW tactical laser product
Laser types with distinct laser lines are shown above the wavelength bar, while below are shown lasers that can emit in a wavelength range. The height of the lines and bars gives an indication of the maximal power/pulse energy commercially available, while the color codifies the type of laser material (see the figure description for details).
Most types of laser are an inherently pure source of light; they emit near-monochromatic light with a very well defined range of wavelengths.By careful design of the laser components, the purity of the laser light (measured as the "linewidth") can be improved more than the purity of any other light source.
In this Q-switched mode, output powers of 250 megawatts and pulse durations of 10 to 25 nanoseconds have been achieved. [4] The high-intensity pulses may be efficiently frequency doubled to generate laser light at 532 nm, or higher harmonics at 355, 266 and 213 nm. Nd:YAG absorbs mostly in the bands between 730–760 nm and 790–820 nm. [3]
The Berkeley Lab Laser Accelerator (BELLA) is a laser built by the Thales Group and owned and operated by the Lawrence Berkeley National Laboratory. [ 1 ] [ 2 ] On 20 July 2012, BELLA fired a 40 femtosecond laser pulse , establishing a world record for most powerful laser.
Laser light is useful in entertainment because the coherent nature of laser light allows a narrow beam to be produced, which allows the use of optical scanning to draw patterns or images on walls, ceilings or other surfaces including theatrical smoke and fog without refocusing for the differences in distance, as is common with video projection ...
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