Astronomy Powerful Green Laser Pointer Range
In addition, what the qualified laser pen gives out must be monochromatic light, even if pass through prism also won't produce dispersive phenomenon, and the chromatic light that ordinary color lamps and lanterns gives out is often mixed by red, green, blue three basic colors of the complex chromatic light, pass through prism can "appear". The astronomical green star pen pointer is usually a laser pointer with green light. The working medium of astronomical green laser pointer is solid (such as lithium triborate cesium crystal) and gas (such as carbon dioxide). Green light is generally solid astronomical green star pen pointer, the main components are excitation source, concentrating cavity, resonant cavity mirror. And there was no difference in the brightness of any qualified laser pointer beam except in bright light - the beam fired into the sky would "snap out" at the same height, regardless of the power of the laser pointer, a visual phenomenon known as the "Dundar effect".
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However, Heisenberg's uncertainty principle forbids pulses that are too short for a single-mode astronomical green star pen pointer. However, you need to generate pulses of less than 100 FS, or a millionth of a second. Therefore, laser designator crow materials that can emit light in a very wide band (spectral width of tens of nanometers) are selected and the cavity is constructed so that the astronomical green laser pointer effect can be achieved in the whole wavelength range, i.e., multi-mode. All of these patterns need to be synchronized. Only when they are all fired at the same time is the transmitted pulse shortened. However, each of them is randomly synchronized according to the spontaneous radiation that produced it. To solve this problem, a "saturation absorber" was added to the cavity. This is when the pattern is distributed over time and opaque at low light intensity, but through the strongest, i.e. when the pattern occurs. It happens at the same time.
2021-12-06 12:56:13
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