What does the original laser pointer look like?
The color of the Burning Laser Pointers beam is determined by the wavelength of the light emitted by the laser diode indicated in the laser pointer. Our laser pointer only emits green light. Green light is the most obvious color of the human eye. This makes the beam of our laser pointer very bright, showing a spectacular bright green. On the other hand, the sloppy green laser pointer emits not only green light but also infrared light. Infrared rays can be seen by the human eye, so the beam of this inferior laser pointer is not bright enough and it is also very dangerous. There is an infrared filter inside the real green laser pointer, which can block infrared rays. The sloppy laser pointer removes these filters. Without this filter, these laser pointers are very dangerous. You may hurt your eyes until the end without even realizing it.
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Safety Guidelines for Astronomical Lasers-Although a laser is a great tool for astronomers, the beam can be very dangerous if the laser is used improperly. Do not use lasers on airplanes, or even when the airplanes are in the air. When not using the laser to point at celestial bodies, keep the laser off. Do not let children play with laser. The first condition for generating light by stimulated emission occurs in the valence band in the conduction band of the semiconductor. In order to bring about ion inversion, P-type and N-type heavily doped electrons are usually pumped to obtain a PN junction , Therefore, under the action of the applied voltage, appeared near the junction area of ​​the ion inversion material-the Fermi level of the electron is stored in the high EFC below the conduction band, and the Fermi level is located at the low place below the conduction band EFV is stored in a hole in the valence band.
2021-11-01 11:42:46
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