High-power laser pointer ignites cigarettes
Originally a semiconductor diode. According to the different PN junction materials, green laser pointer diodes can be divided into homojunction, single heterojunction (SH), double heterojunction (DH) and quantum well (QW). Quantum well (QW) laser diodes have the advantages of low threshold current and high output output, and are used as important products in the current market. Use high-power lasers to light cigarettes and firecrackers/blow balloons/light candles/light leaves/shaver pointer cutting. Compared with laser pointers, laser diodes have the advantages of high output, small size, and long life, but the output output is quite small (less than 2mw), poor alignment, and poor monochromaticity, so it is suitable for cable TV.
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Use is restricted. The channel cannot be transferred too much, and the performance analog signal cannot be transferred. In the return module of the bidirectional optical receiver, the uphill emission generally uses a quantum well (QW) die as the light source. The basic structure of a semiconductor laser diode is shown in the figure. A pair of parallel planes perpendicular to the PN junction surface is of the Fabry-Perot type. These are the cleavage and polished surfaces of semiconductor crystals. The other sides are a bit rough, and they are responsible for the laser removal work outside the main direction. The LED has positive and negative poles, and the positive and negative poles must be matched when installing. If it is reversed, it will not emit light, but it will not damage the LED module, so don't worry. It will be fine if you reconnect it.
2022-01-06 11:42:35
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