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For the red laser pointer, we must first distinguish the laser diode used by each pointer. Different wavelengths are assigned to different colors. The shorter this wavelength, the more energy a single proton uses. Basically, low-wavelength laser diodes are more destructive than long-wavelength laser diodes. The wavelength of the red laser diode is the largest (635-750nm), while the wavelength of the orange-yellow laser diode is only 575-635nm. We take products and transparency seriously. Therefore, test each laser with a power meter to create a series of videos. Recently, a yellow laser pointer with a wavelength of 593nm has been launched on the market. Based on DPSS technology, by adding nonlinear crystals, two lasers with wavelengths of 1064nm and 1342nm are obtained. Due to the complexity of the process, even in the jump mode, if overheating or overcooling occurs, the yellow laser pointer will become unstable and inefficient, and the temperature output will be between 1-10 milliwatts.