How far can a laser pointer travel?

The irradiation point of the laser pen depends not only on the output power and apparent brightness of the laser reflected from the surface, but also on the color version of the human eye. For example, the human eye is most sensitive to the visible spectral wavelength of 520 nm to 570 nm and less sensitive to the red and blue laser wavelengths. Therefore, the 532 nm green laser pointer is brighter than other color lasers with the same output power. Do not operate the laser pen at an ambient temperature of up to 35 ° C or less than 0 ° C to avoid accelerating laser aging. The continuous working time of the laser pen shall not exceed 2 minutes in winter and 1 minute in summer to prevent aging. If it is not used for a long time, be sure to remove the battery. Place the laser pen in a moisture-proof and anti-static place. This will be another important sign of your research. Having the right power supply is important because almost every university on earth has a science department with the strongest laser pens for some research. Now, some more advanced lasers will enable you to control power, which is something you should always consider. If one experiment requires 100 MW and another requires 1000 MW or 1 watt, you can manually change the power instead of completely purchasing a new laser to carry out different types of research within your budget.