Intensity of Scattered Light Over Time Laser Pointer

Not all laser focusing research requires a beam that is visible to the human eye. In fact, most of the ongoing research utilizes wavelengths in the UV (ultraviolet) and IR (infrared) spectrum, which are invisible to the human eye without special equipment. Many studies are done using invisible light, but other studies require visible light beams, and the visible spectrum includes all the colors of the universe.

 

All the colors we see are specific nano-wavelengths, representing the actual size of the wavelength itself, from long to short (UV and IR are the same). The number of nanometers (nm) that accompany the laser light indicates a specific color or frequency. However, almost every visible color has multiple frequencies, so try to be very specific. For example, the most common green wavelength is 532 nm, which is the brightest color for the human eye, but the same is true for 540 nm in this range. As green approaches yellow, it begins to change. For example, 561nm is yellow. Therefore, the more specific, the more suitable for research.