What is one characteristic of laser light in terms of its wavelength?

Laser light is characterized by being monochromatic, meaning it consists of a single wavelength of light. This property allows lasers to produce a very specific color and to have a very narrow spectral width. Monochromatic light is essential in various applications, including medical and dental fields, because it can be precisely focused and allows for targeted treatment with minimal damage to surrounding tissues.

In contrast, multichromatic and polychromatic light contain multiple wavelengths, which can result in a broader spectrum of colors and less precision in applications requiring specific wavelengths. Non-directional light spreads out in multiple directions, unlike laser light, which is highly collimated and travels in a straight line, maintaining its intensity over long distances. These characteristics of laser light make it advantageous for procedures that require precision and control, such as in periodontal treatments.