Does a laser produce only one color or wavelength of light?

A laser typically produces light of a specific color or wavelength, which is a defining characteristic of laser technology. This monochromatic nature results from the stimulated emission of photons, all of which have the same energy and, consequently, the same wavelength. However, some lasers can emit light at multiple wavelengths if designed to do so, but the primary output is usually concentrated around a single wavelength.