A dye laser is a type of laser that uses organic dye as its gain medium. These dyes can be dissolved in a solvent, allowing the laser to produce a wide range of colors by tuning the laser's output. This versatility makes dye lasers useful in various applications, including spectroscopy and medical treatments. Dye lasers are typically pumped by another light source, such as a flashlamp or another laser. They are known for their ability to generate short pulses of light and can be adjusted to emit different wavelengths, making them valuable tools in research and industrial settings.