The different laser wavelength and colors

Lasers can be categorized by wavelength into visible light, infrared, ultraviolet, X-ray, and multi-wavelength tunable types. Currently, industrial applications primarily use infrared and ultraviolet lasers. Examples include:

CO₂ lasers emitting 10.64 μm infrared light,

Krypton lamp-pumped YAG lasers emitting 1.064 μm infrared light,

Xenon lamp-pumped YAG lasers emitting 1.064 μm infrared light,

Semiconductor side-pumped YAG lasers emitting 1.064 μm infrared light.

Infrared light covers a specific wavelength range. For reference, visible light (e.g., LEDs) falls within:

Red: 642–700 nm

Green: 568–573 nm

Yellow: 585–590 nm

Infrared lasers typically operate within the far-infrared wavelength range:

Near Infrared (NIR) | 700–2,000 nm | 0.7–2 μm

Mid Infrared (MIR) | 3,000–5,000 nm | 3–5 μm

Far Infrared (FIR) | 8,000–14,000 nm | 8–14 μm