Common Laser Types

There are many different types of lasers, but two lasers commonly used in industrial applications are Nd:YAG and CO2 lasers.

Nd:YAG Lasers - Nd:YAG lasers are formed from a mixed oxide crystal that has high thermal conductivity. High-intensity flash-lamps drive light energy into the crystal to excite the molecules. The lamps can be driven in pulsed or continuous-wave modes.

CO2 Lasers - In a CO2 laser, carbon dioxide gas is mixed with helium and nitrogen to generate a beam. CO2 lasers are capable of emitting very high power, but in short pulses. CO2 lasers can be continuous-wave (CW) or pulsed, although both capabilities can exist in a single unit. They are often used for boring, cutting, and engraving.

Generally, Nd:YAG lasers are more often used with metals, and CO2 lasers are more often used with non-metals. However, the high power of CO2 lasers makes them a good choice for thick metal cutting, deep penetration welding, and high-speed production. CO2 lasers are more power efficient and are typically less expensive than Nd:YAG lasers, but Nd:YAG lasers have simpler maintenance requirements.

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