Types of Lasers for Engraving
Laser names can describe a source architecture, gain medium, or wavelength-not necessarily how the beam moves. Use this page to choose the detailed source guide that matches the machine or process you want to understand.
Source type versus motion system
MOPA, Q-switched, diode, CO2, and UV describe aspects of the light source. Galvo and gantry describe how the beam moves. Source, wavelength, optics, controller, and motion system must be evaluated together.
Continuous-wave versus pulsed output
CW and pulsed describe how optical power is delivered over time. They are separate from wavelength and motion: fiber, CO2, diode, and UV sources may use different temporal regimes depending on their construction and application.
Read Continuous-Wave vs Pulsed Lasers for physical differences, common source types, strengths, and poor-fit applications.
MOPA fiber lasers
MOPA sources separate pulse generation from amplification and commonly expose adjustable pulse duration. That flexibility is valuable for metal marking, texture, color discovery, and controlled thermal experiments.
Read What Does MOPA Mean? for pulse-length physics and parameter interactions.
Q-switched fiber lasers
Q-switched sources store energy while the cavity is lossy, then release it as a short high-peak-power pulse. They are widely used for durable marking, engraving, cleaning, texture, and coating removal.
Read What Does Q-Switched Mean? for cavity behavior and frequency coupling.
Diode lasers
Semiconductor diode lasers are compact and accessible, commonly serving wood, leather, paper, coated surfaces, and receptive craft materials. Their controller modulation should not be confused with MOPA optical pulse duration.
Read How Diode Engraving Lasers Work for wavelength, beam shape, and practical controls.
For a portable dual-wavelength example, review the LaserPecker LP4. Its visible diode and infrared source address different materials; confirm the software, file-format, workspace, guarding, and extraction workflow required for your intended use.
CO2 lasers
CO2 gas lasers emit far-infrared light that is strongly absorbed by many organics and polymers. They are especially useful for acrylic, wood, leather, rubber, fabric, and broad cutting or engraving work.
Read How CO2 Engraving Lasers Work for gas excitation, thermal processing, airflow, and focus.
UV lasers
UV sources provide short wavelengths, strong absorption in many specialized materials, and the potential for fine features with reduced heat-affected area. UV is a wavelength category, not one pulse architecture.
Read How UV Engraving Lasers Work for harmonic generation, photon energy, and precision ablation.
Choosing and using a source
Choose from real material tests, required feature size, throughput, software compatibility, safety needs, support, and total system design. Every wavelength requires suitable guarding, extraction, verified material safety, fire precautions, and supervision.
Continue with What Laser Should I Buy? or check whether a specific system fits the Rasterizer workflow in Laser Compatibility.