When it comes to engraving materials, the choice between a diode laser and a CO2 laser is significant due to their different capabilities. Diode lasers typically operate at a wavelength of around 800 to 900 nm, making them best suited for materials like glass, wood, and certain plastics. They can effectively engrave on soft metals such as aluminum and brass with appropriate settings.
On the other hand, CO2 lasers, with their longer wavelength of approximately 10,600 nm, are more versatile and can engrave a wider variety of materials. They excel at engraving non-metal materials, including acrylic, rubber, leather, and some textiles, as well as wood. CO2 lasers can also mark and engrave certain types of metals more effectively than diode lasers, especially when used with a metal marking spray.
In summary, while diode lasers are limited to certain materials like wood and basic plastics, CO2 lasers offer enhanced capabilities, allowing for engraving on a broader spectrum of materials, including a variety of organic and synthetic surfaces, as well as metals.