23 Feb Types of Laser Engravers

Selecting a laser engraver is a decision influenced by material behavior and process requirements. Each substrate absorbs laser energy differently, and the wavelength of the laser determines how effectively that energy interacts with the surface.

Explore the different types of laser engravers, their capabilities, material compatibility and applications.

1. Fiber Laser Markers

Fiber lasers operate at a wavelength of 1064 nm in the near-infrared spectrum. These systems generate and amplify laser energy within a doped optical fiber, which serves as the gain medium and the beam delivery system.

Fiber lasers offer various capabilities, including:

• High-speed marking: The strong absorption of the 1064 nm wavelength in metals enables rapid energy transfer. This performance supports high-throughput environments where cycle time consistency impacts line efficiency.
• Deep engraving: At higher power densities, fiber lasers transition from surface marking to material removal. The resulting engravings remain readable after heat treatment and chemical exposure, making them well-suited for permanent identification.

Fiber lasers are compatible with a wide range of materials, such as:

• Stainless steel
• Aluminum
• Titanium
• Ceramic
• Plastic

Some applications of fiber lasers include:

• VIN marking and component traceability: Fiber laser markers produce deep, uniform marks that meet original equipment manufacturer (OEM) durability and legibility requirements throughout a vehicle’s service life.
• Firearms serialization and compliance marking: The permanence of fiber laser engraving supports regulatory standards that require marks to remain intact under mechanical and environmental stress.
• Aerospace parts tracking: High-contrast, repeatable fiber laser markings enable part identification across long life cycles, including exposure to vibration and chemical processing.

Standard fiber lasers deliver speed and permanence for metal marking, but some applications require finer control over how laser energy is delivered to the surface. This is where master oscillator power amplifier (MOPA) fiber lasers extend the capabilities of fiber systems.

MOPA Fiber Laser Markers

MOPA fiber lasers feature adjustable pulse duration and frequency. They separate pulse generation from amplification, allowing operators to tailor the rate at which energy is delivered to a surface.

Some of their capabilities include:

• High contrast marking: By controlling pulse width and frequency, MOPA lasers produce dark, legible marks on plastics.
• Corrosion-resistant annealing: The laser can create oxide-based markings on stainless steel and other metals while preserving structural integrity.
• Color marking: MOPA fiber lasers enable the generation of multiple colors on metals through controlled oxidation.
• Black marking: Fine control allows the creation of uniform black marks on anodized aluminum and other metals.

The combination of fine energy control and minimal material disruption makes MOPA lasers ideal for various applications:

• Medical devices: MOPA laser markers provide corrosion-resistant and precise markings for surgical instruments, implants and other medical components.
• Consumer electronics: These systems’ controlled pulse width and frequency allow consistent contrast and color marking on housings and components.
• Jewelry: The color and black marking capabilities of MOPA systems make them excellent engraving machines for jewelry, as they enable aesthetic customization or the addition of serial numbers on precious metals.
• Automotive and aerospace: MOPA laser markers enable durable markings on metals and alloys used in critical parts, providing traceability and identification.

2. UV Laser Markers

UV laser markers operate at a 355 nm wavelength and use a photochemical interaction to engrave material. The laser energy breaks molecular bonds, and the system’s marking process produces a small heat-affected zone.

Some of these systems’ capabilities include:

• Marking without heat damage: UV lasers maintain material integrity on substrates that would otherwise melt or discolor under infrared wavelengths.
• Micromarking: The short wavelength of these systems supports small spot sizes, enabling dense data and fine text.
• High contrast: On transparent or semitransparent materials, UV laser markers produce crisp, readable marks through controlled surface disruption.
• Controlled depth engraving: UV systems enable precise control, which is essential for working with thin or layered materials.

Compatible materials include:

• Glass
• Metals
• Plastics
• Paper
• Wood

Operators can use UV laser markers for:

• Medical devices: UV lasers can be used to manufacture syringes and other disposable items.
• Electronics: The fine feature sizes and low thermal impact of UV laser systems make them suitable for marking printed circuit boards (PCBs) and component traceability.
• Packaging: These systems’ high-contrast marks support branding, compliance and lot coding on sensitive packaging materials.
• Anti-counterfeiting and authentication: UV lasers enable high-resolution marks that are difficult to replicate and easy to verify.

3. Green Laser Markers

Green laser markers operate at a wavelength of 532 nm. This wavelength sits between infrared and ultraviolet and introduces a different interaction profile with any industrial materials. Green laser markers deliver cold marking technology because energy couples more efficiently at the surface, which reduces thermal diffusion into surrounding areas.

Green laser engravers feature:

• High-precision micromarking: The 532 nm wavelength supports fine line widths and small character sizes, enabling dense data and detailed graphics on compact components.
• High absorption on reflective materials: Green laser markers interact efficiently with copper, gold and other reflective surfaces, improving mark consistency and readability.

Compatible materials include:

• Plastic
• Metal
• Copper
• Aluminum
• Stainless steel

Primary applications include:

• Precious metal jewelry engraving: Green lasers produce clean marks on gold and other reflective metals.
• Electronic components identification: The fine-feature marking supports traceability on small, densely populated components.
• Aerospace and automotive electronics: The ability to mark reflective and sensitive materials makes green laser markers valuable for electronic assemblies used in demanding environments.

4. Vanadate Laser Markers

Vanadate laser markers are based on neodymium-doped yttrium orthovanadate (Nd: YVO₄) crystal technology. These systems produce an exceptionally high beam with a well-defined mode structure.

This beam quality allows vanadate laser markers to concentrate energy into small, consistent spot sizes. As a result, they are often selected for applications that require extreme sharpness and visual definition.

Some of their capabilities include:

• Deep and color engraving: The controlled energy delivery of these systems allows for material removal and surface oxidation.
• High-speed processing: The rapid pulse repetition rates of vanadate laser markers enable the creation of complex marking patterns.
• Content versatility: These systems are suitable for text, codes, logos and intricate graphics across a range of substrates.

Vanadate laser systems are compatible with:

• Aluminum
• Copper
• Metal
• Plastic
• Stainless steel

Operators can use them for:

• Automotive day and night design buttons: Vanadate lasers create sharp, backlit markings that remain legible under varying lighting conditions.
• Electronics and electronic housings: The fine detail and consistent contrast support functional and aesthetic requirements.
• Packaging components: The vanadate laser markers’ high-speed marking capabilities enable clean, repeatable codes and graphics.
• Medical devices: Vanadate laser markers’ precision marking supports traceability in medical device manufacturing.

5. CO2 Laser Markers

CO2 laser markers operate at a wavelength of 10,600 nm in the far-infrared spectrum. At this frequency, laser energy is readily absorbed by organic and carbon-based materials. The system generates a laser through gas excitation within a sealed resonator, producing a stable beam that interacts through thermal processes.

CO2 lasers are valued for their:

• Broad material versatility: A single laser source supports multiple substrates across various product lines.
• High-speed marking: CO2 laser markers are suitable for packaging and consumer goods applications.
• Precision and consistent quality: These systems produce uniform marks with clean edges across large production volumes.

CO2 laser markers are compatible with:

• Wood
• Leather
• Textiles
• Plastics
• Glass

Operators can use these systems for:

• Packaging: The high-speed marking enables lot codes, dates, branding and compliance information on packaging.
• Electronics: CO2 laser markers produce precise, high-contrast markings on nonmetal enclosures and interface layers used in electronic assemblies.
• Medical devices: The clean, consistent marking supports traceability and identification on nonmetal components and sterile packaging materials.
• Consumer goods: The ability to engrave organic materials enables the creation of logos and decorative elements across a wide range of products.
• Automotive interior components: CO2 lasers are commonly used for marking interior trims and materials that require high visual quality and repeatability.

Partner With Telesis Technologies, Inc. for Laser Engraving Solutions

Telesis Technologies, Inc. offers a range of laser engravers designed for compliance and optimal performance. We operate as a turnkey provider, managing system design, custom integration, Merlin^® laser software and ongoing service. When you need service, we come to you for product fixes.

Our systems are trusted across the automotive, medical device manufacturing, packaging, food, aerospace and defense industries. Organizations including NASA, the Department of War and other federal agencies rely on our products, and we support regulated applications with relevant medical and automotive certifications. When confidentiality is required, we protect your processes and intellectual property. Many of the employees who work on making our products are veterans.

For teams seeking lower up-front investment, our MOPA and XpressMark^™ laser systems offer accessible entry points. These systems are in stock now and ready to ship.

Fill out a contact form to talk to an expert today to find your ideal type of laser engraving machine.