< img height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=1029820091747592&ev=PageView&noscript=1" /> What is the difference between fiber laser and Co2 laser? - Laserscheme


What is the difference between fiber laser and Co2 laser?

In the realm of laser technology, two prominent types have emerged as key players: the fiber laser and the CO2 laser. These cutting-edge devices have revolutionized various industries, including manufacturing, healthcare, and research. While both lasers serve distinct purposes, understanding their differences is crucial for choosing the appropriate tool for specific applications. Let’s delve into the dissimilarities between fiber lasers and CO2 lasers and explore their unique features.

Fiber lasers, as the name suggests, employ an optical fiber as the lasing medium. These lasers utilize rare-earth elements, such as erbium, ytterbium, and neodymium, doped within the fiber core. The laser beam is generated through the process of stimulated emission, wherein photons are stimulated to emit more photons, resulting in a coherent and amplified beam of light. Fiber lasers typically emit light in the near-infrared spectrum.

CO2 lasers operate based on a gas mixture composed primarily of carbon dioxide. This mixture is electrically stimulated to generate laser beams. CO2 lasers emit light in the mid-infrared spectrum, particularly at a wavelength of around 10.6 micrometers. This wavelength is advantageous for various materials processing applications.

There are some significant differences between these two types of lasers. Here are some of the key distinctions.

1.Laser Medium

The fundamental contrast between fiber lasers and CO2 lasers lies in their laser medium. Fiber lasers employ a doped fiber optic cable as the active medium, typically using rare-earth elements such as erbium, ytterbium, or neodymium. In contrast, CO2 lasers employ a gas mixture, primarily carbon dioxide, nitrogen, and helium, as the laser medium.


Fiber lasers operate in the infrared spectrum, typically at a wavelength around 1,064 nanometers. CO2 lasers, on the other hand, operate in the far-infrared or long-wavelength range, specifically at around 10,600 nanometers. This discrepancy in wavelengths affects their respective applications and interactions with different materials.

3.power output

Fiber lasers are known for their high power density, allowing for precise and efficient cutting, welding, and marking of materials. They are commonly used in industries like automotive, aerospace, and electronics manufacturing. CO2 lasers, while also capable of delivering high power, are more suitable for applications that require a larger beam profile, such as engraving, etching, and non-metallic material processing. Fiber lasers possess superior beam quality, characterized by a smaller spot size and higher beam intensity. This attribute enables fiber lasers to achieve fine and intricate details during material processing. In contrast, CO2 lasers have a larger beam diameter, making them better suited for applications that necessitate wider cuts or material removal.

4.operational efficiency

Fiber lasers have higher electrical-to-optical conversion efficiencies, resulting in lower power consumption and reduced operating costs. Additionally, fiber lasers offer greater reliability, as they have a simpler design, fewer components, and no gas circulation requirements, unlike CO2 lasers.


  •  Fiber lasers are widely used in various applications, including material processing (cutting, welding, drilling), marking and engraving, telecommunications, scientific research, and medical fields.
  • CO2 lasers are commonly employed in applications such as cutting, engraving, and marking of materials like wood, acrylic, paper, fabrics, and plastics. They are also used in surgical procedures, scientific research, and some specialized industrial processes.

6.Size and Complexity

    • Fiber Laser: Fiber lasers are compact and relatively simpler in design compared to CO2 lasers. Their compactness allows for easier integration into machines and systems, making them suitable for industrial and portable applications.
    • CO2 Laser: CO2 lasers are larger and more complex due to the gas mixture, cooling requirements, and higher voltage needed for operation. They often require additional optics and more sophisticated control systems.


Fiber lasers exhibit longer lifespans and require minimal servicing compared to CO2 lasers. The gas mixture within CO2 lasers may degrade over time, necessitating regular gas refills and maintenance procedures to maintain optimal performance.

In conclusion, fiber lasers and CO2 lasers differ significantly in their operational mechanisms, applications, and performance characteristics. Fiber lasers excel in high-power density applications, offer superior beam quality, and are more energy-efficient, making them suitable for precise material processing. On the other hand, CO2 lasers are better suited for applications requiring a larger beam profile and are commonly used in engraving and non-metallic material processing. Understanding these distinctions allows industries to choose the laser technology that best suits their specific needs, ensuring optimal results and cost-effectiveness.

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