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What Are the Differences Between Fiber Laser Vs Ir Laser?

In our daily lives, many customers are not very clear about fiber laser vs ir laser. Most of them are used in the field of laser engraving. When choosing a laser, it is necessary to understand the gap between the two. This article will describe these, hoping to be helpful to you.

ir laser
ir laser

Fiber Laser Vs Ir Laser Working Principle

Fiber Laser

Light amplification is achieved through total reflection on the inner wall of the optical fiber, and a high-energy laser beam is emitted;

Ir Laser

IR lasers, or infrared lasers Particles in the laser medium emit laser light under the action of stimulated radiation, the wavelength and energy of which depend on the medium type and excitation conditions.

IR laser vs fiber laser application scenario

  • Infrared lasers are mainly used in medical, communication, radar, environmental monitoring and other fields.
  • Fiber lasers are mainly used in materials processing, measurement, fiber optic communication, and other fields.
medical field
medical field

Infrared Lasers Application

Military and SecurityUsed for night surveillance, target detection, identification, and tracking, as well as precise ranging and targeting in harsh environments.
Optical CommunicationEmployed in wired and wireless data transmission, including signal transmission from IoT devices, and as the operating principle behind TV or air conditioner remote controls.
Material ProcessingUtilized in cutting, drilling, surface processing, welding, and melting various materials such as steel, glass, and plastics.
Machine Vision and MeasurementApplied in scanning, positioning, environmental terrain scanning, three-dimensional reconstruction, and similar tasks.
Medical FieldEmployed to treat skin diseases, muscle pain, arthritis, etc., promote blood circulation, enhance immunity, and relieve pain.
Scientific ResearchUsed for spectral analysis, optical imaging, optical communications, etc., providing high-precision, high-resolution spectral information.
Specific Mid-infrared ApplicationsUtilized in lidar, atmospheric communications, laser ranging, astronomical spectrometer calibration, molecular content detection, and molecular imaging, among others.
automobile industry

Fiber Lasers Application

Industrial ProcessingFiber lasers are high-efficiency industrial processing equipment used in manufacturing for cutting and welding metal and non-metal materials, such as steel, aluminum alloy, ceramics, etc. Used in semiconductor processing for cutting superhard materials and making micro-nano structures. Widely used in mechanical processing, automobile manufacturing, electronic manufacturing, aerospace, and other fields due to their high energy density, speed, quality, non-contact processing, and low cost.
CommunicationIn the communication field, fiber lasers are crucial for generating high-speed and high-quality laser signals, amplifying and modulating optical fiber signals. They are used to manufacture optical devices such as fiber amplifiers and fiber couplers, improving the transmission performance of optical communication systems.
Medical FieldFiber lasers are employed to treat various conditions, including skin diseases, cardiovascular disease, cancer, etc., by cutting diseased tissue and for laser treatment. The high energy density and collimation of fiber lasers allow for precise cutting and location treatment, offering less discomfort to patients and reducing the likelihood of sequelae.

Fiber Laser Advantages:

  • High Efficiency: Due to the fiber’s waveguiding properties, these lasers are highly efficient, converting a significant portion of the pump light into laser output.
  • Excellent Beam Quality: Fiber lasers can produce very high-quality beams, making them suitable for precision applications like cutting and welding thin materials.
  • Scalability: The power output of fiber lasers can be easily scaled by increasing the length of the doped fiber or using multiple fibers.
  • Durability and Reliability: They are known for their ruggedness and reliability, with no moving parts and excellent thermal management.

IR Laser Advantages:

  • Versatility: IR lasers can be designed to operate across a wide range of infrared wavelengths, making them versatile for various applications, including industrial cutting, medical surgeries, and military applications.
  • Power Output: Certain types of IR lasers, like CO2 lasers, can achieve very high power outputs, suitable for heavy-duty cutting and engraving tasks.
  • Material Processing: IR lasers are particularly effective for processing non-metallic materials and metals, offering flexibility in manufacturing and fabrication processes.
fiber laser cutting
fiber laser cutting

Differences Between Fiber Laser Vs Ir Laser

Wavelength range

  • The wavelength of infrared lasers is usually in the range of 0.75~1000 microns;
  • The wavelength of fiber lasers is usually in the range of 1 to 2 microns.

Output form

  • Infrared lasers mainly use free space output, but they can also be output through optical fibers;
  • Fiber lasers can only output through optical fibers and cannot perform free-space output.


  • Because fiber lasers use optical fibers for laser amplification and modulation, they usually have a high beam quality factor and a stable laser beam, and the emission power changes little;
  • Infrared lasers can be difficult to achieve high levels of single pulse energy and wavelength, and samples are often smaller.

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