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MOPA Laser Marking

The most popular way of achieving power scalability is the “MOPA” (Master Oscillator Power Amplifier) approach. The master oscillator produces a highly coherent beam, and an optical amplifier is used to increase the power of the beam while preserving its main properties. The master oscillator has no need to be powerful, and has no need to operate at high efficiency because the efficiency is determined mainly by the power amplifier. The combination of several laser amplifiers seeded by a common master oscillator is essential concept of the High Power Laser Energy Research Facility. A MOPA laser source is a great way to expand your marking capabilities and improve the quality of your marking results on certain plastics and metals. With a conventional fiber laser, markings on certain metals and plastics (especially if they are dark in color) can be less homogeneous and rich in contrast. The MOPA laser source is a great solution in these cases because it allows you to select pulse durations, which translates into a wider range of laser parameters and more marking options. As a result, the MOPA can mark plastics with higher-contrast and more legible results, mark (anodized) aluminum in black, and create reproducible colors on steel.

Advantages of MOPA lasers

Selectable pulse durations not only improve marking results on certain metals and plastics, but also provide more marking capabilities. With the MOPA laser, the pulse durations can be set to predefined values between 2 ~ 200 ns. Because it offers such a wide range of pulse durations, the MOPA is one of the most flexible lasers on the market. It can simulate the properties of conventional fiber lasers such as Nd:YAG or Nd:YVO4. You can also produce qualitatively equivalent markings with the MOPA laser partially faster than with the conventional fiber laser.

Using short pulses and lower pulse energy heat the material less, and the area of the heat affected zone is reduced. This results in more advantages and possibilities for laser marking metals and plastics:

  • Less burning/melting in the edge area of metal engravings
  • Less heat development during annealing markings on metal, which leads to a better corrosion behavior
  • Controlled melting of plastics
  • Less foaming with plastics
  • More homogeneous and sometimes higher-contrast markings on some plastics

The advantages of the conventional fiber laser sources remain unchanged:

  • maintenance-free
  • long service life
  • air-cooled
  • cost-effective
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How to Select a Laser

Are you looking for a laser that can mark metal with barcodes, logos and serial numbers? There are two different Laser types to meet your needs.

Fiber Laser Marking System:

Permanent marks of all kinds are required on many products today. Fiber lasers, because of their extremely long operational life, lack of required maintenance or alignment and relatively low cost are rapidly becoming the marking method of choice for industrial marking applications. As government regulations become more strict about disposal of traditional marking materials like ink and acid etching chemicals, companies are looking for ways to make their product marking easier and environmentally friendly.

 

The Advantages of Fiber Laser Marking

  • It does not affect the integrity of the part;
  • Produce a high-contrast permanent mark;
  • No maintenance needed;
  • Compatible with almost any Windows-based software;
  • Easy to use

CO2 Laser Marking System:

Non-contact CO2 laser marking is an excellent method of permanently marking your products. While traditional metal engraving removes part of the tool, changing the strength of the part, the laser mark is actually on top of the metal. Wherever the laser hits the metal marking spray, a reaction is created where the spray bonds to the metal, creating a permanent black mark. Whether you’re marking one part or a thousand, nothing compares to the fast and affordable marking that a CO2 laser system provides. The CO2 laser systems that work with the additional spray are also more versatile than our FiberMark system because they will work with wood, acrylic, leather and many more materials.

The Advantages of CO2 Laser Marking

  • Lowest cost of machinery for laser marking;
  • Produce a very high-contrast black mark (needs marking spray);
  • Work with more materials, woods, plastics,  leathers…
  • Does not change the tolerances of the tool because no material is removed;
  • Compatible with almost any Windows-based software;
  • Is exceptionally easy to use
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Laser Marking / Engraving Technology

Laser Marking, also known as ‘laser engraving’ or ‘laser etching,’ is a marking method which utilizes laser light to mark materials using a fine spot diameter ranging from 0.002′ to 0.01′. The laser marks with short pulses (30 nanoseconds), providing precise control, and negligible heat input to the part.

A fast and clean technology, laser marking is rapidly replacing older marking methods. A key factor in this widespread adoption is the exponential increase in the use of direct part marking to enable tracking and traceability across many industries, most notably medical device and automotive electronics manufacturing. Easy and flexible automation, improved environmental profile, and low cost of ownership add to the benefits of laser marking equipment or laser etching equipment.