Sorry, your browser is not compatible with some of the content on this website. Please update to a newer browser to view this website.


20W – 200W
Pulsed Fiber Laser

Flexibility and speed for marking and pulsed micro-machining.


300W – 6kW
CW Fiber Lasers

A range of Lasers supplying power and control for numerous manufacturing applications.

Industrial Fiber Laser Range

redENERGY® and redPOWER® Fiber Lasers

At SPI lasers, we only manufacture, stock and sell fiber lasers, and we do this for a very specific reason. We believe that they are the most advantageous, efficient and cost-effective forms of laser process on the market, and there is plenty of data and supporting evidence to back this up.

We’ve covered a great deal of information on this page about all things fiber lasers, looking at the different types that we manufacture, the benefits that you’ll find from fiber lasers, the industries and applications that they are useful for, some visual demonstrations and even a brief look at the history of the fiber laser.

Please take some time to read through this page to learn everything that you’ll need to know about fiber lasers, or if you are looking for some quick answers to both basic and complicated questions, please see our FAQ page here.

Alternatively, please find our contact details at the bottom of this page.

Buying an SPI fiber laser

If you’re looking for more information on fiber lasers specifically, how they work, what their advantages are and everything else that makes a fiber laser tick, then read on.

First, we want to cover the range of products that we manufacture here at SPI Lasers, and what you can expect when buying a fiber laser from us.

Our fiber lasers will provide a cost-effective solution for your business

Our fiber lasers will provide a cost-effective solution for your business

Industrial Lasers

Our redENERGY® and redPOWER® Fiber Laser range comprises fused components, meaning the performance is not dependent on the alignment of rods and mirrors nor can dirt or dust ingress the resonator and deteriorate its properties. For manufacturers using our Lasers, this eliminates the need for time-consuming routine maintenance.

The absence of water-cooled pump chambers negates the risk of leaks that could cause the rods to fail, avoiding service costs. In addition, the use of a doped fiber as the gain medium in Fiber Lasers results in intrinsically stable beam quality, regardless of any heat load, with high brightness and even in fundamental mode, if designed accordingly.

Our Fiber Lasers can be supplied with patented Luminator™ fiber-delivery options, bespoke process tools and scanheads. These ensure safe and reliable 3D manipulation of the Laser beam and positive material processing results.

Our Fiber Laser range includes both rack-mountable and OEM units, offering both air and water cooled options, (mostly) depending on the respective output powers.


Drawing on over 40 years’ experience enables our range of Fiber Lasers to operate 24 hours a day, 7 days a week in the most demanding environments and industries across the globe.

Our fiber lasers are suitable for many environments and industries

Our fiber lasers are suitable for many environments and industries

User-friendly FiberView™ software ensures you get the most from your Laser. At the touch of a button, Laser parameters and pulse shapes can be programmed, processes can be monitored and data can be captured for analysis. A fast machine interface allows high speed triggering and activation of synchronised events.
Communication interfaces include RS232, USB and Ethernet.

As industrial Lasers operate continuously for long periods, high environmental performance is crucial. Our range of Lasers are designed to operate long term at ambient temperatures up to 40ºC and up to 95% RH humidity (20ºC).

All products are certified to European CE and US CDRH safety standards. Whilst an industrial Laser is not regarded as a complete machine on its own, all the necessary capabilities are built-in to allow the machine builder to meet national and international safety standards in a straightforward way. Electrical safety and electromagnetic compatibility standards are also met.

You will also find that we are a fully ISO9001 accredited organisation, which relates to quality management procedures and processes that have been put in place by a business.

Alongside this, we also have a UKAS management systems certification, which relates to a business’ ability to meet its customer demands with the processes that it has. With these two accreditations, you can be assured of the quality of all of the products that we manufacture.

We are an ISO9001 accredited organisation

We are an ISO9001 accredited organisation

Reliability and longevity are also important when considering an industrial Laser. All our Lasers are designed with high quality industrial components.   We make our own range of patented delivery fibres with inherent back reflection protection, preventing damage to both the fiber and resonator during processing.

Finally, our state-of-the-art applications laboratories are available to customers to ensure you find the best Laser and processing parameters to meet your application requirements.

You can also read more about the code of conduct that all SPI Lasers employees abide by when manufacturing our fiber lasers and working with customers.


Our Lasers use our own proprietary Fibers based on patented GTWave technology making our products unique and exclusive to us.

Our product portfolio is the result of our extensive experience of the industrial Laser materials processing sector, including long-term relationships with customers. It is based on a strong commitment to Research & Development and rigorous product development, addressing customers’ business and technology demands.

Regardless of whether you choose one of our range of redENERGY® nanosecond Pulsed Lasers or redPOWER® CW Fiber Lasers you will have the flexibility to control power and modulation rate.  In addition our redENERGY products offer even more flexibility allowing control of both pulse width and shape. When combined with tailored beam delivery and control features, our Fiber Lasers become the tool of choice for your industrial Laser applications.

For more information on our fiber lasers, please give our sales team a call on +44 (0) 1489 779 696 – option 1.

How fiber lasers work

There is some brief information listed above on the way in which fiber lasers work, but this is more specifically focused on how our fiber lasers work in particular. Here we wanted to give you a brief overview on how this handy piece of equipment works.

To keep it relatively short, a fiber laser uses an optical fiber as its active medium, which has been doped in rare earth elements, with the most common of these being erbium. These rare earth elements have high energy levels, resulting in a higher power output of the fiber laser.

Unlike other lasers, there is a refractive mirroring system inside the fiber laser core, so all of the activity that is conducted in order to create and emit the laser beam happens from inside the laser. This maximises efficiency in terms of power output. The heat levels of this activity is also evenly spread across the fiber laser, and with an efficient cooling system, the machine will never overheat either.

Finally, it also means that the laser beam that is emitted is able to be controlled to an extremely high degree of accuracy, allowing you to create a laser beam with a pin-point focus, perfect for working with tiny objects and parts. This is beneficial to so many industries, which we will discuss more below.

The advantages and benefits of fiber lasers

Now that you’ve been given a quick science lesson in the way in which a fiber laser actually works, we want to discuss how this translates into benefits and advantages offered.

All our Fiber Lasers benefit from a number of key product qualities that in turn have a direct impact on the performance of our customers products and organisations.

Greater flexibilityGreater flexibility
Our Fiber Laser range offer users greater flexibility based on an extended range of performance features. redPOWER CW HS Laser models benefit from higher modulation rates and closed loop operations, while redENERGY Pulsed EP Series Laser sources offer the greatest range of pulse width variability from 3-500ns with up to 1MHz operation and CW capability.

You’ll also find that flexibility comes in terms of the level of control that you’re offered as a user. The beam duration, length and intensity sits completely in your hands, allowing you to easily switch between several types of laser processes and applications to work with a huge number of materials. This also means that one fiber laser setup is capable of performing a range of different functions.

Superior qualitySuperior quality
All our products are designed, engineered and manufactured to be of the highest quality, resulting in Lasers with excellent levels of reliability. In addition our diverse feature suite allows greater control for enhanced processing results.

You can expect high quality from our fiber lasers

You can expect high quality from our fiber lasers

Increased productivityIncreased productivity
Our broad product range enables sources to be tailored to specific applications through optimised beam quality by choice of delivery fiber in redPOWER CW Lasers and choice of M2 in redENERGY pulsed. In addition, in our redENERGY Lasers the optimisation of pulse duration and frequency can often enhance productivity.

Improved profitabilityImproved profitability
Whether you are an integrator or end user, our objective is to help our customers be more successful. Our Lasers are compact, easy to integrate and available at levels of integration to suit customer requirements. Compared with other solid state Lasers, Fiber Lasers offer greater efficiency and reliability; low running costs and virtually no on-going maintenance. Coupled with enhanced process performance our Lasers can help deliver enhanced profit.


Fiber lasers are able to work with a huge range of materials, including plastic, , various metals, polymers, ceramics, glass, gemstones, silicon and plenty more. Fiber lasers are also great at working in numerous environments, including harsh and inhospitable ones where other machines would degrade.


One of the biggest strengths of a fiber laser’s adaptability is the wide ranging number of processes that it can complete:

You can read more on each of these processes at the very bottom of this page.

Laser cutting in action

Laser cutting in action

The benefits of fiber lasers as compared to other laser processes

While we covered the benefits of fiber lasers, and our own fiber lasers in particular, in the section above, you may be asking why you should choose fiber lasers over the other types of lasers on the market.

For a more in-depth review, please read our comparison guide, but we want to highlight the main points here:

  • Fiber lasers have no moving parts, meaning you don’t need to worry about knocking them out of alignment (which means more servicing times and costs)
  • Following from this, fiber lasers have lower maintenance costs and much longer service lives
  • They are much more electrically efficient, delivering a higher power output at a fraction of the electrical cost
  • Pulsed Fiber Lasers are particularly good at working with thin materials, whereas CW Fiber Lasers are great at working with thicker metals
  • They are also the best type of laser on the market at working with reflective metals

Other lasers, with gas lasers being the most common, do have their benefits too, but fiber lasers are the newest type of process on the market, and so have come with the latest developments and innovations. This has all resulted in a high number of advantages.

Fiber laser applications

We covered above the different laser processes that our lasers are capable of performing, so here we want to touch upon some of the applications that these processes can be used for.

Use on reflective metals

This is an important one, as many industries use reflective metals such as aluminium. Our Fiber lasers are brilliant at working with these metals as they have been designed to avoid the reflective nature of the metal damaging the laser.

Scientific research

Fiber lasers have found heavy use in the field of science, both for the creation of tools and equipment, and also for furthering scientific research. Advancements have been made in fields such as spectroscopy, and scientists even predict that fiber lasers will help us build sustainable bases on Mars one day!

Creating electronic devices

Fiber lasers are heavily used in the electronics, batteries and semi-conductor industries, all industries which contribute to the dozens of pieces of electrical equipment that we use every single day. Fiber lasers are great at working with small objects without causing any heat damage to the surrounding area, making them the go-to choice for these industries.

For a much longer list of interesting, useful and sometimes surprising applications, please read more here.

Industries which use fiber lasers

We’ve touched on this briefly above in various places, but here we want to give you a quick overview of the industries which most heavily use fiber lasers:

There are many other industries and places in which you will find fiber lasers being used, but these are the main sectors that we service. The reason that you will find fiber lasers being used in such a wide-ranging number of industries is because of the benefits and advantages that we touched on above.

The fact that the user is able to have total control over beam duration, length and intensity, that one single setup can be used for multiple processes, that so many materials can be worked with and that it’s the most cost-effective laser on the market makes it so attractive.

You can read more on each of the specific industries by following the clickable links at the bottom of this page.

The history of fiber lasers

History fanatic? If you’re interested in lasers and how fiber lasers have started to dominate the market over the last few years, then this section is for you. Fiber lasers have a history dating back to the 1960s, but it’s only been in the last 20 years or so that they’ve really come along in leaps and bounds.

They’ve been developed and improved upon consistently, with the level of power output that they are able to achieve increasing almost year on year. To read more on the history of fiber lasers, please follow this section here.

Fiber lasers in action

We understand that there’s been quite a lot of content on this page! So, to break things up and give you some visual demonstrations, we’ve put together a page with five great YouTube videos that we’ve found that involve fiber lasers.

However, we want to include one on this page too; we couldn’t help including one from our very own YouTube channel! Below you will see our fiber lasers working with reflective metals in order to create a small replica of Tower Bridge, which has come out rather well if we don’t mind saying so!

Find out more about fiber lasers from SPI Lasers

We hope that the extensive section above has helped to give you an in-depth overview of fiber lasers. If you are still looking for more information or have some questions that you would like answered, then please don’t hesitate to get in contact with us at the following address:

  • SPI Lasers UK Ltd
  • 6 Wellington Park
  • Tollbar Way, Hedge End
  • Southampton, SO30 2QU
  • United Kingdom

Alternatively, please find our other global contact details listed here.


Image credit: Negative Space, alexanderbeck, OpenClipart-Vectors, geralt and matthew venn