JK Lasers, laser manufacturer, offer innovative Fiber Laser products, leading software solutions, patented technology and an expert in-house applications team to deliver the right solution every time.

1. 2013
A GSI Group Company
Industrial Lasers Weld, Cut & Drill
Laser Cutting
A global developer and manufacturer of industrial lasers, JK Lasers provides
innovative laser processing solutions for the medical device, aerospace,
automotive, electronics and semiconductor industries. Drawing on over 40 years'
experience, we help customers select the most suitable lasers for their welding,
cutting and drilling requirements.
Laser
Fiber Lasers
Welding
Industrial
Laser Drilling
Laser
Laser
Manufacturer
JK Lasers
1/1/2013

2. JK Lasers - A GSI Group Company 2
About JK Lasers
A global developer and manufacturer of industrial lasers, JK Lasers provides innovative laser
processing solutions for the medical device, aerospace, automotive, electronics and semiconductor
industries. Drawing on over 40 years' experience, we help customers select the most suitable
lasers for their welding, cutting and drilling requirements.
Innovative Products
Our reliable, robust product range includes:
 JK™ Fiber Lasers;
 JK™ high-power solid state Nd:YAG CW and pulsed lasers;
 eCO2 economical low to mid-power CO2 lasers;
 Process Tools.
Software Solutions
We aim to deliver a single integrated solution comprising both hardware and software. With the
laser, beam delivery system, process tools and control unit all developed and produced by JK Lasers,
integration problems are eliminated.
Manufacturers have full control of their laser using the JK™ Laser Graphical User Interface - Laser
View™ SE or FiberView. Features include:
 Integrated process vision when used with CCTV equipped process tools;
 Windows-style help menu;
 Pulse stability measurement;
 Simple integration into work processing systems
Patented Technology
When welding or drilling, 80 - 90% of the laser’s light can be reflected onto the fibers, potentially
causing damage. Our patented back reflection technology allows the user to process highly reflective
materials at full power without back reflection harming the equipment or fiber optics.
Our unique Luminator™ technology channels reflect light away from the fibers via a capillary tube.

3. JK Lasers - A GSI Group Company 3
Table of Content
1. JK Lasers Spearheads £1.2m World-Class Research Project
2. JK Lasers Ships its First 1kW Fiber Laser
3 JK Lasers Opens New Offices in Germany
4 Hermetic Welds for Microwave Packages, Sensors and Relays
JK Lasers, part of the GSI Group, is to launch a £1.2m collaborative research and development
project in partnership with the LPA Group at Heriot-Watt University, PowerPhotonic Ltd. and
Cranfield University, thanks to investment from the Technology Strategy Board.
As lead partner in the High Efficiency Laser Processing Systems (HELPSYS) Project, GSI is aiming to
develop fibre coupled diode laser sources with beam qualities good enough to be applicable to a
broad range of mainstream applications. Specifically this will include a significant increase in the
efficiency of current laser welding processes to the point where they are more efficient than even
conventional MIG or other techniques.
Dr Mark Greenwood, Technical Director for JK Lasers, said: “Diode system beam quality has so far
limited the accessible market to niche applications such as soldering, plastic welding, hardening and
cladding. The significant beam quality improvements proposed by this project would enable diode
laser systems to enter many of the markets dominated by incumbent technologies such as High
Power CO2 and Lamp Pumped Nd:YAG lasers.”
Commenting on the Technology Strategy Board's investment in the project, their Technologist for
Electronics, Photonics and Electrical Systems, Mike Biddle, said: "The Technology Strategy Board
aims to stimulate the development and deployment of technologies which offer major business
opportunities for the UK. The advanced laser processing system that will be developed through this
project has the potential to be exploited globally. We are very pleased to have had the opportunity
to invest in this world class research and development."
Benefiting UK Industry
Laser processing, specifically laser cutting and laser welding, is widely used across many industries
including medical, automotive, electronics packaging and aerospace. The technology developed by
the HELPSYS project will be particularly relevant to high power applications in intensive production
environments where ultimate process efficacy and total efficiency are important – such as
automotive production, which requires significant quantities of high quality welds in large volumes.
In order to receive the investment, awarded under the Technology Strategy Board’s collaborative
research and development programme, the project partners must prove the UK’s capacity to
develop and exploit the technology, the size of the market opportunity and the commercial benefits
and sustainability of the proposed technology.

4. JK Lasers - A GSI Group Company 4
Dr Greenwood commented: “The actual benefits in terms of manufacturing costs and energy
efficiency achievable through exploitation of this technology will differ from case to case and this
will dictate the speed at which the technology penetrates these additional industries.”
He added: “We are confident that this project will directly benefit the laser and industrial processing
industry, by developing new technologies for high power diode lasers and their use in new high
efficiency laser welding processes, increasing the overall efficiency and achieving challenging cost
and volume manufacturing goals.”
Partnering for Innovation
In line with GSI’s tradition of utilising its applications expertise to further laser technology
innovation, the project will exploit this and the key technologies held by the project partners to
achieve new benchmarks for the development of industrial lasers.
For example, the project incorporates plans for base modules which will integrate new capabilities at
the diode laser chip level, innovative mounting and cooling configurations including new multi-layer
planar ceramic technology, utilisation of new beam correction technology, and novel multi-beam to
optical fibre coupling techniques.
Url: http://www.jklasers.com/jk-lasers-ships-its-first-1kw-fiber-laser
JK Lasers Ships its First 1kW Fiber Laser
JK Lasers has shipped the first of its newly launched 1kW fiber lasers. The JK1000FL is a highly
versatile industrial laser, offering many advantages over more traditional solid state lasers at this
power level.
For today’s critical manufacturing processes, these benefits include vastly improved energy
efficiency. The JK1000FL’s time-sharing capability maximises productivity by eliminating laborious
system load and unload times. This is particularly beneficial during the manufacture of large,
complex parts where high throughput is needed despite significant jigging and fit-up times.
In addition, its energy-sharing feature can help avoid the distortion of sensitive, high tolerance
components by simultaneously laser welding onto multiple locations on one part. Examples of this
include laser welding lids onto canisters and gears onto shafts.
The JK1000FL can also be used with JK Lasers’ bespoke, field-proven range of process tools, offering
‘plug and play’ capability and back reflection protection.
Dr Mark Richmond, Product Manager for JK Lasers, said: “The JK1000FL is an innovative fiber laser
that offers unrivalled levels of power and control for industrial applications.

5. JK Lasers - A GSI Group Company 5
“Its ability to help accelerate manufacturing processes without compromising quality is a highly
desirable feature in today’s competitive marketplace, which is why we have seen strong interest in
the JK1000FL from day one.”
The JK1000FL will be on display at Italy’s leading industrial laser exhibition between the 17 and 19 of
November 2011. Visit booth A14 (Padiglione 1) at EXPOLaser, Piacenza, Italy, to discover the many
ways that the JK1000FL and JK Lasers’ other products can enhance a wide range of industrial
processes.
Url: http://www.jklasers.com/jk-lasers-opens-new-offices-in-germany
JK Lasers Opens New Offices in Germany
JK Lasers, a global developer and manufacturer of industrial lasers, has opened new sales offices in
Germany as part of plans to grow the business.
The new sales offices, based in Munich and close to Hamburg, complement JK Lasers’ existing
support network. Providing specialist advice and technical support at a local level, the strategic
location of these premises will help JK Lasers serve other German-speaking countries.
Mark Greenwood, General Manager for JK Lasers, said: “JK Lasers plans to expand in Germany
because it represents an important market for us. The country accounts for a large percentage of the
worldwide photonics trade and is home to leading manufacturers who could benefit from our
products and services.”
JK Lasers, which is part of the GSI Group, offers a high performance range of Watt to kiloWatt fiber
lasers, Nd:YAG lasers and process tools, which are designed to operate 24 hours a day, seven days a
week.
A new range of powerful kiloWatt class fiber lasers will be added to the company’s portfolio later
this year. Easy to use, with next to no maintenance or set up times, JK Fiber Lasers can simplify the
most demanding laser welding, laser cutting and drilling requirements.
For more information, email sales@jklasers.com or call +44 (0)1788 517800.
http://www.jklasers.com/hermetic-welds-for-microwave-packages-sensors-and-relays
Hermetic Welds for Microwave Packages, Sensors and Relays
Lasers produce hermetic seals, preventing contaminants reaching sensitive circuits and trapping high
quality inert atmosphere inside the package.
Delivering very low heat, laser welds can be located close to polymer seals, glass-to-metal seals,
soldered components and electronic circuits.

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Microwave Packages
In many applications the alloy of choice for microwave packages is aluminum. It is easy to machine,
lightweight and possesses the necessary electrical and thermal properties.
A 4047 alloy lid is laser welded to a 6061-T6 alloy base with a butt, lap or fillet joint. The 12% silicon-
aluminum alloy 4047 can be fusion welded to the 6061 without cracking for a strong hermetic seal.
Unlike other electronic devices, the package around the active elements form part of the microwave
circuit. As most microwave circuits involve expensive radar or communication systems, very reliable
hermetic seals and high yields are needed.
The packaging must also be robust and capable of being opened and reworked when needed. For
rework, an end mill can machine through the laser weld. Once repaired, another lid can be welded
onto it. The number of repairs is virtually unlimited.
In some instances laser welding is required through the lid into the dividing labyrinth walls to isolate
certain parts of the circuit.
Pulsed Nd:YAG lasers are the best choice for microwave package sealing. Their high peak powers and
low heat input can handle all the different alloys and create a very stable process while maintaining
deep penetrations.
Fiber optic beam delivery is most common for these parts because of the consistent focus spot
size and top-hat energy distribution which helps with fillet and butt joints to fill any gaps. It also
achieves a good metallurgical mixing of alloys.
Laser Welding speeds are generally 150-300mm/min for aluminum alloys and up to five times faster
than those rates for iron alloys. If needed, weld penetrations of over 1.5mm are possible.
Relays
The mechanical contact connections used in relay units can be fouled by debris or create potentially
explosive sparks. To protect against this, hermetic seals are used in their production.
These units use glass-to-metal seals as feed-throughs that are very close to the seam. Too much heat
and the glass will crack. With low heat input, lasers successfully assemble the relay contacts using
spot welds, before hermetically sealing the header onto the can with a seam weld.
Stainless steels are typically used for the can, but other iron alloys can be used depending on their
magnetic properties. The header is often manufactured out of a cupro-nickel or Kovar material to
match the glass-to-metal seals.

7. JK Lasers - A GSI Group Company 7
The relay contact components can vary a great deal, depending on their electronic and wear
properties. Weld penetrations tend to be low (around 100μm - 250μm) to ensure minimal heat
input.
Pulsed Nd:YAG lasers produce the necessary pulse energy and discrete pulses for spot welding relay
components. They can also produce the seam weld around the header. For small packages a galvo
mirror system can be used to move the beam around the part.
Sensors
Sensors incorporate sensitive electrical and mechanical transducers that must be protected with
hermetic seals.
Integration of a laser into a sensor welding line is simple, with minimal control requirements, a
robust process window and virtually no consumables or adjustments required compared to micro-
tig, resistance welding or brazing.
Time-share multiplexing can direct the output from one laser to multiple workstations to make best
use of the laser system. The laser welding parameters can be changed faster than the 50msec
switching time between fibers. CCTVthrough-the-lens viewing can also be used to align and monitor
the laser beam.
For very high throughput and low heat input the CW and Super Modulated CW lasers produce the
highest welding rates at the lowest cost.
For very small devices where heat input is critical or where the alloys are more reflective (like
aluminium or gold plated parts) a pulsed Nd:YAG laser is often the best choice. It possesses the peak
power to process reflective materials and can weld to deep penetrations at low average power.