Lasers for the Automotive Industry

Lasers for Automotive Manufacturing

Lasers Enabling Smart Vehicle Development

Whether it’s materials processing of metals, polymers, wood, fabric, display production or microelectronics fabrication, Coherent lasers deliver superior results in processes that are often difficult or impossible to accomplish using other technologies.

Coherent fiber lasers precision weld aluminum battery casings to yield greener vehicles and offer spatter-free welding of body panels. Our ultrafast industrial lasers produce micron-level accuracy in fuel injector nozzles for improved energy efficiency. Our excimer lasers anneal the ubiquitous flat panel displays in dashboards, and our sophisticated 3D marking systems provide higher quality graphics for better user interfaces and improved controls.


laser welding of auto body

Laser Welding of Auto Body and Tailored Blanks

With flexible fiber optics and in combination with robots, fiber lasers are an ideal tool for highly automated automotive welding, regardless of the material and its thickness. With our new smart process monitoring option, you can optimize the welding process and increase yield.

For this application, we recommend: HighLight FL Series with SQD, HighLight FL-ARM


automotive laser welding

Zero-Gap Welding of Hot Dipped Zn-Coated Steel

CleanWeld technology enables high-quality zero-gap overlap welding without blowouts, thus opening new opportunities in production.

For this application, we recommend: HighLight FL-ARM


aluminum fillet welding

Aluminum Fillet Welding

Our new CleanWeld technology enables fillet welding without the use of fillet wire while at the same time preventing cracking and minimizing spatter. The weld depth can be adjusted while keeping weld width constant.

For this application, we recommend: HighLight FL Series, HighLight FL-ARM


automotive laser cutting

Laser Cutting of Auto Body Components

Fiber lasers with real-time smart process monitoring increase yield, reduce scrap and rework, and lower cost for production of auto body components.

For this application, we recommend: HighLight FL Series with SQD


automotive laser scanner welding

Dynamic Beam Welding / Scanner Welding of Auto Body Parts

Multi-spot dynamic welds of any geometry can be generated at high speed over a very large workspace. The excellent beam quality of our fiber lasers with CleanWeld technology enables remote welding with standard scanners.

For this application, we recommend: HighLight FL Series with SQD, HighLight FL-ARM


automotive laser ablation

Laser Ablation of Metallic Coatings of Tailored Blanks

Pulsed fiber lasers remove the protective aluminum-silicon coating of tailored blanks to ensure a high-quality weld.

For this application, we recommend: HighLight FL1000P


automotive laser brazing

Laser Brazing of Automobile Doors and Roofs

A laser brazed joint at the door or roofline is seamless, high-strength, paintable and waterproof with no requirements for post-processing prior to finish.

For this application, we recommend: HighLight DL4000HPR or DL6000HP

hairpin welding

Spot Welding of Copper Conductors for Electric Motors - Hairpin Welding

With scanner and fiber laser, the laser beam can be positioned from weld-to-weld within milliseconds. Due to the high absorption into highly reflective materials such as copper, the fiber laser is the right tool for this application. Another advantage of laser welding with the fiber laser is the low heat input, which prevents assembly damage.

For this application, we recommend: HighLight FL Series


battery welding

Battery: Separator & Electrode Cutting

Roll-based components for electrodes and separators can be cut by laser instead of conventional die punching without the tooling wear and replacement cost.

For this application, we recommend: HighLight FL Series


laser welding of battery pouch

Contacting the Cell Arresters

For the packaging of the pouch cell, the contact of the arrester foils (anode – copper and cathode – aluminum) is laser-welded to reduce spatter and other deposits.

For this application, we recommend: HighLight FL Series, HighLight FL-ARM


laser welding of battery housing

Laser Welding of Battery Housing

Battery housings, safety valves, and contacts are laser-welded with minimal thermal input regardless of the material (Cu-Cu, Al-Al, or Cu-Al)

For this application, we recommend: HighLight FL Series, HighLight FL-ARM, StarFiber


datamatrix code marking

Traceability of Components

Lasers enable permanent, abrasion-resistant datamatrix marks for traceability of critical parts.

For this application, we recommend: PowerLine Rapid NX, CombiLine Advanced XL


automotive laser cleaning

Functional Surfaces - Cleaning, Preparing, Activating

Laser cleaning improves the adhesion of lacquers to battery surfaces, and prepares various components for bonding or welding.

For this application, we recommend: HighLight FL Series, PowerLine F, PowerLine Pico


laser welding of busbar

Welding of Busbar

Fast welding of busbars with different battery cells can be accomplished with a fiber laser and a 2D scanner.

For this application, we recommend: HighLight FL Series, HighLight FL-ARM

automotive laser welding

Laser Welding of High-Precision Parts like Gears and Powertrain Components

The new CleanWeld technology reduces spatter by 80% and enables the smallest weld seams. The low heat affected zone also protects the components from distortion. This technology is ideally suited for high-precision parts.

For this application, we recommend: HighLight FL Series, HighLight FL-ARM


automotive laser welding

Laser Welding of Gears and Powertrain Components with Gap Bridging

The innovative CleanWeld technology enables gap bridging of up to 0.3 mm without filler wire. The weld process remains smooth without spatter or pores.

For this application, we recommend: HighLight FL Series, HighLight FL-ARM


laser hardening of automotive components

Hardening of Gears and Powertrain Components

For applications such as hardening or heat treatment we recommend using a combination of a high-power diode laser with a special zoom or custom optic. Pyrometer process monitoring helps prevent local melting of the surface.

For this application, we recommend: HighLight DL Series with zoom optics or customized line beam optics

automotive glass cutting

Laser Cutting of Glass Mirrors

SmartCleave: zero-gap cutting of 2D and 3D automotive mirrors with high edge quality and high speed.

For this application, we recommend: Monaco, HyperRapid NX, StarShape 300/450/650P, StarShape 100/250 C/P


automotive glass cutting

Laser Cutting of Glass Displays

SmartCleave: zero-gap cutting of 2D and 3D cover glass for automotive displays with high edge quality and high speed.

For this application, we recommend: Monaco, HyperRapid NX, StarShape 300/450/650P, StarShape 100/250 C/P


automotive laser welding

Laser Welding of Sensors

High-power fiber lasers are used to weld the steel ABS brake sensors. Lasers are also used for welding pressure sensors, force sensors, and air-bag sensors.

For this application, we recommend: HighLight FL Series


automotive laser welding

Laser Welding of Exhaust System Components

Heat exchanger tubes made of stainless steel are welded with laser scanner solutions in combination with our high-power fiber lasers. Fiber lasers can also weld stainless steel exhaust couplings and sleeves.

For this application, we recommend: HighLight FL Series


automotive laser welding

Laser Welding of SCR Injectors

Fiber lasers weld Selective Catalytic Reduction (SCR) injectors with high quality and accuracy.

For this application, we recommend: HighLight FL Series


automotive laser welding

Welding of Safety Belt Tensioner

The two parts of the belt tensioner are welded reliably and economically with CO2 lasers.

For this application, we recommend: DC Series


automotive laser welding

Welding of Fuel Filters

Fiber lasers are an ideal choice for welding aluminum fuel filters. The 1 µm wavelength is much better absorbed by reflective materials such as aluminum, copper, and brass compared to the 10 µm CO2 lasers.

For this application, we recommend: HighLight FL Series


automotive laser welding

Fine Welding (Spot and Seam Welding)

Spot and seam welding with lasers are mainly used for small mechanical and electromechanical components, such as spark plug connectors and power electronics, sensors, and airbag detonators.

For this application, we recommend: StarFiber


automotive laser welding

Laser Welding of Polymers

Polymer laser welding can be accomplished with minimal heat input and results in perfectly finished surfaces. In addition, sensitive components such as sensors can be hermetically sealed. One of the principal applications for thermoplastics laser welding is car key production.

For this application, we recommend: MPS Laser machine for laser welding of plastic


automotive laser cutting

Laser Cutting of Airbags

Airbag fabric is laser cut at high speed and simultaneously fused at the edges to prevent the fibers from fraying.

For this application, we recommend: DC Series


automotive laser marking

Day & Night Marking

Day & night laser marking of plastic parts is widely used in the automotive industry and consumer electronics. Due to its great flexibility and the low production cost, laser day & night marking has almost completely replaced two-component injection molding.

For this application, we recommend: PowerLine F


automotive laser marking

Label Marking

When conventional labels are required for serial numbers and barcodes, laser marking is ideal because both the contents and label shapes are freely programmable. After marking, the labels are cut-out without damaging the carrier foil.

For this application, we recommend: Label Maker Advanced


automotive laser cutting

3D Marking for Exterior and Interior Lighting Design

Lasers are widely used for marking LED diffusers for front and rear lights or decorative interior lighting design.

For this application, we recommend: PowerLine E, PowerLine Pico


automotive laser cutting

Laser Cutting of Hydroformed Parts

Laser cutting of hydroformed parts provides the flexibility and speed required to keep the assembly line at maximum capacity.

For this application, we recommend: HighLight FL Series


automotive laser cutting

Laser Cutting of Composite Material

Lasers enable fast, flexible, and exact cutting of apertures and holes, as well as perforations of profiles and laminates for door linings, coverings, and ceilings.

For this application, we recommend: StarShape 300/400/650P , StarShape 100/250 C/P, HighLight FL Series, DC Series


automotive laser cutting

Laser Cutting of Wood

Flexible wooden covers for the luxury car segment are cut efficiently with CO2 lasers.

For this application, we recommend: DC Series

Please Read Before Continuing

Risk factors: Except for the historical information contained here, many of the matters discussed in this Web site are forward-looking statements, based on expectations at the time they were made, that involve risks and uncertainties that could cause our results to differ materially from those expressed or implied by such statements. These risks are detailed in the “Factors That May Affect Future Results” section of our latest 10-K or 10-Q filing. Coherent assumes no obligation to update these forward-looking statements.


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