LDF series - mobile high power diode laser

The LDF platform - thinking into the future

With the LDF series Laserline is setting the benchmarks for high power diode lasers. Even devices with over 20kW laser power are set on sturdy castors allowing a single employee to move the laser to different locations for start-up in production – a unique benefit. All you need is electricity, water and an optical fiber – and the laser is ready for use at its new site. Thanks to permanent development of our proven active diode cooling technology the system family is optimized to multi-kilowatt power levels even at high beam qualities: 7 kW out of a 600 µm fiber at NA 0.1 in a compact system configuration at less than one square meter footprint.

A modular concept allows maximal flexibility

Whether power, cooling or system interfaces: The LDF series can be individually configured and adapted to changing requirements. The systems are available with internal or external cooling system as water/water or water/air version. With these Laserline chillers, perfectly aligned to the product line and fully integrated in the control system, high power lasers can now be operated permanently in production with a low footprint requirement. Through the internal networking of all system components malfunctions can be diagnosed in real-time and resolved immediately.

The new benchmark for power and functionality

With an electrical efficiency of up to 50 percent, the LDF series is also right up there at the top when it comes to technical efficiency. Its functionality leaves nothing to be desired: due to the mobile hot-plug operation unit, LDF lasers can be very flexibly monitored and controlled even from a distance. Connection areas and interfaces are easily accessible by an extractable hood. System components can easily be exchanged; in this way, production does not come to a halt.

The intelligent system control makes a difference

An industrial, latest-generation Ethernet network combines the system components and interfaces with the central control unit, which monitors the entire process in real time. An OPC-UA interface creates the prerequisites for a platform-independent, vertical and horizontal data communication. It enables the integration of lasers in modern system architectures. All information is available at any time: on the mobile control panel directly on the laser, via network connection in a control center, as well as over secured remote access.

The beam source of the LDF diode laser

The beam source contains several stacks of individual diode bars. The number of bars per stack and the total number of stacks depends on the laser output power and the required beam quality. Using a straightforward, patented technology, the beams of the diodes are overlaid to form a single laser beam that is coupled into an optical fiber.

In most cases, the modular structure of the laser head allows the system to be fitted with additional stacks if extra power is needed.

Stack Management

Laserline aims for maximum reliability in particular for the heart of each diode laser system: the individual laser diode. Very stringent criteria and specially developed test procedures, guarantee that only qualified laser diodes are used. Diode laser systems from Laserline operate for more than 30,000 hours, which is equivalent to 5 - 7 years of production, before diode laser elements may need replacing.

Should, despite all precautions, a spontaneous failure of a diode laser occur, Laserline’s pioneer electronic stack management system steps into action. Based on the redundancy concept and automatic system adjustment, faults can be compensated within a few minutes.

Technical advantages at the glance

  • Worldwide only mobile series up to 25 kW laser power
  • Modular: Optionally internal or external cooling system
  • Laserline water/water or water/air cooling systems
  • High electrical efficiency: up to 50 percent
  • Field-proven active diode cooling technology
  • Internal networking of all system components
  • Real-time diagnosis of malfunctions
  • Interfaces compatible with previous system generations

Highest quality in every respect

  • Hot-plug capable mobile operation panel
  • Remote operation via network access
  • Convinient laser data backup on USB stick
  • Maintenance-friendly due to sliding service hood
  • Robust system for over 30,000 hours of operation
  • Reliable and continious - also in multiple-shift operation
  • 5-year warranty for laser diodes

Optical specification

Max. output power7.000 W9.000 W15.000 W20.000 W25.000W
Beam quality30 mm.mrad40 mm.mrad60 mm.mrad100 mm.mrad200 mm.mrad
Other laser powers and process adapted beam qualities available
Fiber optic cables600 µm[NA 0,1]400 µm[NA 0,2]600 µm[NA 0.2]1.000 µm[NA 0.2]2,000 µm[NA 0.2]
Min. focus at f = 150 mm450 µm600 µm900 µm1.500 µm3.000 µm
Fiber length10m, 20m, 30m, 50m, 100m, other lengths on request
Performance stability< +/- 2% over 2 hours
wavelength range900 nm to 1,080 nm

Mechanical Specifications

VG62Weight ca. 600 kg, dimensions: 1,012 x 680 x 1,244 mm³ (length x width x height)
VG64Weight ca. 750 kg, dimensions: 1,012 x 680 x 1,599 mm³ (length x width x height)
VG66Weight ca. 800 kg, dimensions: 1,065 x 850 x 1,845 mm³ (length x width x height)