Diode Lasers

Overview

Our range of services

Fiber-coupled diode lasers are among the least expensive and most efficient beam sources for cw laser applications; they are widely used, for example, in the hardening, soldering and welding of metals. Fraunhofer ILT develops diode lasers for tailor-made optical systems that meet high requirements. With its own self-developed as well as commercial software tools, the institute models and optimizes complex laser systems. Direct diode lasers with kW optical output power are a cost-effective alternative to fiber lasers in cutting applications. The stabilized emission spectrum and beam quality of the diode laser can also be used to great advantage in pump applications for multi-kW fiber lasers or ultra-short pulse lasers. In addition to targeted beam shaping, the institute also focuses its R&D activities on developing fiber coupling and wavelength stabilization of diode lasers.

The range of services it offers includes R&D in the field of design and simulation, experimental investigations of laboratory samples, the development of industry-oriented, certified prototypes and comprehensive technology consulting as well as market and feasibility studies.

Cutting of stainless steel with direct diode laser.
© Fraunhofer ILT, Aachen, Germany.
Cutting of stainless steel with direct diode laser.
Pump diode laser modules with dense wavelength superposition.
© Fraunhofer ILT, Aachen, Germany.
Pump diode laser modules with dense wavelength superposition.
LIDAR-Demonstrator.
© Fraunhofer ILT, Aachen, Germany.
LIDAR-Demonstrator.

Characterization of High Power Diode Lasers

  • Near and far field patterns and spectral distribution
  • Wall plug efficiency and output power
  • Polarization
  • Emitter-resolved analysis of diode laser bars
  • “Smile" measurement and strain analysis

Spectral Design

  • External resonators (Fiber Bragg Gratings, Volume Gratings) for frequency stabilization
  • Dense wavelength multiplexing
  • Analysis of thermal wavelength shift
  • Design and manufacturing of Volume Gratings

High Power Diode Laser Systems

  • Beam shaping of single emitters and laser bars
  • Systems based on Broad Area Lasers, (DBR) Tapered Lasers, Ridge Lasers and Quantum Dot Lasers
  • Spatial multiplexing of single emitters for multimode fiber coupling
  • Beam transformation and multimode fiber coupling of laser bars
  • Fiber coupling of single mode emitters
  • Super-pulsed diode lasers
  • Algorithms for automated assembly of micro optics

Brochures

Our brochures offer a quick view onto our service portfolio. Find more detailed information in the “project results“ tab.

 

“Optics Design and Diode Lasers“

Markets

Laser technology can solve demanding tasks in many different industries. Whether as a tool in automotive production, as measuring equipment in the environmental sector, as a diagnostic or therapeutic instrument in medical technology or as a communication medium in space technology, the laser provides multiple uses with high productivity and high efficiency.

Read up about the innovations of the Fraunhofer ILT in a few selected industries and convince yourself!

 

Research with us!

Please do not hesitate to contact us if you have any questions about general topics! Our contact persons are happy to get in touch with you.