Laser Material Processing

High Power Laser Bars and Diodes for Industrial Applications

Application - High Power Laser Bar for Industrial Applications

Opto Semiconductor laser bars and diodes are the centerpiece of most of today’s industrial laser systems. Whether direct material processing or optical pumping of fiber lasers, disc lasers or classical solid-state lasers, the laser bar or diode is the key component for the initial conversion of electrical energy into laser light.

Thus, the opto semiconductor plays the most important role for the performance, reliability, and the total system costs of modern laser systems. OSRAM Opto Semiconductors enables and advances the success of these systems with its innovative products and new developments: The opto semiconductor is key.

Key factors: $ / W


Production lines around the world benefit from diode-based laser systems, 24 hours a day, 7 days a week. Any maintenance or replacement of production equipment comes at the expense of productivity, and ensuring productivity through redundancy systems would further increase the cost. Therefore, long lifetimes and stable operation without spontaneous failures are key factors for the success of laser systems for material processing. With lifetimes of more than 30,000 hours OSRAM Opto Semiconductors laser bars enable systems with extraordinary lifetimes, allowing you to offer attractive and more competitive warranties to your customers.


The production tool laser light is delivered from a fiber. The most efficient system available today is the fibercoupled semiconductor laser system, and if highest beam quality is required often fiber lasers are chosen – an architecture based on fiber-coupled laser diodes as well. The cost effi ciency of fiber-coupled modules depends not only on the output power of the semiconductor material, but also on the emission characteristics of the diodes. The lower the divergence of a given emitter structure the higher the fiber coupling efficiency. Over the last decade OSRAM Opto Semiconductors has become a worldwide technology leader in the design of low fill factor laser bars with outstanding slow axis divergence. Our mini bars with a slow axis divergence of below 7° are tailored for efficient fiber coupling using a fast axis and a slox axis collimation only – complex and expensive optics have thus become dispensable. And our standard 10 mm bars make use of the same technology to help the light to pass to where it should: into the core of the optical fiber.


Whether long lifetimes or low divergences, precondition for an extraordinary performance of a semiconductor laser is the conversion efficiency of electrical energy into photons. The higher the efficiency, the less heat is generated: This helps to reduce cooling effort and system costs while achieving high lifetimes. On the other hand higher efficiencies offer you the chance to significantly increase the output power without changing your existing system design. If you decide to stay with the same output power and system design, the higher efficiency will reduce operating temperature and allow lower divergences and better lifetimes.
Whatever way you want to go, we are happy to support you with a wide portfolio of laser bars and single emitters that allow wall-plug efficiencies of 65 % and above. And you are invited to join us for the next step: the 70 % are already in reach.

The right choice

OSRAM Opto Semiconductors offers GaAs and GaN laser bars and diodes for optical pumping and direct material processing in industrial, medical and other existing or emerging applications like heating or IR illumination.

High-Power Single Emitters

  • SPL Ex with up to 25 emitter bar design for singulation into single emitters
  • Various emitter widths of 100 µm - 230 µm for easy fiber coupling available
  • Recommended optical output power up to 30 W, CW
  • Typical electro-optical efficiency of > 60 %
  • Available wavelengths: 915 nm, 976nm

Our single emitters are designed for pumping of fiber lasers and offer an optical output power of up to 30 W. A variety of available laser apertures are ideal for high coupling efficiencies into different core diameters of the optical fiber. Our bare chips (SPL E-series) are supplied as a specific laser bar and are designed for easy cleaving into single emitters by the customer.

High-Power CW Laser Bars

  • SPL BKxx-40-25-10B with 50% fill-factor
  • Designed for high-power direct diode lasers
  • Recommended optical output power up to 350 W, CW
  • Typical electro-optical efficiency of > 60 %
  • Available wavelengths: 940 nm, 980 nm, 1020 nm

Standard QCW/CW Laser Bars

  • SPL Bx
  • QCW bars with 808 nm up to 500 W
  • 50 % fill-factor bar with 808 nm for hair removal up to 100 W, CW
  • 30 % fill-factor bar 880 nm for pumping of DPSSL up to 90 W, CW

Blue Laser Bars / Single Emitters (chip on submount)

  • SPL BD45x laser bar up to 50 W, CW
  • PLPCOS 450x single emitter up to 5 W, CW
  • Typical wavelength 445 nm
  • Typical electro-optical efficiency of > 38 %