Ferdinand-Braun-Institut gGmbH

Booth number 4105-55


The FBH develops customized light sources from the NIR to the ultra-violet spectral range: high-power diode lasers with excellent beam quality, UV LEDs, and hybrid laser modules.

About us

The Ferdinand-Braun-Institut gGmbH (FBH) is an application-oriented research institute in the fields of high-frequency electronics, photonics and quantum physics. It researches electronic and optical components, modules and systems based on compound semiconductors. In the field of photonics, FBH develops light sources from the near-infrared to the ultra-violet spectral range: high-power diode lasers with excellent beam quality, UV light sources, and hybrid laser modules. Applications range from medical technology, high-precision metrology and sensors to optical communications in space and integrated quantum technology.

The FBH is a center of competence for III-V compound semiconductors covering the full range of capabilities, from design through fabrication to device characterization. The institute offers its international customer base tailored solutions and know-how as a one-stop agency – from design to ready-to-use modules and prototypes.

Ferdinand-Braun-Institut gGmbH
Gustav-Kirchhoff-Str. 4
12489 Berlin

Phone: +49 30 63922600
Internet: www.fbh-berlin.de

Products & Services

FBH presents its full range of capabilities in diode lasers and UV LEDs, each device optimized to fit the respective application. The institute develops customized light sources based on III-V semiconductors from the NIR to the ultraviolet spectral range. high-power diode lasers with excellent beam quality, UV light sources, and hybrid laser modules.

FBH competencies include:

  • high-power diode lasers: broad area & bars, e.g. for materials processing
  • high-brightness & narrowband diode lasers, e.g. for applications in medicine & biophotonics 
  • hybrid laser modules (cw & pulsed, tunable): from NIR to UV spectral range, e.g. for LiDAR, laser sensors, communications, space & satellite applications, integrated quantum technology … 
  • UVB, UVC & far-UVC LEDs, e.g. for sensors, disinfection, medical & production technology …

News & Innovations

Particularly robust & compact – monolithically-integrated Extended Cavity Diode Laser (mECDL)
The FBH presents ongoing research activities in transferring the hybrid micro-integrated concept of GaAs-based narrow-linewidth extended cavity diode lasers (ECDLs) onto a single chip. This novel monolithically-integrated ECDL – (mECDL) is based on an innovated 2-step growth process. The concept can be adopted to realize mECDLs at different wavelengths.

Ultra-narrow linewidth AlGaAs/GaAs-based mECDLs emitting at 1064 nm (for iodine spectroscopy) and 778 nm (for 2-photon rubidium spectroscopy) have already been successfully demonstrated. Monolithic integration increases the thermal and mechanical stability of the lasers and allows for cost-effective production of wafer-level lasers for space-borne applications of quantum photonics.
Further reading
Red DBR laser chips for strontium-based optical atomic clocks
Optical atomic clocks provide the most accurate time measurements available so far and have the potential to benefit basic research as well as improve satellite navigation. For strontium optical atomic clocks, we have developed red-emitting distributed Bragg reflector (DBR) lasers with emission wavelengths from 689 nm to 712 nm. The frequency stability with a record spectral linewidth of only 0.4 MHz makes the lasers suitable for laser cooling, repumping and excitation of the clock transition.

In DBR lasers, a ridge waveguide ensures lateral single-mode operation. Frequency stability and specificity of the emission frequency are enforced by a surface Bragg grating at one end of the laser diode. Incorporating the grating into the chip yields smaller and more compact lasers than comparable systems with external gratings, making DBR lasers ideal candidates for space applications of quantum optical sensors.
Compact fiber-coupled amplifier modules - from NIR to visible spectral range
The FBH has developed compact fiber-coupled amplifier modules delivering several hundred milliwatt CW output power through polarization-maintaining single-mode fibers. The semiconductor-based amplifier systems are optionally available with nonlinear crystals to achieve visible laser output emission through second harmonic generation. To provide the necessary seed power, any arbitrary fiber-coupled laser source can be used. From only 50 mW input power at 1122 nm, for example, more than 450 mW output power is achieved. With the integrated nonlinear crystal, more than 200 mW output power is provided at 561 nm under the same input power conditions, meeting the requirements, for example, of super-resolution microscopy. All variants share the same butterfly-type packages with a footprint of only 47 x 34 mm² and industrial standard fiber connectors. The concept is not limited to a specific wavelength, and amplified output emission at nearly any wavelength in the range between 630 nm and 1180 nm can be realized. Further reading

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