Ferdinand-Braun-Institut – Leibniz-Institut für Höchstfrequenztechnik

Booth number 4545-49


About us

The Ferdinand-Braun-Institut (FBH) researches electronic and optical components, modules and systems based on III-V compound semiconductors. These devices are key enablers that address the needs of today’s society in fields like communications, energy, health, and mobility. In its optoelectronic field of expertise, 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. The FBH covers 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.

Products and 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 from the NIR to the ultra-violet 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 and biophotonics
  • hybrid laser modules (cw & pulsed, tunable): from NIR to UV spectral range, e.g. for LiDAR, laser sensors, laser metrology, space …
  • nitride laser diodes for the blue & UV spectral range
  • short-wave UV LEDs, e.g. for sensors, disinfection, medical & production technology …
Stand-alone PC-controlled pulse laser source for LiDAR applications

The FBH offers flexible laser sources delivering 200 ps to 20 ns pulses. For automotive LiDAR, wavelength-stabilized laser diodes have been developed emitting 5 ns pulses with 40 W pulse power near 905 nm with good beam quality and up to 85°C. 3-emitter laser chips, whose emission can easily be optically combined into one single spot, yield up to 100 W. Chips can be delivered with FBH driver or as stand-alone PC-controlled laser source. Further wavelengths and power ranges are possible.

Further reading

Compact picosecond laser pulse source PLS 1030

The efficient all-in-one pulse laser system combines in-house developed optical and electronic semiconductor components, delivering ultra-short light pulses from 5-15 ps. It provides any desired repetition rate from the hertz to the MHz range; pulse peak performance reaches > 20 W output power. PLS 1030 is computer-operated and can thus be easily integrated into various laser systems. The PLS series allows integration of laser chips of any available wavelength from 630-1180 nm.

Further reading

Portable Shifted Excitation Raman Difference Spectroscopy (SERDS) – from chips to applications

For rapid SERDS measurements, FBH has demonstrated monolithic dual-wavelength diode lasers emitting light alternatingly on two slightly different wavelengths. These Y-branch DBR diode lasers with electrically controlled micro-heaters implemented above the gratings provide dual-wavelength laser emission and wavelength tuning over several nanometers. Supplemented with battery power supply, electronic measurement equipment and a software interface, the system can be used for in situ measurements.

Further reading

Ferdinand-Braun-Institut – Leibniz-Institut für Höchstfrequenztechnik
Gustav-Kirchhoff-Str. 4
12489 Berlin

Phone: +49 30 6392-2600
Fax: +49 30 6392-2602
Internet: www.fbh-berlin.com
E-mail: Send message

Contact person

Petra Immerz
Communications Manager
Phone: +49 30 6392-2626
E-mail: Send message

News & Innovations

Full value chain in UV LED technology
The FBH conducts R&D on (Ga,Al,In)N UV LEDs with customized wavelengths from 230 to 320 nm. Activities target high power conversion efficiency, reliability, and tailored spatial emission characteristics. FBH performs all stages of device fabrication in-house, from design to epitaxial growth through to processing. UV LEDs are available as bare chips or packaged LEDs (SMD/TO package), which are marketed by FBH’s spin-off UVphotonics. FBH has developed, e.g., 310 nm UVB LEDs with up to 30 mW output power at 350 mA and 265 nm UVC LEDs with > 25 mW at 350 mA. Also, the first fully packaged UVC LEDs worldwide with single emission peak at 233 nm and an output power of 0.3 mW at 100 mA have been demonstrated.

As a further step, FBH realizes complete turn-key modules, ready to use in applications which utilize both in-house and commercially available UV LEDs. These modules are tailored for the use in medical and biological environments, e. g., for water disinfection and plant growth lighting.
Further reading
Advances in high-power diode lasers
The FBH has a strong R&D focus on high-power diode lasers and will showcase its latest research results and broad performance progress in this rapidly advancing field. An overview will be presented by Prof. Tränkle, director of the FBH, in his plenary talk. The altogether 20 FBH conference contributions include performance progress for high-power diode laser bars tailored for current and future pump applications, based on studies performed in close collaboration with industry. Examples include improvements in the conversion efficiency of kilowatt-class 9xx nm bars and the first report of 300 W-class 670 nm bars. Comparable bars will be presented in our booth, both unmounted and mounted on kA-class heatsinks. In addition, studies are presented into direct diode coherent combining techniques using FBH tapered amplifiers that offer a path to power scaling in future industrial laser systems (cooperation academia). Amplifiers suitable for such combining are also presented on our booth.
Further reading
Laser systems for spaceborne quantum optical metrology
FBH develops particularly compact and stable laser systems designed for harsh environments that rely on the sophisticated in-house micro-integration technology. Since 2008, the institute closely cooperates with Humboldt-Universität zu Berlin within its Joint Lab Laser Metrology, developing the laser systems required for investigations into fundamental laws of physics with cold atoms as microscopic test masses under microgravity conditions. Several experiments yielded milestones accomplished in space, such as the first Bose-Einstein condensate or the first Iodine-based frequency reference. For the reference experiment, a new generation of laser modules was flown. It consisted of a laser emitting at 1064 nm that delivers an optical power of 570 mW within the linewidth of the free-running laser of 26 kHz (FWHM, 1 ms measurement time). The laser module is fully encapsulated into a 125 x 75 x 22.5 mm³ package, with optical output via a single-mode, polarization-maintaining fiber.
Further reading

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