Nonlinear generation in dispersion technique silicon nitride waveguides and resonators

Dr. Jose Chavez Boggio
Leibniz-Institut für Astrophysik Potsdam (AIP)

FBH seminar: 05.06.2015

Lange Nacht der Wissenschaften at FBH

Laboratory tours and hands-on experiments for all ages.

13.06.2015, 17:00-0:00 Uhr (in German)

Laser World of Photonics and CLEO Europe

Visit us at the joint booth Berlin-Brandenburg in hall B3, booth 359 and at the accompanying conference.

Trade fair and conference: 21.-25.06.2015, Munic

... translating ideas into innovation

Welcome to the Ferdinand-Braun-Institut, Leibniz-Institut fuer Hoechstfrequenztechnik!

hybrid-integrated diode laser modules for display technology

We research cutting-edge technologies in the fields of microwave technology and optoelectronics. For customers in industry and science we provide high-frequency devices and circuits for communication and sensor technology as well as high-power diode lasers for materials processing, laser technology, medical technology and high precision metrology.

As a competence center for III/V-compound semiconductors we operate industry-compatible and flexible clean room laboratories with 2"-4" gas phase epitaxy units and a 2"-4" process line.


Temperature induced degradation of (InAlGa)N-based UV-B LEDs

(InAlGa)N-based ultraviolet (UV) light-emitting diodes (LEDs) emitting in the UV-B spectral region (280 – 320 nm) are promising candidates for applications, such as UV curing, phototherapy, and plant-growth lighting. All these applications require UV sources which are long-term stable particularly with respect to the optical power and emission wavelength. However, the optical power of many state-of-the-art UV-B LEDs decreases rapidly over few hundred hours under constant current operation. To better understand this degradation behavior, FBH has started extended life-time tests by stressing UV-B LEDs at constant drive current and different temperatures. The devices have been developed in a joint effort between TU Berlin and the FBH and exhibit an emission wavelength around 308 nm.

FBH research: 20.05.2015

Effizienter in Kontakt bleiben

Funkantennen für die mobile Kommunikation gibt es reichlich. Bei zu vielen Nutzern gleichzeitig am gleichen Ort ist eine Antenne allerdings schnell überlastet. Das liegt in der Regel an den Verstärkern, welche die Informationen noch analog verarbeiten müssen. Im FBH-Projekt "Digitale Leistungsverstärker" werden nun kleinere, flexiblere und kompaktere Module für Verstärker entwickelt.

Press release: 12.05.2015 (in German)

Semiconductor lasers with resonant optical feedback reach intrinsic linewidths below 20 Hz

High-precision atomic clocks, atom-interferometry experiments for extremely accurate measurements of the fundamental constants, and coherent optical free-space communication protocols are prominent examples of application fields of narrow-linewidth laser sources.

FBH research: 07.05.2015

Millimeter-Wave MMIC Signal-Power Generation and Amplification

Signal power generation and amplification at W-band frequencies and beyond is key for various application areas, such as medical technology, non-destructive materials testing, radar, security, and space. To meet this increasing demand, FBH has developed and realized solid-state power amplifiers (SSPA) using its in-house high-speed InP transfer-substrate DHBT process with transit frequencies beyond 350 GHz. 

FBH research: 28.04.2015