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  1. Ferdinand-Braun-Institut
  2. Research
  3. Photonics
  4. Chips - Laser & LEDs

Chips - Laser & LEDs

GaAs- & GaN-based optoelectronics

We design and realize customized diode lasers in the wavelength range from610 nm to 1200 nm based on gallium arsenide (GaAs) III-V semiconductor layer structures in our Optoelectronics Department. Our focus is on increasing their output power, efficiency, beam quality and reliability. FBH diode lasers are used in a wide range of applications, from materials processing, solid-state laser pumping, metrology, medicine, nonlinear optics, display technology and sensor technology to quantum technologies and space applications. Moreover, ur laser chiplets can be integrated onto various material platforms, so-called photonic integrated circuits (PICs).

Our focus for gallium nitride (GaN)-based diode lasers is currently on emission wavelengths from 390 nm to 460 nm. We are developing UV light-emitting diodes (LEDs) especially for the UVB and UVC spectral range. For the device packaging we use our well-established mounting and assembly technology.

A handle holds a circular semiconductor wafer plate engraved with narrow, parallel stripes in various patterns.

High-Brightness Diode Lasers

ridge-waveguide (RW) & tapered lasers
[Translate to English:] Hochleistungs-Breitstreifen

High-Power Broad-Area Lasers

BA lasers as single emitters & laser bars
Microscopic image of a narrow, serrated object with regularly arranged teeth. Below the teeth is a scale of 5.0 micrometers.

Frequency-Stabilized Diode Lasers

distributed Bragg reflector (DBR), distributed feeback (DFB) & monolithic extended cavity diode lasers (mECDL)
Three gold-colored components are arranged on a silver surface. The central component bears a black label with the words “Laser class 4”. There is a 1-cent coin in the background.

High-Brilliance Diode Lasers

tapered lasers with integrated DBR gratings deliver a high spectral brilliance
A tiny, rectangular component lies on the skin surface of a finger. The fingerprints are clearly visible and show the texture of the skin.

Tunable & Dual-Wavelength Diode Lasers

ypsilon (Y) & sampled-grating lasers
Several golden multi-section lasers with round openings.

Pulsed Diode Lasers

mode-coupled, gain-switched & Q-switched diode lasers
Three square, gold-colored metal pieces lie in a straight line on a neutral surface. Each piece has a hole in the middle and a thin, flat metal color that sticks out.

GaN Diode Lasers

ridge-waveguide (RW), distributed feedback (DFB) & external cavity diode lasers (ECDL)
A square, silver microchip design lies on a 1-cent coin. The chip has a notched shape in the center that makes its structure visible.

UV Light-Emitting Diodes (LED)

UVB & UVC LEDs