Custom Diode Lasers and UV LEDs – FBH Demonstrates Systems for LiDAR & SERDS

Pulse duration and intensity can be flexibly adjusted with this pulsed diode laser source. It is ideally suited, e.g., for LiDAR systems in the automotive sector. | FBH/

At Laser World of Photonics, FBH will present its capabilities in diode lasers and UV LEDs. It introduces compact live demonstrators for LiDAR and Raman spectroscopy. Results and advances in UV LEDs will be exhibited by FBH together with the spin-off UVphotonics.

The Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik (FBH) is showcasing its range of services at the Laser World of Photonics in Munich from June 24 – 27, 2019. At the joint Berlin-Brandenburg stand (booth B2.119), the institute will present current develop-ments, from chips and modules with and without fiber coupling to live demonstrators. At the accompanying CLEO conference (23. – 27.06.) FBH will be represented with 16 scientific contributions – read more.

LiDAR demonstrator: stand-alone, PC-controlled pulsed laser source

As part of the “Research Fab Microelectronics Germany”, FBH is presenting a live demon-strator for pulsed laser sources, which allows flexible adjustment of pulse duration and inten-sity. Visitors can use a tablet to change the desired parameters and monitor the results in real time on screen. With its PLS flex, FBH offers laser sources that deliver pulses in the range from 200 ps to 20 ns. The systems can be equipped with diode lasers of various wavelengths (630 – 1180 nm) and power ranges. Laser diodes, which are wavelength stabilized at 905 nm, achieve output powers of up to 100 W at ambient temperatures of up to 85 °C. This makes them ideally suited for use in LiDAR systems. FBH offers the chips in a complete de-velopment environment with driver electronics and control software.

SERDS turnkey system in use – for Raman spectroscopic measurements on site

The compact turnkey laser system for Raman measurements is equipped with a monolithic Y-dual-wavelength diode laser, which alternately emits light at two slightly different wave-lengths. The system allows very fast measurements using Shifted Excitation Raman Differ-ence Spectroscopy (SERDS). The spectral distance of both wavelengths can be adjusted via micro heaters above the DBR gratings, which define the wavelength. If the systems are complemented with a suitable power supply, spectrometer, data acquisition and software interface, they can be used for on-site measurements. In-house developed, portable systems have already been successfully used for measurements on food, soil, plants and human skin.