Research News 2020

FBH research: 15.06.2020

Compact micro-integrated laser modules for the next generation of optical clocks

FBH has realized a compact micro-integrated laser module for a transportable, robust, and user-friendly optical clock to be operated outside specialized labs. The clock itself is based on the <sup>2</sup>S<sub>1/2-</sub> <sup>2</sup>D<sub>3/2</sub> transition of a single <sup>171</sup>Yb<sup>+</sup> ion at 436 nm.

FBH research: 30.03.2020

Optimized buried Bragg gratings for high-power DFB-BA lasers

High-power, highly efficient broad area diode lasers that are wavelength-stabilized by integrated Bragg gratings are in high demand for example for pumping narrow absorption bands in solid-state lasers. FBH has been conducting intensive research leading to continuous improvements of the institute’s DFB-BA lasers.

FBH research: 17.02.2020

Improved thermal management of InP high-power transistors

InP HBT technology is an ideal candidate for microwave applications in the terahertz range. The FBH uses a transfer substrate process to successfully suppress significant parasitic effects. For further improvements, an in-house diamond wafer bonding process was developed to enhance the thermal management of the wafer.