Optoelectronics/Quantum Devices

Cost-efficient gas sensor system based on wavelength-tunable quantum dot VCSEL arrays

The aim of this Berlin-Polish project is to develop an innovative, cost-effective, highly precise and highly reliable spectroscopic system capable of detecting in-situ low water vapor concentrations for industrial applications.

In QD-Sense, innovative, low-cost, tunable and single-mode lasers and laser arrays based on the principle of vertical-cavity surface emitting lasers (VCSEL) using quantum dots (QDs) as active medium are produced on the Berlin side. In a departure from the classical VCSELs, an innovative monolithic high-contrast grating (MHCG) is used to define the emission wavelength of the lasers precisely and flexibly at the same time. The Polish partners are carrying out extensive design studies and optimizations and are accompanying the development of the basic structures with numerical and optical investigations. Prototypes of these novel lasers will be integrated into an industry-relevant system for the detection of water vapor on the Polish side in order to demonstrate the high application relevance of this bilateral research project.

In addition to this product-related innovation, a toolbox for the simulation and optimization of resonant, nanostructured light sources, such as lasers or single-photon sources, will be developed on the numerical side.

The project is part of the 5th call for proposals "Photonics, microelectronics and quantum technologies as key enabling technologies for the digital transformation, energy transition, smart mobility and life sciences" between Poland and Berlin-Brandenburg. It is co-financed by the European Union within the framework of the Programme for the Promotion of Research, Innovation and Technology (Pro FIT) and the National Centre for Research and Development (NCBR) in Poland.

Quick Info

AcronymQD Sense
Project startOktober 2021
Funding SourceEuropean Union (IBB Pro FIT)
National Centre for Research and Development (NCBR)
Funding ID
(Pro FIT)