Department "Photonic Sensor Technology"

The Department of Photonic Sensor Technology deals with a variety of physico-chemical, mostly light-based, analysis techniques in science, environment, and industry. Using optical methods, being inherently fast and non-invasive, measurement data can be recorded quickly, contact-free, and thus non-destructive. For this reason, optical methods are already the basis for analytical investigations in research laboratories in chemistry, medicine, materials science, engineering, and biotechnology.
The department sees thus a central challenge in further developing and implementing optical analysis techniques in industrial processes and applications outside of research laboratories.


Numerous problems are so complex that they cannot be answered on the basis of a single optical technique. The Photonic Sensor Technology department therefore develops system solutions that consist of a combination of different optical techniques or a combination of optical techniques with other technologies. Thus, the photonic sensor technology department relies on the development of novel optical measurement methods, mainly based on:

  • Raman spectroscopy
  • IR-absorption spectroscopy
  • Fluorescence

In addition, the department has expertise in a complementary method, the ion mobility spectrometry (IMS), which can also be used in, e.g., trace analysis. Moreover, the department explores the possibility of integrated systems. The studies may include thereby following steps:

  • Sample pretreatment (separation, enrichment)
  • Detection by means of different (optical) sensors
  • Data processing (chemometric data analysis, sensor data fusion).


This enables the Photonic Sensor Technology department to manage complex processes and to develop systems that combine different analytical methods. The main challenges that are thereby tackled are measurement speed, selectivity, and sensitivity.


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Laser-Laboratorium Göttingen e.V. (LLG)

Contact person:

Head of Department
Dr. Hainer Wackerbarth
"Photonic Sensor Technologies"

Tel.: +49(0)551/5035-58
FAX: +49(0)551/5035-99