Research

We explore how to reach and even exceed the shot noise limit in laser sensors by preparing special quantum mechanical states (squeezed light). We also explore how dynamic near-field apertures can be used to realize high-resolution microscopy on surfaces beyond the diffraction limit, or how to interferometrically measure vibrations in the gigahertz range with defined uncertainty for the vibration amplitudes. Further research topics address the suppression of environmental influences on the noise of interferometric sensors, interferometric strain sensors, photoacoustic tomography or the realization of inexpensive compact interferometric sensors with polymer waveguides and phase-locked lasers.

In addition to laser sensors, we are researching camera-based sensors, e.g. for measuring temperature distributions on the molten pool surface during welding, detection of shape changes during tensile tests using interferometric methods, or detection of pupil oscillations in the eye for attention recognition in human-machine collaboration.

Further topics result from cooperation opportunities in all fields of sensor technology. For example, we are researching radio sensors for intelligent fire protection technology.

 

Optical Metrology

AeroQGrav (Absolute Aero Quantengravimetrie)
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AeroQGrav (Absolute Aero Quantengravimetrie)

Kristina Tolchkova, M.Sc.

Dr. -Ing. Fangjian Wang

Eye-safe Squeezed-Light-Enhanced Scanning Heterodyne Mach-Zehnder LDV
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Eye-safe Squeezed-Light-Enhanced Scanning Heterodyne Mach-Zehnder LDV

Mengwei Yu, M.Sc.

Development of airborne laser Doppler vibrometry for improved dynamic characterization of large engineering structures
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Development of airborne laser Doppler vibrometry for improved dynamic characterization of large engineering structures

Aparajita Talukder, M.Sc.

Dr. -Ing. Fangjian Wang

High-precision measurement of non-stoichiometry and chemical expansion of thin praseodymium-Cer mixed oxide films at high temperatures
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High-precision measurement of non-stoichiometry and chemical expansion of thin praseodymium-Cer mixed oxide films at high temperatures

Mohammadrasoul Alizadeh, M.Sc.

Squeezed Light at visible wavelength for eye-safe high-spatial-resolution surface microscopy
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Squeezed Light at visible wavelength for eye-safe high-spatial-resolution surface microscopy

Lei Xiong, M.Sc.

KEIKO
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KEIKO

Dr.-Ing. Andreas Richter

Niels-Ole Rohweder M.Sc.

Contactless Interferometric Strain measurement

Contactless Interferometric Strain measurement

Dr.-Ing. Fangjian Wang

Metrological investigation of arc welding

Metrological investigation of arc welding

Dr.-Ing. Andreas Richter

Micro- and Nanoscopy Systems

Micro- and Nanoscopy Systems

Jingrun Zhang, M.Sc.

Optical EEG for Man-Machine-Interfaces
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Optical EEG for Man-Machine-Interfaces

Niels-Ole Rohweder, M.Sc.

Treatment of Optical Turbulence in Outdoor Laser-Doppler-Vibrometry
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Treatment of Optical Turbulence in Outdoor Laser-Doppler-Vibrometry

Kristina Tolchkova, M.Sc.

General topics of Sensor Technology

  • Industry 4.0
  • Cyber Physical Systems

Completed research projects

Completed research projects
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Completed research projects