Physikalisch-Technische Bundesanstalt

Tasks

Dissemination of radiometric units for laser radiometry in the wavelength range between 193 nm and 10.6 µm

Research and development for detectors for laser radiometry as primary, secondary and transfer standards

Research and development on single photon sources and characterization of single photon detectors

Fields of work

• Laser radiometry for small, medium and high power
  Standard detectors and lasers for the measurement of laser power from 0.1 mW to 1.5 kW, laser energy from 10 mJ to 2 J are available fort he wavelength range between 193 nm and 10.6 µm.
  
  
• Laser radiometry for the optical telecommunication
  Standard detectors and lasers for the measurement of laser power within the spectral range of telecommunication systems. Spectral correction factors and spectral responsivities in free-space and fibre-coupled operation. Calibration in the power range from 10 µW to 5 mW.
  
  
• Development and characterization of standard detectors for the ultraviolet, visible and infrared spectral range
  Development and characterization of standard detectors with small uncertainty and small sensitivity with respect to external perturbations.
  
  
• Single photon sources and detectors
  Investigation of single photon sources for radiometric quantum standards, investigation of the quantum-mechanical properties of single photon sources, characterization of single photon detectors.

Projects

• EUROMET: Project "Radiant Power of High Power Lasers – Part 1 (EUROMET.PR-S2)", Final report
  
  
• Intercomparison: Optical telecommunication 2009/2010, Final report (in German only)
  
  
• EUROMET Major Investment 10020 "Facility for high power laser radiometry"
  
  
• Measurement of laser power of high power diode lasers (up to 250 W) and their traceability between industry and PTB (2006 – 2008)
  
  
• "Candela: Towards quantum-based photon standards", EURAMET Joint Research Project within the frame of the European Community’s Seventh Framework Programme, ERA-NET Plus, under Grant Agreement No. 217257, http://www.quantumcandela.org/index.html
  
  
• "Quantum mechanical and tomographic characterization of single photon sources fort he application in cryptography and quantum communication" within the frame of the joint project "Efficient, compact and controllable single photon sources for quantum communication" (www.ephquam.de)
  
  
• "Metrology for Industrial Quantum Communication Technologies", EURAMET Joint Research Project within the frame of the European Community’s Seventh Framework Programme, ERA-NET Plus, under Grant Agreement No. 912/2009/EC (www.miqc.org)
  
  
• "Forschungskooperation auf dem Gebiet der Hochleistungslaserradiometrie" (2012-2013)

Contact

Head of Working Group		Hon.-Prof. Dr. Stefan Kück Phone: +49 (0) 531 592-4500 E-mail: Stefan Kueck
Address		Physikalisch-Technische Bundesanstalt Arbeitsgruppe 4.54 Bundesallee 100 38116 Braunschweig Germany