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Laser Components has introduced the SUR500 avalanche photodiode for biomedical applications in which the smallest signals in the short-wave UV/blue spectral range have to be detected.

Its high sensitivity and low noise makes the detector suitable for measurements in photometry or in analytical systems as well as for fluorescence measurements.

The photodiode can also be used for measurements in the entire wavelength range between 200nm and 1,000nm.

Performance wise, at 400nm the detector has a noise equivalent power of typically only 9fW/sqrt(Hz) at a sensitivity of about 28A/W. Such values can only be achieved with a reach-through structure developed by Laser Components.

Further information

  • The SUR series is available with an active diameter of 500μm.
  • Low-noise versions at 1.5mm and 3mm will be available soon.
  • TO housings optimised specifically for the UV range are hermetically sealed and compact.

Laser Components

The Laser Components Group was formed in 1986 and is located at six locations in Germany, France, UK, Canada and USA, employing more than 120 people worldwide. In-house production accounts for approximately half its turnover, with partner suppliers accounting for all other business.

Laser Components manufactures and supplies components, OEM modules, sources, optics and detectors, spanning the UV to the FIR. 

Products include:  

  • Photodiodes, including avalanche photodiodes, position sensitive detectors and PIN diodes
  • IR components, including IR detectors, IR emitters and optical components for IR
  • Single photon-counting modules, including accessories and silicon avalanche photodiodes for photon counting
  • Lasers, including laser diodes, laser modules and emitters for telecommunication
  • Measurement devices, including amplifiers, laser power detectors, and measurement instruments
  • Fibre optics, including optical fibres, assembled fibres, active and passive components and accessories
  • Optics, including laser optics, optical filters, optomechanical components, optical components and polarisers
  • Laser accessories, including laser safety products and spare parts and accessories
  • E-beam (physical vapour deposition) ion-assisted deposition and sputtering coating capabilities to the standard catalogue or customer-specific specifications.  

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