The SPC-150NX single photon counting card from Becker and Hickl (B&H) is the highest resolution time correlated single photon counting (TCSPC) card available, offering unsurpassed electrical timing resolution down to 3.3ps full width at half maximum (FWHM) / 1.6ps root mean square (RMS).

With time channel width down to 407fs, the high timing resolution makes the SPC-150NX ideally suited for use with ultra-fast detectors, such as B&Hs new HPM-100-06/07 ultra-fast hybrid detector or superconducting single photon detectors. B&H recently demonstrated use of their SPC-150NX in combination with SCONTEL's NbN Detector to deliver an instrument response function (IRF) with a FWHM of 17.8ps and in combination with the ultra-fast HPM-100-06/07 hybrid detectors and IRF of <20ps. 

The SPC-150NX card features a dual memory architecture for unlimited sequential recording of decay curves in memory and is supplied with the 64 bit single photon counting module (SPCM) Windows control software which enables a large amount of memory to be addressed.

The SPC-150NX features the high-speed interface for laser scanning microscopes. It is the module supplied with all B&H's fluorescence lifetime imaging (FLIM) systems so FLIM data can be recorded with unprecedented numbers of pixels and time channels as large as 2048x2048 pixels and 256 time channels, or 1024x1024 pixels and 1024 time channels 

Becker and Hickl offer a complementary range of short pulsed diode lasers that are ideal excitation sources for TCSPC measurements.


  • B&H's multidimensional TCSPC technique
  • Time channel width down to 407fs
  • Electrical time resolution down to 3.3ps FWHM / 1.6ps RMS
  • High speed interface for laser scanning microscopes
  • Multidetector / multiwavelength capability
  • Unlimited sequential recording of curves or images
  • Measurement time down to 0.1µs
  • Reversed start/stop laser repetition rates up to 150MHz
  • Recorded count rate up to 5MHz, dead time 100ns, saturated count rate 10MHz
  • Works at any scan rate of confocal or multiphoton laser scanning microscopes
  • Photon distribution modes and time tag mode



This product could be used for the following applications:

  • Fluorescence correlation spectroscopy
  • FLIM
  • Laser scanning microscopy
  • Single molecule spectroscopy
  • Fluorescence


This product is manufactured by Becker and Hickl GmbH.

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