State of the art time-to-digital converter
The fastest Time-Tagger in the solar system
- Use cases
It consists of 4 input channels and allows capturing up to 100 million time tags per second. Its user-adjustable design registers all signals between -3V up to +3 V, like the widely used LVTTL or NIM.
Separate channels for start and external clock are available and easily accessible on the front panel. It connects with a computer via USB, preferably USB 3.0 to transfer the extensive data.
It is delivered with software for Windows and Linux with an easy-to-use graphical user interface. The software includes an analyzing tool for lifetime measurements and correlation functions (HBT measurements).
It can also be integrated in custom software; libraries for Windows and Linux are provided. Examples for LabView and Python are included.
- < 25 ps / < 10 ps timing jitter (FWHM/RMS)
- 100 MEvents/s max. rate
- 1 ps digital resolution
- 4 stop channels, 1 start channel
- max. 16 stop channels
|Timing jitter||< 10|
|Number of stop channels||4|
|Max event rate||100|
|M/s (per device)
M/s (per channel)
|Input signals||e.g. LVTTL, NIM|
everything between -2 V and +3 V
|Connection to PC||USB 3.0|
|Software||GUI, DLL, LabView, Python, Command line|
|Dimensions||44 x 30 x 5||cm x cm x cm|
All specifications can be found in the datasheet.
Measurement 1: Laser trigger as Start, Single Quantum SNSPD as Stop
We measured a time difference histogram between the trigger pulse from the laser as start and the SQ detector signal as stop.
This is basically the setup for a Fluorescence Lifetime Imaging (FLIM) measurement..
Whole system response function (blue, measured with quTAG): Timing jitter 17.8 ps RMS, 35.9 ps FWHM
For comparison: Detector response function (red, measured with fast oscilloscope): Timing jitter 14.5 ps RMS, 26.1 ps FWHM.
Measurement 2: One SQ Detector as Start, another one as Stop
Here, we measured the time difference histogram between one of the two SQ SNSPDs as Start and the other one as Stop pulse.
Timing jitter of 2 SQ SNSPDs measured with the quTAG (blue): 21.6 ps RMS, 45.6 ps FWHM.