![]() ![]() The FWHM can be obtained by the standard deviation with the relation FWHM = 2 √ 2 ln 2 σ ≈ 2.35 σ. The single channel jitter corresponds to σ / √ 2 from this two-channel measurement, assuming equal Gaussian contributions from both signals. We fit a Gaussian function to this histogram and determine RMS and FWHM. Then we use the quTAG software to generate a startstop-histogram. This pulse gets split into two by a power splitter and sent into two different inputs of the quTAG (i.e. In order to measure the jitter, we generate an electrical pulse with steep edges. HBT measurements, fluorescence correlation spectroscopy). The software includes an analyzing tool for lifetime measurements and correlation functions (e.g. The device allows synchronizing with up to four standard models with all 16 stop channels using the same timebase and clock input. ![]() A separate channel for external clock is available and easily accessible on the front panel. This model features 1 start and 4 stop channels. Examples for LabView, C/C++ and Python are included. ![]() It can also be integrated in custom software. It is delivered with software for Windows and Linux with an easy-to-use graphical user interface. It allows capturing up to 100 million time tags per second and uses a USB3.0 connection to transfer the extensive data. Its user-adjustable design registers all signals between -3V up to +3 V, like the widely used LVTTL or NIM. It is capable of detecting events with a digital resolution of 1 picosecond and a jitter under 10 ps RMS. The quTAG is a high-end, easy-to-use time-to-digital converter and time tagging device designed for time correlated single photon counting (TCSPC). Timing jitter down to 3.0 ps (RMS) / 7.0 ps (FWHM) ![]()
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