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- pile-up_effect
- ===== The Pile-Up effect describes the effects of photons lost at high photon count rates due to the dead time of the TCSPC dev... onics have a [[dead time]]. After registering one photon the device needs some time to be ready for the next photon to detect. The dead time for TCSPC devices used f... Considering the dead time we can detect only one photon after one laser shot. "Pile up" describes the effects of photons lost at hight photon count rates due to the dead... 0% of the excitation rate. This allows the single photon statistics: The probability of detecting more than one fluorescence photon per excitation pulse is negligible. * [[howto:
- differential_count_rate
- /Differential count rate// is the real, momentary photon density (probability of encountering a photon) during a time interval when a detected signal is... ing-rate dependence of the timing shift of single photon avalanche diodes by photon interval analysis, Rev. Sci. Instrum. **84**, 036
- t3-mode
- n a span of 16 ns. If the time difference between photon and the last sync event is larger, the photon event cannot be recorded. This is the same as in ... typ. 95 ns for PicoHarp) Since there is only one photon channel, only autocorrelations can be calculated
- tttr
- s suitable for [[FLIM]] measurements. The markers are used to synchronise the photon events with a scanning process allowing to sort the photons into image pixels.
- dead_time
- e the TCSPC system is blind. If for example two photons are detected with the dead time of the TCSPC device the second photon will be lost. This leads to the so called [[gloss... y:Pile-up Effect]]. Note that not only TCSPC devices but also photon counting devices exhibit dead times.
- tcspc
- d **S**ingle **P**hoton **C**ounting: A stream of photons is recorded, each photon with respect to a (often periodical) signal, e.g. a repeated laser pulse. The single photon events are sorted into histogram channels that co
- hybrid_pmt
- led [[https://www.picoquant.com/products/category/photon-counting-detectors/pma-hybrid-series-hybrid-photo... PMA Hybrid]]. The PMA Hybrid is a compact single photon sensitive detector based on a fast hybrid photomu
- mcp
- MCP) A microchannel plate [[PMT]] is a sensitive photon detector. It consists of an array of glass capill... Ps is sufficiently small to perform time-resolved photon counting on a sub-nanosecond- scale, usually outp
- poisson_distribution
- especially for [[TCSPC]]: The expected number of photons in any TCSPC channel is given by the 'real' deca... astic nature of the measurement process (either a photon is detected or it is not) introduces noise, which
- mcs
- his term is used in the following context: Single photon events, as originating from a [[TTTR]] measuremen... . In a subsequent analysis the binned ensemble of photons can be used to form [[TCSPC]] histograms, which
- spad
- above the breakdown voltage in reverse bias. One photon may trigger the avalanche process and generates a
- t2-mode
- ] signal. Usually both inputs are used to connect photon detectors. The events from both channels are reco
- fast_flim
- ast lifetime of each pixel represents the average photon arrival time with respect to the preceding laser
- bifl
- **I**ntegrated **F**luorescence **L**ifetime: The photon events of a complete burst are accumulated into a
- marquardt-levenberg
- analysed by the SymPhoTime software the number of photons for a given decay may be very small, so the expe