Foton Sayımı ve Zamanlaması
TCSPC and Time Tagging Electronics
PicoQuant offers several modules for Time-Correlated Single Photon Counting (TCSPC), Multi-Channel Scaling (MCS), coincidence correlations, or event timing with temporal resolutions between picoseconds and milliseconds. Single channel as well as multichannel versions with either USB or PCIe interface can be provided. All units work in the histogramming mode and offer two time tagging modes. Their high quality and reliability are expressed by a unique 5-year limited warranty. The following table lists the main differences: | |
HydraHarp 400
Multichannel Picosecond Event Timer & TCSPC Module
- • Up to 8 independent input channels and common sync channel (up to 150 MHz)
- • 65536 histogram bins per channel, minimum width 1 ps
- • Time tagging with sustained count rates up to 40 Mcps
- • Histogrammer measurement ranges from 65 ns to 2.19 s
PicoHarp 300
Stand-alone TCSPC Module with USB Interface
- • Two identical synchronized but independent input channels
- • 65536 histogram time bins, minimum width 4 ps
- • Time tagging with sustained count rates up to 5 Mcps
- • Histogrammer measurement range from 260 ns to 33 µs (depending on resolution)
TimeHarp 260
TCSPC and MCS board with PCIe interface
- • One or two independent input channels and common synch channel (up to 100 MHz)
- • Two models with either 25 ps (PICO model) or 250 ps (NANO model) base resolution
- • “Long range mode” option for PICO model with 2.5 ns base resolution
- • Ultra short dead time (< 25 ns for PICO model, < 2 ns for NANO model)
Photon Counting Detectors
The available photon counting detectors include photomultiplier tubes (PMT), Hybrid photomultiplier detectors (HPD) and Single Photon Avalanche Diodes (SPAD) that cover different spectral ranges between the UV and the NIR. All detectors feature timing resolutions in the picosecond range, depending on model and operating conditions. The following table gives a rough overview about the key parameters:
PMA Hybrid Series
Hybrid Photomultiplier Detector Assembly
- • Timing resolution down to < 50 ps (FWHM, cathode dependent)
- • Detection efficiency up to 45% (cathode dependent)
- • Active area up to 6 mm
- • Negligible afterpulsing
PMA Series
Photomultiplier Detector Assembly
- • Timing resolution < 180 ps (FWHM)
- • Quantum efficiencies up to 40% (cathode dependent)
- • Spectral ranges from 185 nm to 920 nm available
- • Optional thermoelectric cooler
PDM Series
Single Photon Avalanche Diodes
- • Timing resolution down to < 50 ps (FWHM)
- • Detection efficiency up to 49 %
- • Different active areas: 20, 50, and 100 µm
- • Ultra stable at high count rates
Software
PicoQuant offers specialized software for the analysis of fluorescence measurements. This includes a software for global fluorescence decay data analysis as well as a specialized imaging and correlation software, which supports methods like FLIM and FLIM-FRET, FCS, FCCS, FLCS, anisotropy and the analysis of fluorescence time traces. | |
SymPhoTime 64
Fluorescence Lifetime Imaging and Correlation Software
- • Point, 2D, and 3D TTTR data acquisition with online preview of FLIM, FCS, time-traces, or TCSPC histograms
- • FLIM, fast FLIM, FLIM-FRET
- • FCS, FCCS, FLCS, PIE-FCS, coincidence correlation, total correlation
- • FRET, PIE-FRET, fluorescence time traces, anisotropy
FluoFit
Global Fluorescence Decay Data Analysis Software
- • Tail fitting or iterative reconvolution, maximum likelihood estimation
- • Exponential decay models up to 4th order
- • Lifetime distribution models (Gaussian, Lorentzian, Stretched Exponentials)
- • Anisotropy analysis with an exponential decay model up to 4th order
FluoFit
Global Fluorescence Decay Data Analysis Software
- • Tail fitting or iterative reconvolution, maximum likelihood estimation
- • Exponential decay models up to 4th order
- • Lifetime distribution models (Gaussian, Lorentzian, Stretched Exponentials)
- • Anisotropy analysis with an exponential decay model up to 4th order
Accessories
Accessories for photon counting experiments include a router for the PicoHarp 300 TCSPC module, a specialized dual channel power supply for SPADs, a signal delayer with picosecond resolution and a trigger diode. Signal conditioners (inverter, attenuator, pre-amplifier or splitter) as well as signal cables can also be provided. | |
PHR 800
Universal 4-channel detector router for the PicoHarp 300
- • Allows simultaneous measurement of 4 detector signals
- • Adjustable input polarity and trigger threshold
- • Predefined settings for TTL or NIM signals provided by SPAD detectors
- • Optional Constant Fraction Discriminators for PMTs, Hybrid-PMTs and MCP-PMTs
DSN 102
Dual SPAD Power Supply
- • Two-channel power supply for Single Photon Avalanche Diodes (SPAD)
- • Safety shut-down to prevent SPAD degradation
- • Integrated counter
- • Acoustic monitoring and warning
PSD-MOD
Picosecond Delayer
- • 50 ns maximum delay range, 10 ps step
- • TTL and NIM output pulses
- • Up to 390 MHz bandwidth (NIM output)
- • Programmable output width
TDA 200
Trigger Diode Assembly
- • Compact design
- • Fall time typ. 250 ps
- • Pulse width as short as 500 ps (FWHM)
- • Spectral range from 350 to 1100 nm
Adapters, Splitters, Cables
Various accessories for photon counting setups
- • Signal attenuators and inverter
- • TTL to NIM converter
- • Power splitter
- • Signal cables
PAM 102
Pre-Amplifier Module
- • Fast rise time / wide bandwidth
- • Low jitter
- • Ideal for low output fast photon detectors like MCP and PMT
- • 3 dB bandwidth up to 1.8 GHz
Accessories
PQRNG 150
Quantum Random Number Generator
- • Quantum Random Number Generator based on photon arrival times
- • Bit rate: 150 Mbits/s
- • Interface: USB 2.0
- • Software: driver and user library (DLL) for Windows XP, Vista and 7
- • DLL demos and simple GUI for data retrieval to files
