The PMCS-150 is a cooled detector module for TCSPC applications. It contains a fast miniature PMT along with a
Peltier cooler, a high voltage generator, a GHz pulse amplifier and a current sensing circuit.
Contact our experts to discuss Becker & Hickl and other photomultipliers.
Due to the high gain and bandwidth of the device a single photon yields an output pulse with an amplitude in the range of 100 to 200 mV and a pulse width of 1.5 ns. The TCSPC instrument response function (IRF) has a width of less than 120 ps FWHM. It decreases to less than 100 ps for small sizes of the illuminated spot on the photocathode. The detector is operated with a fixed gain and from a single +12 V power supply. Overload conditions are internally detected by sensing the PMT output current. When overload occurs the PMT operating voltage is regulated down so that the output current remains on a safe level. Alternatively, the PMCS-150 can be operated from a bh DCU series detector controller module. In that case, the controller provides for power supply, gain control, and overload shutdown. The PMCS-150 interfaces directly to all bh SPC series time-correlated single photon (TCSPC) devices.
Specifications
| Cathode Type | -4 | -110 | -113 | -210 | -20 |
| Wavelength Range/nm | 185 – 870 | 230 – 700 | 185 – 700 | 230 – 700 | 300 – 900 |
| Detector Quantum Efficiency | 25 %
@ 380 nm |
35 %
@ 350 nm |
43 %
@ 350 nm |
18 %
@ 490 nm |
|
| Dark Count Rate (with cooling enabled 2)) / s-1 | 40 | 20 | 20 | 40 | 500 |
| IRF Width, 1 mm Spot / Full Cathode Area (FWHM, typ. Value) | 100 ps / 120 ps | ||||
| Single Electron Response Width (FWHM, typ. Value) | 1.5 ns | ||||
| Single Electron Response Amplitude | -100 to -200 mV | ||||
| Count Rate | > 5 MHz (continuous), > 100 MHz (Peak, < 1 µs) | ||||
| Internal Overload Protection | Down-regulation of PMT voltage | ||||
| Recovery from Overload | Automatically, when light intensity has returned to normal | ||||
| Overload Indicator | LED | ||||
| Overload Signal | TTL / CMOS, open drain, active low | ||||
| Signal Output | |||||
|---|---|---|---|---|---|
| Output Polartiy | Negative | ||||
| Output Connector | SMA | ||||
| Output Impedance | 50 Ω | ||||
| Power Supply | |||||
| Power Supply | +12 V, 300 mA 3) | ||||
| General | |||||
| Cathode Diameter | 8 mm | ||||
| Dimensions (Width x Height x Depth) | (40 x 40 x 120) mm | ||||
| Optical Adapter | C-Mount female | ||||
| Fiber Coupling | SMA 905 or FC on request | ||||
Ophthalmic FLIM (FLIO)
Fluorescence Correlation – FCS
Antibunching Experiments by TCSPC
NIRS
TCSPC FLIM
DCS – Diffuse Correlation
Fluorescence Cross-Correlation – FCCS
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Photonic Solutions Ltd
Unit 2.2 Quantum Court
Heriot-Watt University Research Park
Edinburgh
EH14 4AP
