VTR16D1H datasheet(4/44 Pages) ETC2

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MODuLES &

REcEIVERS

FORAnALyTIcAL

& MOLEcuLAR

APPLIcATIOnS

ModuleS and optical receiverS

applications

• Particle sizing

• Confocal microscopy

• Photon correlation spectroscopy

• Quantum cryptography

• Astronomical observation

• Optical range finding

• Adaptive optics

• Ultra sensitive fluorescence

features and Benefits

• Peak photon detection efficiency

at 650 nm: 65 % typical

• Active area: 180 µm diameter

• Gated output

• Single +5 V supply

• FC receptacle option for fiber coupling

• EU RoHS compliant

• Array of 4 channels available

product description

SPCM-AQRH is a self-contained module that detects single photons of light over the 400 nm to

1060 nm wavelength range - a range and sensitivity that often outperforms a photomultiplier tube.

The SPCM-AQRH uses a unique silicon avalanche photodiode (SLiK®) with a circular active area

that achieves a peak photon detection efficiency of more than 65 % at 650 nm over a 180 µm diam-

eter. The photodiode is both thermoelectrically cooled and temperature controlled, ensuring stabi-

lized performance despite ambient temperature changes. Circuit improvements have reduced the

overall power consumption.

Count speeds exceeding 20 million counts per second (Mc/s) are achieved by the SPCM-AQRH-1X

module (> 30 million counts per second on some models). There is a “dead time” of 35 ns between

pulses but other values can be set at the factory.

As each photon is detected, a TTL pulse of 2.5 Volts (minimum) high into a 50 Ohm load and 15 ns

wide is output at the rear BNC connector. The module is designed to give a linear performance at a

case temperature between 5˚ C and 40˚ C.

The SPCM is also available in a 4 channel array format, the SPCM-AQ4C. It is a module of 4 APDs

with single power supply and 4 individual outputs.

This series of photon counting modules are designed and built to be fully compliant with the Euro-

pean Union Directive 2002/95EEC - Restriction of the use of certain Hazardous Substances in elec-

trical and electronic equipment (RoHS).

Single Photon

Counting Modules

(SPCM)

www.excelitas.com

Single Photon counting Modules – SPcM

Product Table

Part number

unit

SPcM-AQRH-10

SPcM-AQRH-11

SPcM-AQRH-12

SPcM-AQRH-13

SPcM-AQRH-14

SPcM-AQRH-15

SPcM-AQRH-16

SPcM-AQ4c

c30902SH-tc1

c30902SH-Dtc2

Photo

Sensitive

Diameter

0.18

Fibered

0.475

c/s

1500

1000

500

250

100

500

2500

350

Maximum

Dark count

Rate

65 %

60 %

>5 %

Photon Detection

Efficiency

@ 700 nm

c/s

25M

>2M / channel

Max. count Rate

before Saturation

Dead Time

Pulse Width

1. C30902SH-TC (0º C operation), 2. C30902SH-DTC (-20º C operation)

characteristics SPcM Series

Graph 1

Photon Detection Efficiency (Pd)

Wavelength (nm)

300

500

700

900

1100

Single Photon counting Modules – SPcM

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