developed in cooperation with developed by www.roithner - laser.com 1 qd800 c - fq ? single photon detection module description qd800 c -fq series of single photon counting modules offers a unique combination of low dark count rates, very low jitter and a fast quenching circuit in a miniature package. the special mechanical design allows a flexible combination with existing systems in the lab oratory. incoming photons generate corresponding electrical pulses which may be conveniently read out at the digital output. features ? low dark rates ? very low jitter ? fast quenching circuit ? high detection efficiency (400 nm to 1000 nm) ? digital output pulse (2 v) at sma connector ? single 5 v dc supply operation ? compatible with third party adapters applications ? quantum optics, quantum cryptography ? fiber optics characterization ? time correlated single photon counting (tcspc) ? fluorescence, fluorescence life time spectroscopy, raman spectroscopy ? single photon source characterization ? eye - safe laser ranging (lidar) ? tim e -of - flight measurements (ranging) ? time - resolved fluorescence spectroscopy ? fluorescence lifetime imaging (flim) ? fluorescence correlation spectroscopy (fcs) ? fluorescence lifetime correlation spectroscopy (flcs) ? single molecule spectroscopy ? optical time domain reflectometry (otdr) ? optical tomography rev . 1 . 0 06 /20 15
developed in cooperation with developed by www.roithner - laser.com 2 maximum rating s parameter symbol values unit min. max. supply v oltage v s 4.5 5.2 v operating t emperature t opr 0 + 4 0 c storage t emperature t stg - 2 0 + 7 0 c count rate 10 mcounts/s electro - optical characteristics parameter symbol values unit min. typ. max. a ctive diameter d 500 m responsivity at 830 nm s 128 a/w quantum efficiency at 830 nm 77 % dark count rate * 1 qd800 c - fq - 500 500 counts/s qd800 c -fq -50 50 counts/s qd800 c - fq - 20 20 counts/s timing resolution t s 300 ps dead time range t d 90 ns output pulse amplitude (into 50 ohm) 2.0 v digital out ? t - ok * 2 0 3.3 v analog out ? t mp * 3 0 1.5 v supply voltage v s 4.8 5.0 5.2 v supply current i s 230 ma *1 dark count rate at - 20c and 5% photon detection probability (830 nm, ambient temperature of 22c). *2 if the temperature is sufficient ly low (tmp = set point) , t - ok goes high *3 the voltage of the analog out t mp represents the temperature of the spad. see diagram below.
developed in cooperation with developed by www.roithner - laser.com 3 performance characteristics typical spectral responsivity temperature diagram see also formula on page 5 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 0,10 0,20 0,30 0,40 0,50 0,60 0,70 0,80 0,90 1,00 1,10 1,20 1,30 1,40 spad - temperature [ c] analog out for spad - temperature [v]
developed in cooperation with developed by www.roithner - laser.com 4 outline dimensions q d 800c -fq a ll dimensions in mm
developed in cooperation with developed by www.roithner - laser.com 5 connector description sma connector : output pulse: 2v on 50 ohm (positive edge) 5 - pole board connector: ? power in (+5v dc , 500ma ) ? power ground ? analog output (tmp) 0 - 1,5v (represents the temperature of the spad. see formula below) ? analog ground ? digital input (+5v disables the spad bias voltage) ? digital output (t - ok): output is high i f the temperature is s ufficient low (tmp = set point) (connector plug: 2pol. molex 51021 - 0200, 4pol. molex 51021 -0400) temperature f ormula: t[c] = 3200/ln(u[v]* 296594 / (1,5 - u[v])) - 273,15 adjustments procedure: the spad temperature (tmp) and the q uantum efficiency (qe) can be adjusted with two potentiometers. step 1: adjust temp anti clockwise (decrease temperature) until the desired t emperature is achieved. step 2: adjust qe clockwise (increasing qe) until the desired dark count rate or detection efficiency is achieved factory settings: tmp ? -20 c (temp analog output = 1,16v) qe ? set to the dark count rate according to the part number extension 500, 50, 20 counts/s
developed in cooperation with developed by www.roithner - laser.com 6 accessories l ens holder adapter adapt -c - sm1 roithner lasertechnik gmbh adapt -c -sm 0 5 roithner lasertechnik gmbh adapt -c - sm05 -p roithner lasertechnik gmbh
developed in cooperation with developed by www.roithner - laser.com 7 accessories adapt -c - rms roithner lasertechnik gmbh fc/pc fiber adapter adapt -c - fc roithner lasertechnik gmbh multicube ? system 48mc -sm - 19.5 sch?fter+kirchhoff gmbh
developed in cooperation with developed by www.roithner - laser.com 8 accessories cage system spheres #85- 624 cage sphere with (5) 30mm ports and (1) 43mm port edmund optics inc. #85- 846 cage system adapter plate edmund optics inc. 30 mm cage cube cage system spheres c4w 4 - way mounting cage cube thorlabs inc. c6w 30 mm cage cube: 6 mm through holes thorlabs inc. holder on mounting base cage system spheres ba3/m mountin g base , 50 mm x 75 mm x 10 mm thorlabs inc. ph2 post holder, spring - loaded thumbscrew thorlabs inc. tr30/m optical post, ss, m4 setscrew, m6 tap thorlabs inc.
developed in cooperation with developed by www.roithner - laser.com 9 order information part no. timing resolution dead time range dark count rate availability qd800 c - fq - 500 300 ps 90 ns <500 counts/s available qd800 c -fq -50 300 ps 90 ns <50 counts/s available qd800 c - fq - 20 300 ps 90 ns <20 counts/s available qd800 c -fq - tsc -20 300 ps 90 ns <20 counts/s q4/2015 qd800 c - fq - tsc - 10 300 ps 90 ns <10 counts/s q4/2015 qd800 c -fq - tsc -5 300 ps 90 ns <5 counts/s q4/2015 qd800 c - fq - qsc - 4 300 ps 90 ns <4 counts/s q1/2016 qd800 c - fq - qsc - 2 300 ps 90 ns <2 counts/s q1/2016 qd800 c -fq - qsc -1 300 ps 90 ns <1 counts/s q1/2016 qd800 c - fq - lj - 200 100 ps 90 ns <500 counts/s q2/2016 qd800 c -fq -lj -50 100 ps 90 ns <50 counts/s q2/2016 qd800 c - fq - lj - 20 100 ps 90 ns <20 counts/s q2/2016 ? do not hesitate to ask for special features : office@roithner - laser.com ? all rights reserved the above specifications are for reference purpose only and subjected to change without prior notice
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