单光子计数相机SPAD32x32+TDC/TCSPC
TCSPC(时间相关单光子计数)相机基于32x32智能像素,每个像素包含一个SPAD(单光子雪崩二极管)探测器和一个时间数字转换器(TDC)。在2D/强度模式下,SPAD阵列每帧提供1024个“字”,每个“字”6bit(即单帧光子计数动态***多64光子)。在3D深度分辨/计时模式下,SPAD阵列每帧提供1024个“字”,每个“字”10bit(即单帧时间分辨低至312ps,满量程范围320ns)。帧数在burst模式下高达100kfps(即***小积分帧时间为10us),连续模式为10kfps。产品特点多模式光子计数2D图像3D渡越时间TCSPC(时间相关单光子计数)图像尺寸:32x32(1024)pixels像素内计数器:6bit(光子计数)像素内TDC:10bit(光子计时)***大帧数:100,000fps(burst)/10,000fps(continuous)时间分辨:312ps–0.9ns满量程范围:320ns–0.92µs硬件接口:USB2.0软件界面:MATLAB主要应用单光子计数,计时和成像中长距离激光雷达***影像学,FLIM,FRET时间分辨光谱扩散光学层析成像参数ParameterNotesMinTypMaxUnitsResolutionnumberofpixels32x32pixelsSPADdiameterdiameteroftheSPADintoeachpixel30µmPixelpitchsizeofeachpixel150µmPixelfill‐factorwithnomicrolens3.14%PhotonDetectionEfficiency(PDE)ofSPADdetectors@420nm50%@300nmand@650nm20%@800nm5%Darkcountrate(DCR)withVEX=5V100cpsAfterpulsingwith20nshold‐offtime2.6%Opticalcross‐alkbetweennearestpixels0.01%Photon‐countingdynamicsnumberofbitsofthein‐pixelcounter6bitPhoton‐imingdynamicsnumberofbitsofthein‐pixelTDC10bitOn‐boardclock(fclock)adjustablethroughtheGUIinterface70200MHzTDCleastsignificantbit(LSB)[1]withfclock=200MHz312pswithfclock=160MHz390pswithfclock=70MHz900psTDCfull‐scalerange(FSR)[1]withfclock=200MHz320nswithfclock=160MHz400nswithfclock=70MHz920nsFull‐scaledepthrangemaxscenedepth,aroundthetargetdistance(evenkilometersfromthecamera,dependingontheopticalsetup)4860138mTDCsingle‐shotprecision(FWHM)withclock=160MHz(all32x32TDCworkinginparallel)660psframe‐ateBurstmode(limitedbyFPGAread‐out)nolimit100,000fpsContinuousmode(limitedbyUSB2.0link)nolimit10,000fpsCamerapowersupply+5V)