Videos & Photos
PV16 Operation Demonstrations
Links below for operation and adjustment of the PV16 amplifier discriminator. Be sure to see BURST PULSE PV16 OUTPUT in PHOTOS under INTERFACES.
It is important to note that the Hamamatsu Hybrid APD output is most noisy when the APD bias is set to ZERO voltage regardless of the cathode high voltage. Paradoxically, the noise goes DOWN very significantly when the APD is biased to about 150V up to the maximum of about 420V. One should operate the APD significantly below the breakdown specified in the data sheet — the PV16 will easily detect single photons with the −8000V supply when the APD is biased to about 350V to 370V.
PV16 Hybrid Threshold Adjustment and Noise Elimination
Be sure to see the important addendum at the end of the video.
Watch on YouTube →
Photon Counting Discriminator Video from PV16 Metal Can PMT
Watch on YouTube →
Photon Counting Video with Varying Light Intensity
Watch on YouTube →
Oscilloscope Photos
Typical Toggle at 1 GHz into TDS694C 3 GHz Oscilloscope. Blue line is the input at 10 mV/div; top and bottom traces are the PV16 output.
Typical Output at 410 MHz. Blue line is the input at 10 mV/div. Top and bottom traces are the PV16 output. Available at a fraction of the cost of competing products — $250.00 with power supply, adjustment tool, and SMA terminator.
USB3 Throughput Verified
USB photon counter interface tested for 400 MB/s sustained throughput.