Mark 4 All Fiber Doppler Velocity Interferometer System
Full Quadrature Push Pull
No Aligning the Interferometer Ever!
Operating and Alignment Lasers, Probe, and 4 Photodetector Modules Included
Papers by Physicists Using our FDVI

Series G Unamplified Single Photodetectors for light levels on the order of 0.1 mW

Series F Amplified Single Photodetectors for light levels less than 0.1 mW

Series F Amplified Differential Photodetectors like Series F single detectors, but only the difference is amplified

Power Supply recommended for DC coupled PDMs and all Differentials

Single and Differential Detectors
with sensitivities to over a million V/W and speeds to 10 GHz