Thorlabs' line of balanced photodetectors are presented here. Depending on the model, either a silicon or InGaAs detector is employed to enable detection in the 320 - 1000 nm, 800 - 1700 nm, 950 - 1650 nm, 1270 - 1350 nm, or 1200 - 1700 nm range. We also offer fiber interferometers that contain an integrated balanced detector.