Devices for Optical power meter.

UV power meters

Hamamatsu offers a new optical power meter designed to measure absolute power of UV light.

Si photodiodes


Featuring high sensitivity and low dark current, these Si photodiodes are specifically designed for precision photometry and general photometry/visible range.

Photodiode modules


To make our photodiodes easier to use, we offer photodiode modules with an internal current-to-voltage conversion amplifier.



Si APDs are high-speed, high sensitivity photodiodes having an internal gain mechanism, and can be used in measurements at very low light levels.

APD modules


These are high-speed, high-sensitivity photodetectors using an APD. An APD, a low-noise amplifier, and a bias power supply are assembled together in a compact case. Simply connecting to a low voltage DC power supply allows light measurements with an S/N level dozens of times higher than PIN photodiodes.

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