Lab equipment/NE43500

NE43500

Description

NE43500 is a differential photocurrent amplifier that outputs both photocurrent difference and sum. With the sum output. The reason to have the sum output is to cancel the laser power noise when the polarimeter is misbalanced. The polarization rotation angle $\varphi$ can be found as:

${\frac {\Delta }{\Sigma }}=\tan \varphi$,

Where $\Delta$ is the difference and $\Sigma$ is the sum of photocurrents.