...
3. chop the source at a frequency that allows for correlated double sampling of the photocurrent. This means a chop rate of faster than a few Hz.
4. Custom electronics, with autozeroing front end:
...
3. chop the source at a frequency that allows for correlated double sampling of the photocurrent. This means a chop rate of faster than a few Hz.
4. Custom electronics, with autozeroing front end: