PhotoMultiplier Tube
It is very sensitive device in which electrons emitted from photosensitive cathode strike a second surface called as dynode. Dynode is positive +ve with respect to the original cathode. Electrons are this accelerated and can knock out more than one electron from the dynode.
The above process is repeated several times, so more than 106 electrons e–s are finally collected for each photons striking the first cathode surface. So more amount of photocurrent we get.
Photodetector
A photo is nothing but light. A detector is nothing but a device that detects something. Therefore, we can directly conclude that a photodetector can be defined as a device that is used to detect light radiations by absorption. In this Article, We will be going through Photodetector, We will start our Article with What is Photodetector?, Then we will go through its brief Working, then we will go through its properties and go through all the types, At last, we will conclude our Article with Advantages, Disadvantages and Some FAQs.
Table of Content
- What is PhotoDetectors ?
- Working of PhotoDetector
- Classes of PhotoDetector
- Photodetector Properties
- Types of PhotoDetector
- Comparison Between Photodetector and Photodiode
- Applications of Photodetector