Application of Schottky diode:
It is used in rectification of very high frequency signals.
It is used in communication system circuits.
It is used in AC to DC converters.
It is used in Radar system.
It is used in switched mode power supply.
It is used as fast switching device in digital computers.
Application of LASER diode:
It is used in detectors and sensors
It is used for flow measurement.
It is used to measure distance, angle etc.
It is used in welding.
It is used as a light source in fibre optic communication.