What is diffraction grating?

Diffraction grating

Diffraction grating is an extremely useful device. In one of its form it consists of a very large number of narrow slits side by side. The slits are separated by opaque spaces.

Diffraction gratings are of two types; transmission grating and reflection grating.
  1. Transmission grating: When a wavefront is incident on a grating surface light is transmitted through the slits and obstructed by the opaque portion. Such a grating is called a transmission grating.
  2. Reflection grating: When the lines of grating surface are drawn on a slivered surface then light is reflected from the position of the mirror in between any two lines. Such surfaces act as reflection gratings.

Author: Tanmay Chakrabarty

Tanmay Chakrabarty is a former CSE student, currently working as a Senior Software Engineer with 5+ years of experience in the field of Web Application development in PHP+MySQL platform with strong skills in Javascript, JQuery, JQuery UI and CSS. He tries to write notes every week but fails due to heavy loads of duty.

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