## What is wire grid polarizer?

A Wire Grid Polarizer consist of regularly spaced thin strips of parallel conductive wires. When the polarizer is placed perpendicular to the incoming radiation, the wires transmit the component of the electric field that is perpendicular to the wires, and reflect the component parallel to the wires.

What are the types of polarizer?

The common types of polarizers are linear polarizers and circular polarizers. Polarizers are used in many optical techniques and instruments, and polarizing filters find applications in photography and LCD technology.

How do I know if my polarizer is ideal?

For a linearly polarized electromagnetic wave traveling in the x-direction, the angle the electric field makes with the y-axis is unique. An ideal polarizer is a material that passes only EM waves for which the electric field vector is parallel to its transmission axis.

### How do you determine the transmission axis of a polarizer?

Rotate the unknown polarizer until no light passes through the pair of polarizers. In this orientation, the unknown polarizer’s axis is 90° from the axis of the known polarizer. If a known polarizer with a marked axis cannot be found, the axis can be found by taking advantage of the Brewster effect.

What is the transmission axis of a polarizer?

The transmission axis of a polarizer is the axis such that light with its electric field oriented parallel to this axis will be transmitted. If the light is not already linearly polarized parallel to the transmission axis, only that component of the light parallel to the axis will pass through the polarizer unhindered.

What is Malus law physics?

Malus law states that the intensity of the plane polarized light that passes through the analyzer is directly proportional to the square of the cosine of the angle between the plane of the polarizer and the transmission axis of the analyzer.

#### How polarizing filters are made?

One of the most common polarizers is known as a Polaroid and consists of iodine crystals embedded in a polymer. To create the polarizer, the polymer film is stretched, which causes the polymers to align. Then the film is dipped in a solution of iodine and the iodine molecules attach themselves to the polymer.

What is the difference between polarizer and analyzer?

The main difference between polarizer and analyzer is that polarizer produces plane polarized light whereas analyzer is used to check whether the light has been polarized or not.