For faster navigation, this Iframe is preloading the Wikiwand page for Glan–Taylor prism.

Glan–Taylor prism

A Glan–Taylor prism reflects s-polarized light at an internal air-gap, transmitting only the p-polarized component. The optical axes are vertical in the plane of the diagram.

A Glan–Taylor prism is a type of prism which is used as a polarizer or polarizing beam splitter.[1] It is one of the most common types of modern polarizing prism. It was first described by Archard and Taylor in 1948.[2]

The prism is made of two right-angled prisms of calcite (or sometimes other birefringent materials) separated on their long faces with an air gap. The optical axes of the calcite crystals are aligned parallel to the plane of reflection. Total internal reflection of s-polarized light at the air gap ensures that only p-polarized light is transmitted by the device. Because the angle of incidence at the gap can be reasonably close to Brewster's angle, unwanted reflection of p-polarized light is reduced, giving the Glan–Taylor prism better transmission than the Glan–Foucault design.[1][3] Note that while the transmitted beam is completely polarized, the reflected beam is not. The sides of the crystal can be polished to allow the reflected beam to exit or can be blackened to absorb it. The latter reduces unwanted Fresnel reflection of the rejected beam.

A variant of the design exists called a Glan–laser prism. This is a Glan–Taylor prism with a steeper angle for the cut in the prism, which decreases reflection loss at the expense of reduced angular field of view.[1] These polarizers are also typically designed to tolerate very high beam intensities, such those produced by a laser. The differences may include using calcite selected for low scattering loss, improved polish quality on the faces and especially on the sides of the crystal, and better antireflection coatings. Prisms with irradiance damage thresholds greater than 1 GW/cm2 are commercially available.

See also


  1. ^ a b c Bennett, Jean M. (1995). "Polarizers". In Bass Michael, Ed. (ed.). Handbook of Optics Volume II (2nd ed.). McGraw-Hill. pp. 3.13–3.14. ISBN 0-07-047974-7.
  2. ^ Archard, J. F.; Taylor, A. M. (1948). "Improved Glan-Foucault prism". J. Sci. Instrum. 25 (12): 407–409. Bibcode:1948JScI...25..407A. doi:10.1088/0950-7671/25/12/304.
  3. ^ J.-Y. Fan; et al. (2003). "A study on transmitted intensity of disturbance for air-spaced Glan-type polarizing prisms". Optics Communications. 223 (1–3): 11–16. arXiv:physics/0211045. Bibcode:2003OptCo.223...11F. doi:10.1016/S0030-4018(03)01618-3. S2CID 119094515.
{{bottomLinkPreText}} {{bottomLinkText}}
Glan–Taylor prism
Listen to this article

This browser is not supported by Wikiwand :(
Wikiwand requires a browser with modern capabilities in order to provide you with the best reading experience.
Please download and use one of the following browsers:

This article was just edited, click to reload
This article has been deleted on Wikipedia (Why?)

Back to homepage

Please click Add in the dialog above
Please click Allow in the top-left corner,
then click Install Now in the dialog
Please click Open in the download dialog,
then click Install
Please click the "Downloads" icon in the Safari toolbar, open the first download in the list,
then click Install

Install Wikiwand

Install on Chrome Install on Firefox
Don't forget to rate us

Tell your friends about Wikiwand!

Gmail Facebook Twitter Link

Enjoying Wikiwand?

Tell your friends and spread the love:
Share on Gmail Share on Facebook Share on Twitter Share on Buffer

Our magic isn't perfect

You can help our automatic cover photo selection by reporting an unsuitable photo.

This photo is visually disturbing This photo is not a good choice

Thank you for helping!

Your input will affect cover photo selection, along with input from other users.


Get ready for Wikiwand 2.0 🎉! the new version arrives on September 1st! Don't want to wait?