Prisms Laser

Laser Prisms

• Laser Prisms, S1-UV Grade Fused Silica

Brewster & Littrow Prisms

These prisms are used to select a particular wavelength from a multi-wavelength laser. The apex angle of a Brewster laser prism is designed to deviate a ray of a particular wavelength by Brewster's angle, thus minimizing reflection losses when used with linearly polarized light. Only light that travels within the prism parallel to the base will be perfectly transmitted. Since other wavelengths will experience high losses, the Brewster prism can be used intracavity to suppress their gain.

A Littrow laser prism is the result of cutting a Brewster prism in half. The plane of the cut divides the apex angle and is perpendicular to the base of the prism. By adding a reflective coating to the new leg face, the Littrow is used like the Brewster prism, but the output exists back toward the source.

Each of these elements can be used to tune a variety of laser systems efficiently. Tuning is performed by tilting the prism in the path of the beam. The apex angle has been carefully chosen to allow maximum performance at any desired wavelength within the visible spectrum For assistance with these or other similar custom products, please Contact Esco at 1-800-922-ESCO (3726).