UV Grade Fused Silica Prisms

Right-angle UV grade fused silica prisms - buy online
Retroreflector Prisms - buy online
Dove prisms - buy online
Dispersion Prisms - buy online
Wedge Prisms
Brewster Dispersion Prisms

Right-angle UV grade fused silica prisms

These prisms are 45-45-90 degree prisms, which are used to direct beams at 90 degrees. Very high prism transmission achieved by using the hypotenuse face in total internal reflection (TIR). The right angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads because they combine the mounting and acoustic isolation advantages of a prism with the excellent transmission of UV grade synthetic fused silica. They are easier to mount, and deform much less than mirror in response to external mechanical stress.

Various antireflection coating are available for the entrance and exit faces.

All right-angle prisms listed have entrance and exit faces of identical size and shape. Triangular faces are fine ground, and edges are slightly beveled.

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Retroreflector Prisms

Retroreflector prism has 3 mirror surfaces making angles of 90° to each other juxtaposed to form the corner of a cube with the entrance face perpendicular to cube diagonal. This retroreflector, also called trihedral retroreflector or corner cube reflector has the property that any ray entering the effective aperture will be reflected and emerge from the entrance/exit face parallel to itself, but with opposite direction of propagation. An incident beam, exactly filling the effective aperture, is reflected exactly back on itself. These properties are, within acceptance angle limits, independent of the orientation of the retroreflector. Retroreflectors therefore find frequent application in situations where orientation is difficult or impossible to control, and where a mirror would therefore be unsatisfactory. The retroreflector, like the right angle prism, based on the principle of total internal reflection (TIR). As a result, it also has very high transmission.

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Dove prisms

Dove prisms are used as image rotators in a variety of optomechanical systems. Object and it inverted image created by Dove prism lie on common axis. As the prism is rotated around an axis parallel to hypotenuse face, the image passing through will rotate at twice the angular velocity of the prism. Light entering the Dove prism must be parallel or collimated, because the length of the prism is typically four or five times the height of the prism. The hypotenuse face of a dove prism is the face of the largest area. Normally the Dove prism is used in the total internal reflection (TIR) mode, with the hypotenuse face unaluminized. Cleanliness of this face is important.

The clear aperture of these prisms is square and is given by the dimension A in the figure. Sides are fine ground. All edges are lightly beveled. Single-layer AR coatings and broadband antireflection coatings are available for the entrance/exit faces on special request.

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Dispersion Prisms

These prisms are 60° prisms, which are used to spectrally disperse light.

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Wedge Prisms

Wedge prisms are used as beamsteering elements in optical systems.

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Brewster dispersing prisms

These prisms are made so that entrance and exit beams pass through at the Brewster angle. Like Brewster angle windows, laser dispersing prisms can be used inside the cavity of a laser operating on very low gain laser transitions, where even slight reflection losses may be intolerable.

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Del Mar Photonics - Femtosecond Systems - Greyhawk Optics - Femtopulse - Del Mar Photonics at Optics and Photonics 2007 - Del Mar Photonics applications group - FS map - fs - map