Littrow prism

Features Uncoated prisms can be used to disperse the light into spectrum Aluminium coated (B face) prisms diverts the beam at a 60deg angle without inverting or reverting the image

Description

Littrow prisms usually are 30 - 60 - 90 deg prisms. The uncoated littrow prism can disperse white light into its spectrum; the coated littrow prism diverts the beam at a 60 deg angle without inverting or reverting the image.

Littrow prisms can also be used as retro-reflecting Brewster prisms, as shown in the picture. They are arranged to that a beam entering at the Brewster angle falls normal to the flat surface and is reflected back along the same path. They are useful in laser cavities where the wavelength of the return beam can be selected by tilting the prism slightly. In this way the gain of the cavity can be tuned to a specific laser line.

 

Stock items (each shipment : 60 EUR for packaging and transport):

Material	Standart dimensions A x B x C	Custom dimensions A x B x C	Coatings	Wavelength	Comments	Stock #	Price €	Qty
IRFS	10.40 x 15.00 x 10.40		Broadband HR coated	1430 - 1630	TJ+ [Angle cut of 55 deg 18 min, backface reflection ]99.5%	C-BX5	75 EUR	2

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