Single Wavelength Multi-Order Waveplates, Unmounted (WP-M)

 Single Wavelength Multi-Order Waveplates , Mounted (WPRM-M)

• Half wave - rotates the plane of polarization
• Quarter wave - changes polarization from linear to circular
• Anti-reflection coatings : R<0.25% @  per side

These multiple order waveplates are made from a piece of crystal quartz with its optic axis parallel with the plane of polarization. A quarter wave plate has a net retardation of {(2k + 1) x (pi/2)}, where k is an integer, and changes polarization from linear to circular or circular to linear. It will work as a half wave plate when used in double-pass as in a laser cavity. A half wave plate has a net retardation of {(2k + 1) x pi}, where k is an integer, and rotates the plane of polarization by 90deg. These waveplates are available either unmounted or mounted in a metal ring.