Waveplate

A waveplate, also known as a phase retardation plate, is fabricated from a birefringent material and is an optical device that can produce an additional optical path difference (or phase difference) between two mutually perpendicular light vibrations.

Material: Crystal Quartz&MgF2 Typical Diameter (Φmm) (Φ): 10.0, 12.7, 15.0, 20.0 Diameter Tolerance: +0.0/-0.2

Unlike standard waveplate, Achromatic Waveplate( AWP) provide a constant phase shift independent of the wavelength of light that is used. This wavelength independence is achieved by using two different crystalline materials to yield quarter- or half-wave retardation over a broad spectral range. The Retardation tolerance of our AWP is better than λ/100 over the entire wavelength range. The flat response of an AWP is ideal for use with tunable lasers, multiple laser-line systems and other broad spectrum sources.

Material: Crystal Quartz Typical Diameter (Φmm) (Φ): 10.0, 12.7, 15.0, 20.0, 25.4, 30.0 Diameter Tolerance: +0.0/-0.2

The multiple order waveplate is designed to give a retardance of several full waves, plus the desired fraction. This result in a single, physically robust component with desired performance. However, even small changed in wavelength or temperature will result in significant changes in the desired fractional retardance. They are less expensive and find use in many applications where the increased sensitivities are not an important.

Standard Wavelength: 266, 355, 532, 632.8, 780, 808, 850, 980, 1064, 1310, 1440, 1550, 1590 nm Note: (1).Other wavelengths within the range of 250nm-1650nm are also available upon request. (2).Holder: To use the roating holder is available upon request.

A waveplate or retarder is an optical device that alters the polarization state of a light wave traveling through it. A waveplate works by shifting the phase of the light wave between two perpendicular polarization components. A typical waveplate is simply a birefringent crystal with a carefully chosen thickness. The crystal is cut so that the extraordinary axis is parallel to the surfaces of the plate. When the extraordinary index is smaller than the ordinary index, as in calcite, the extraordinary axis is called the fast axis and the ordinary axis is called the slow axis. Light polarized along the fast axis propagates faster than light polarized along the slow axis. Thus, depending on the thickness of the crystal, light with polarization components along both axes will emerge in a different polarization state. Half waveplate A half waveplate rotates linearly polarized light to any desired orientation. The rotation angle is twice the angle between the incident polarized light and optical axis. Quarter Waveplate When linearly polarized light is input at 45 deg to the axis of a quarter waveplate , the output is circularly polarized. Similarly, input circularly polarized light is transformed into linearly polarized light. The thickness of the quarter waveplate is such that the phase difference is 1/4 wavelength (λ /4, Zero order) or certain multiple of 1/4-wavelength [(2n+1)λ /4, multiple order]