Waveplates ( Low Order Waveplate, Zero Order Waveplate,True Zero Order Waveplate, Achromatic Waveplate, Double Wavelength Wavepl

Low(multiple) order waveplate is designed to give a retardance of several full waves, plus the desired fraction. This result in a single, sically 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 applicatios where the increased sensitivities are not an important. The zero order waveplate is designed to give a retardance of zero full waves, plus the desired fraction. Zero order waveplate shows better performance than multiple order waveplates. It has broad bandwidth and a lower sensitivity to temperature and wavelength changes. It should be considered for more critical applications.。 Achromatic waveplate is made from two different substrate materials such as crystal quartz and magnesium fluoride. For the single material waveplates the working wavelength is very limited because of the dispersion of the material. While Achromatic Waveplate use two different kinds of material, the dispersions of the birefringence are also different. Hence such waveplate is not sensitive to the wavelength change. Dual wavelength waveplate is a multiple waveplate that provide a specitfic retardance at two different wavelengths, it's particularly useful when used in conjunction with other polarization sensitive components to separate coaxial laser beams of different wavelength. Due to the rotation activity of natural quartz crystal, it also can be used as polarization rotators so that the plane of input polarized beam will be rotated at special angle which is determined by the thickness of quartz crystal.