Thorlabs offers both quarter- and half-wave multi-order wave plates. Compared to their zero-order counterparts, the retardance of multi-order wave plates will be more sensitive to wavelength and temperature changes. Our multi-order wave plates are available for a number of discrete wavelengths ranging from 405 nm to 1550 nm. We also offer dual-wavelength versions for use at both 532 nm and 1064 nm.
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