Birefringence of yttrium vanadate single crystals in the middle wavelength infrared

Abstract

The birefringence of the yttrium vanadate (YVO 4 ) crystals have been measured for the first time in the middle wavelength infrared (MWIR), i.e., 3-5µm. A Fourier transform spectrometer has been used in the channel spectra technique to achieve a quick measurement. Large birefringence over 0.21 has been observed in the YVO 4 crystals. The transmission over 2.5-17µm of the YVO 4 (0.7mm thick) has been measured, which showed a transparent range up to 5.3µm. These unique features illustrate the good potential of this material for the MWIR polarization applications.

Crystal clear: unveiling giant birefringence in organic–inorganic cocrystals

“…4). 25,65 Besides, Li-4HP2 exceeds other reported organic-inorganic hybrid cocrystals in the shortwave UV regions. For example, ANO 3 •H 3 C 3 N 3 O 3 (A = K and Rb) has values ranging from 0.243 to 0.268 @546.1 nm, 66 AX•(H 3 C 3 N 3 O 3 ) x (A = alkali metal cations, X = Cl/Br/I, x = 1 -2) ranges from 0.071 to 0.28 @800 nm, 9,11,[67][68] and KHC 2 O 4 •(H 3 BO 3 ) has a value of 0.164@1064 nm.…”