“…Availability of UV and deep UV polarization light has greatly facilitated experimental and theoretical studies. The driver for such interests has involved the prospects of tantalizing applications such as 193 nm immersion lithography, , laser-induced photochemical reaction, photodissociation, , and mass spectrometry . To date, several commercial birefringence crystals have been developed, such as CaCO 3 , YVO 4 , MgF 2 , α-BBO, etc.…”