Patent ID: 8300305
Filing Date: 2012-10-30
Classification: C01B,G02F

Abstract:
1. A method of producing ultraviolet light characterized in that a crystal of the family A x M 1-x X 3 (BO 3 ) 4 , wherein both A and also M stand for an element from the group Y, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, A≠M and X is selected from the group consisting of Al, Ga, and Sc and 0≦x≦1, is used as a non-linear optical element to produce light of a wavelength of less than 0.360 μm, and wherein an electromagnetic wave of the wavelength λ is passed through the crystal in such a way that the propagation direction includes the angle θ+/−Δθ with the optical axis Z and the angle φ+/−Δφ with the optical axis X and the crystal is used to produce the second harmonic of the wavelength 0.5λ, wherein λ, θ, Δθ, φ, Δφ and 0.5λ assume the values of a line in the following Table: