Fig. 1 | Nature Communications

Fig. 1

From: The must-have and nice-to-have experimental and computational requirements for functional frequency doubling deep-UV crystals

Fig. 1

Deep-UV nonlinear optical materials. Deep-UV spectrum from 225 nm to 125 nm depicting the absorption edges of some NLO materials, along with excimer wavelengths F2 and ArF (blue dashed lines), 5th, 6th, and 7th harmonics of Nd:YAG: 1064 nm (green dotted line), and energies at 6, 7, 8, and 9 eV (red dashed lines). The arrows denote the absorption edge for each material, where the numbers in square brackets are the wavelengths where coherent radiation from a fundamental 1064 nm source is reported. The birefringence is given after the compound. See ref. 10 for the birefringence phase-matching condition expressions for uniaxial and biaxial crystals. Beryllium-containing borates exhibit absorption edges below 175 nm (7.08 eV), 147 nm (8.43 eV), and 160 nm (7.75 eV) for KBBF and RBBF respectively, as well as appropriate birefringence values, i.e., 0.080 (at 1064 nm for KBBF) and 0.073 (at 649.3 nm for RBBF) and nonlinear optical dij constants, 0.47 pm/V (KBBF) and 0.45 pm/V (RBBF). Adapted from ref. 15

Back to article page