Abstract
Both theoretical estimates and recent experimental studies show that potassium fiuoroboratoberyllate, KBe2BO3F2 (KBBF), possesses excellent linear-optical (LO) and nonlinear-optical (NLO) properties. For example, its transparent range expands from 155 nm to 3700 nm, and it also has a moderate birefringence with Δn = 0.073 in the 589 nm-294.5-nm region. These two properties give the crystal a very wide phasematching capacity. The curve of Fig. 1 indicates that the shortest wavelength of second-harmonic generation (SHG) of KBBF is at 184.7 nm with the phase-matching angle Θpm = 61.
© 1995 Optical Society of America
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