1991•Japanese Journal of Applied PhysicsRequires access

Phase-Matching of Optically Second-Harmonic Generation in the Single Crystals of Gd- and La-Added Barium Sodium Niobate

Masaji Shimazu, Masayuki Tsukioka, Shinichiro Kuroiwa, Yasuo Tanokura, Sadao Tsutsumi

Abstract

Optically microscopic observation, measurements of the phase-matching temperature of second-harmonic generation (SHG) and evaluation of the SHG conversion efficiency were carried out for three kinds of single crystals: barium sodium niobate (BNN), La-added BNN [BN(La)N] and Gd-added BNN [BN(Gd)N]. The best crystalline-quality crystal was [BN(Gd)N] and the crystal showing the highest SHG conversion efficiency was also [BN(Gd)N]. The phase-matching temperatures were about 120°C and 160°C. Some discussion was given on the SHG phase-matching.

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Key concepts: Second-harmonic generation, Materials science, Phase matching, Barium, Crystal (programming language), Energy conversion efficiency, Phase (matter), Single crystal