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Proceedings Paper

Temperature-tuned 90° phase-matched SHG and DFG in BaGa4S7
Author(s): Nobuhiro Umemura; Valentin Petrov; Valery V. Badikov; Kiyoshi Kato
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Paper Abstract

By pumping a yellow phase, 1.4-cm-long, θ=9.2°(Φ=0°) cut BaGa4S7 crystal with a Nd:YAG laser-pumped KTP and AgGaS2 optical parametric oscillators (OPOs) and second-harmonic generation (SHG) of a frequency-doubled CO2 laser, we have achieved the 90°phase-matched type-1 SHG in the 0.8390-2.7750 μm range along the y(=a) and z(=b) axes by heating the crystal from 25ºC to 130ºC.

In addition, by mixing the signal outputs of a Nd:YAG laser-pumped KTP/OPO and its pump source, we have achieved the 90°phase-matched type-1 difference-frequency generation (DFG) in the 5.341-7.506μm range along the z axis at a crystal temperature of 25-185ºC. The Sellmeier and thermo-optic dispersion formulas that reproduce well these experimental results are presented.

Paper Details

Date Published: 27 February 2015
PDF: 6 pages
Proc. SPIE 9347, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV, 93470N (27 February 2015); doi: 10.1117/12.2077463
Show Author Affiliations
Nobuhiro Umemura, Chitose Institute of Science and Technology (Japan)
Valentin Petrov, Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie (Germany)
Valery V. Badikov, Kuban State Technological Univ. (Russian Federation)
Kiyoshi Kato, Chitose Institute of Science and Technology (Japan)


Published in SPIE Proceedings Vol. 9347:
Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications XIV
Konstantin L. Vodopyanov, Editor(s)

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