Characterization of optical and nonlinear properties of periodically-poled RbTiOAsO4 in the mid-infrared range via difference-frequency generation

被引:14
作者
Fradkin-Kashi, K [1 ]
Arie, A [1 ]
Urenski, P [1 ]
Rosenman, G [1 ]
机构
[1] Tel Aviv Univ, Fac Engn, Dept Elect Engn Phys Elect, IL-69978 Tel Aviv, Israel
来源
APPLIED PHYSICS B-LASERS AND OPTICS | 2000年 / 71卷 / 02期
关键词
D O I
10.1007/s003400000373
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Tunable mid-infrared coherent radiation (3.25-3.7 mu m) is generated by quasi-phase-matched difference frequency generation in a multi-grating periodically-poled RbTiOAsO4 crystal. The spontaneous polarization and coercive field of Aux-grown RbTiOAsO4 are determined by polarization switching measurements. The nonlinear interaction enables us to explore the optical and nonlinear properties of this material in the mid-infrared range, where data is scarce. The measurements are used to derive a mid-infrared corrected dispersion equation for n(z) in RbTiOAsO4. This equation is in excellent agreement with previously published measurements of nonlinear interactions in periodically-poled RbTiOAsO4. The measured wavelength and temperature bandwidths are approximate to 48 nm cm and approximate to 29 degrees C cm, respectively. A relatively high temperature tuning slope of the phase-matched idler wavelength, -1.27 nm/degrees C, is measured. This may be useful for realizing temperature-tuned nonlinear devices.
引用
收藏
页码:251 / 255
页数:5
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