Characterization of optical and nonlinear properties of periodically-poledRbTiOAsO4 in the mid-infrared range via difference-frequency generation

Citation
K. Fradkin-kashi et al., Characterization of optical and nonlinear properties of periodically-poledRbTiOAsO4 in the mid-infrared range via difference-frequency generation, APP PHYS B, 71(2), 2000, pp. 251-255
Citations number
24
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS B-LASERS AND OPTICS
ISSN journal
09462171 → ACNP
Volume
71
Issue
2
Year of publication
2000
Pages
251 - 255
Database
ISI
SICI code
0946-2171(200008)71:2<251:COOANP>2.0.ZU;2-G
Abstract
Tunable mid-infrared coherent radiation (3.25-3.7 mu m) is generated by qua si-phase-matched difference frequency generation in a multi-grating periodi cally-poled RbTiOAsO4 crystal. The spontaneous polarization and coercive fi eld of Aux-grown RbTiOAsO4 are determined by polarization switching measure ments. The nonlinear interaction enables us to explore the optical and nonl inear properties of this material in the mid-infrared range, where data is scarce. The measurements are used to derive a mid-infrared corrected disper sion equation for n(z) in RbTiOAsO4. This equation is in excellent agreemen t with previously published measurements of nonlinear interactions in perio dically-poled RbTiOAsO4. The measured wavelength and temperature bandwidths are approximate to 48 nm cm and approximate to 29 degrees C cm, respective ly. A relatively high temperature tuning slope of the phase-matched idler w avelength, -1.27 nm/degrees C, is measured. This may be useful for realizin g temperature-tuned nonlinear devices.