1. Nanotechnology in lithium niobate for integrated optic frequency conversion in the UV
- Author
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Alfonso Carmelo Cino, Alessandro Busacca, S. Riva-Sanseverino, Claudia Santini, Gaetano Assanto, Antonino Parisi, Luigi Oliveri, BUSACCA A C, SANTINI C, OLIVERI RL, RIVA SANSEVERINO S, PARISI A, CINO A, ASSANTO G, Proc. ESA/CNES ICSO 2006 (Sixth International Conference on Space Optics), Busacca, Alessandro, Santini, Claudia, RIVA SANSEVERINO, Stefano, Oliveri, Luigi, Parisi, Antonio, Cino, Alfonso, and Assanto, Gaetano
- Subjects
Materials science ,nanotechnology ,second harmonic generation ,business.industry ,lithium niobate ,ferroelectrics ,Lithium niobate ,Energy conversion efficiency ,Second-harmonic generation ,Photorefractive effect ,medicine.disease_cause ,Laser ,law.invention ,chemistry.chemical_compound ,Laser linewidth ,Optics ,chemistry ,law ,Lithium tantalate ,medicine ,Optoelectronics ,business ,Ultraviolet - Abstract
In the domain of Earth Explorer satellites nanoengineered nonlinear crystals can optimize UV tunable solid-state laser converters. Lightweight sources can be based on Lithium Niobate (LN) domain engineering by electric field poling and guided wave interactions. In this Communication we report the preliminary experimental results and the very first demonstration of UltraViolet second-harmonic generation by first-order quasi-phase-matching in a surface-periodically-poled proton-exchanged LN waveguide. The pump source was a Ti-Sapphire laser with a tunability range of 700- 980 nm and a 40 GHz linewidth. We have measured UV continuous-wave light at 390 nm by means of a lock-in amplifier and of a photodiode with enhanced response in the UV. Measured conversion efficiency was about 1%W-1cm-2. QPM experiments show good agreement with theory and pave the way for a future implementation of the technique in materials less prone to photorefractive damage and wider transparency in the UV, such as Lithium Tantalate.
- Published
- 2017
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