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Electro-optically, widely tunable optical parametric oscillator based on periodically poled lithium niobate
We report fast and wide wavelength tuning of a ns-optical parametric oscillator (OPO) based on a periodically poled lithium niobate crystal (PPLN) with a three-segment structure. An ultra-broad parametric gain was accomplished by appropriately choosing the pump wavelength and the poling period for g...
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Published in: | Optics communications 2020-03, Vol.459, p.125077, Article 125077 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We report fast and wide wavelength tuning of a ns-optical parametric oscillator (OPO) based on a periodically poled lithium niobate crystal (PPLN) with a three-segment structure. An ultra-broad parametric gain was accomplished by appropriately choosing the pump wavelength and the poling period for group velocity matching between the signal and the idler. While the first segment of the PPLN generated ultra-broad signal and idler bands, the third segment amplified selected portions of the spectra, which could be controlled electro-optically by applying a dc electric field in the middle single-domain segment. A ns-laser pumped singly resonant OPO was built, whose signal wavelength was tuned from 1.373 to 1.749μm (corresponding idler tuning range from 2.863 to 1.972μm) by varying the electric field from −6.5 to +5.0 kV/mm. The electro-optic tuning provided a fast wavelength selection method for the OPO within the wide infrared spectral range. |
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ISSN: | 0030-4018 1873-0310 |
DOI: | 10.1016/j.optcom.2019.125077 |