Tunable mid-infrared optical parametric oscillator with intracavity parametric amplification based on a dual-grating PPLN crystal |
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| Authors: | A Godard M Raybaut M Lefebvre A-M Michel M Péalat |
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| Institution: | 1. ONERA-The French Aerospace Lab, BP 80100, 91123, Palaiseau Cedex, France
2. SAGEM D??fense S??curit??, Groupe SAFRAN, Iliade, 23 Avenue Carnot, 91344, Massy cedex, France
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| Abstract: | Intracavity amplification of the idler radiation of a nanosecond optical parametric oscillator (OPO) is achieved within a single dual-grating PPLN crystal composed of a uniform-grating section followed by a fan-out grating section. While all the OPO wavelength-tuning capabilities are preserved, this configuration leads to a 60?% increase of the 4-??m idler power and a significant beam quality improvement when compared to a conventional singly resonant OPO. |
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