Management of thermal effects in high-repetition-rate pulsed optical parametric oscillators |
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Authors: | Godard Antoine Raybaut Myriam Schmid Thomas Lefebvre Michel Michel Anne-Marie Péalat Michel |
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Affiliation: | ONERA-the French Aerospace Lab, Chemin de la Hunière, F-91761 Palaiseau Cedex, France. antoine.godard@onera.fr |
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Abstract: | We report on the investigation of thermal effects in high-repetition-rate pulsed optical parametric oscillators emitting in the mid-IR. We find that the thermal load induced by the nonresonant idler absorption plays a critical role in the emergence of thermally induced bistability. We then demonstrate a significant improvement of the conversion efficiency (more than 30%) when a proper axial temperature gradient is applied to the nonlinear crystal by use of a two-zone temperature-controlled oven. |
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