Highly efficient, high average power, narrowband, pump-tunable BWOPO - Institut d'Optique Graduate School Access content directly
Journal Articles Optics Letters Year : 2023

Highly efficient, high average power, narrowband, pump-tunable BWOPO

Abstract

We demonstrate a continuously tunable mid-infrared source that produces narrowband radiation at 1981 nm and 2145 nm based on a tunable Yb-based hybrid MOPA pump and a backward-wave optical parametric oscillator (BWOPO). The BWOPO employs a PPRKTP crystal with 580 nm domain periodicity. The BWOPO has a record-low oscillation threshold of 19.2 MW/cm2 and generates mJ level output with an overall efficiency exceeding 70%, reaching an average power of 5.65W at the repetition rate of 5 kHz. The system is mechanically robust and optical cavity-free, making it suitable for spectroscopic systems on mobile platforms. The mid-infrared signal frequency is tuned by pump tuning with a linear pump-to-signal frequency translation rate close to the predicted 1 to 1.001 Hz/Hz.
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Dates and versions

hal-04435015 , version 1 (02-02-2024)

Identifiers

Cite

Kjell Martin Mølster, Marie Guionie, Patrick Mutter, Antoine Zheng, Jean-Baptiste Dherbecourt, et al.. Highly efficient, high average power, narrowband, pump-tunable BWOPO. Optics Letters, 2023, 48 (24), pp.6484-6487. ⟨10.1364/OL.506647⟩. ⟨hal-04435015⟩
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