0.7 MW Yb:YAG pumped degenerate optical parametric oscillator at 2.06 μm

Li, Anni; Bahri, Mehran; Gray, Robert M.; Choi, Seowon; Hoseinkhani, Sajjad; Srivastava, Anchit; Marandi, Alireza; Fattahi, Hanieh

doi:10.1063/5.0230388

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0.7 MW Yb:YAG pumped degenerate optical parametric oscillator at 2.06 μm

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Li, Anni
Fattahi Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Bahri, Mehran
Fattahi Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Choi, Seowon
Fattahi Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Srivastava, Anchit
Fattahi Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Fattahi, Hanieh
Fattahi Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
Friedrich-Alexander-Universität Erlangen-Nürnberg, External Organizations;

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Citation

Li, A., Bahri, M., Gray, R. M., Choi, S., Hoseinkhani, S., Srivastava, A., et al. (2024). 0.7 MW Yb:YAG pumped degenerate optical parametric oscillator at 2.06 μm. APL Photonics, 9: 100808. doi:10.1063/5.0230388.

Cite as: https://hdl.handle.net/21.11116/0000-000F-9565-7

Abstract

Frequency comb and field-resolved broadband absorption spectroscopy are promising techniques for rapid, precise, and sensitive detection of short-lived atmospheric pollutants on-site. Enhancing detection sensitivity in absorption spectroscopy hinges on bright sources that cover molecular resonances and fast signal modulation techniques to implement lock-in detection schemes efficiently. Yb:YAG thin-disk lasers, combined with optical parametric oscillators (OPO), present a compelling solution to fulfill these requirements. In this work, we report on a bright OPO pumped by a Yb:YAG thin-disk Kerr-lens mode-locked oscillator delivering 2.8 W, 114 fs pulses at 2.06 {\mu}m with an averaged energy of 90 nJ. The OPO cavity operates at 30.9 MHz pulse repetition rates, the second harmonic of the pump cavity, allowing for broadband, efficient, and dispersion-free modulation of the OPO output pulses at 15.45 MHz rate. With 13% optical-to-optical conversion efficiency and a high-frequency intra-cavity modulation, this scalable scheme holds promise to advance the detection sensitivity and frontiers of field-resolved spectroscopic techniques.