Journal
OPTICS LETTERS
Volume 46, Issue 21, Pages 5312-5315Publisher
OPTICAL SOC AMER
DOI: 10.1364/OL.441696
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Funding
- National Key Research and Development Program of China [2017YFF0206104]
- National Natural Science Foundation of China [61904176]
- Beijing Nova Program [Z181100006218007]
- Shaanxi Key RD Program [20201102013]
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This study investigates the self-frequency shift of continuously pumped Kerr solitons in AlN-on-sapphire microcavities with narrower Raman gain bandwidths than the cavity free-spectral range. The research highlights the differences in self-frequency shift characteristics between amorphous material microcavities. The findings emphasize the impact of frequency detuning between cavity resonances and Raman gain peaks, as well as the importance of all three Raman gain peaks.
We study the self-frequency shift of continuously pumped Kerr solitons in AlN-on-sapphire microcavities with Raman gain bandwidths narrower than the cavity free-spectral range. Solitons are generated in similar to 230 GHz microcavities via high-order mode dispersion engineering. The dependence of the self-frequency shift on soliton pulse width is measured and differs from amorphous material microcavities. Our measurement and simulation reveal the impact of frequency detuning between the cavity resonances and Raman gain peaks, as well as the importance of all three Raman gain peaks. The interplay between the Raman effect and dispersive wave recoil and a potential quiet point are also observed. (C) 2021 Optical Society of America
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