𝜒(2) frequency comb generation based on optical parametric oscillation in a lithium niobate microresonator

Nicolás Amiune; Karsten Buse; Ingo Breunig

doi:10.1117/12.2607630

4 March 2022 χ⁽²⁾ frequency comb generation based on optical parametric oscillation in a lithium niobate microresonator

Nicolás Amiune, Karsten Buse, Ingo Breunig

Proceedings Volume 11987, Laser Resonators, Microresonators, and Beam Control XXIV; 119870A (2022) https://doi.org/10.1117/12.2607630
Event: SPIE LASE, 2022, San Francisco, California, United States

Abstract

Microresonator frequency combs have rapidly evolved in the last years and have become a hot topic in integrated photonics. These combs are typically generated relying on the χ⁽³⁾ nonlinearity via degenerate and non-degenerate four wave mixing. More recently, the idea of comb generation based on the χ⁽²⁾ nonlinearity has also started to be explored as it might provide new potential benefits like accesing new wavelength ranges. In this direction, we investigate the generation of χ⁽²⁾ frequency combs based on optical parametric oscillation in a lithium niobate whispering gallery resonator. By pumping at 532 nm and driving the optical parametric oscillation to degeneracy at 1064 nm, we observe two 1-THz-wide combs centered around these wavelengths. This scheme can directly be transferred to other materials to generate combs in the mid-IR region by pumping at telecom wavelengths.

Conference Presentation

Citation Download Citation

Nicolás Amiune, Karsten Buse, and Ingo Breunig "χ⁽²⁾ frequency comb generation based on optical parametric oscillation in a lithium niobate microresonator", Proc. SPIE 11987, Laser Resonators, Microresonators, and Beam Control XXIV, 119870A (4 March 2022); https://doi.org/10.1117/12.2607630

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