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Temporal walk-off induced dissipative quadratic solitons

Roy, Arkadev and Nehra, Rajveer and Jahani, Saman and Ledezma, Luis and Langrock, Carsten and Fejer, Martin and Marandi, Alireza (2022) Temporal walk-off induced dissipative quadratic solitons. Nature Photonics, 16 (2). pp. 162-168. ISSN 1749-4885. doi:10.1038/s41566-021-00942-4.

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A plethora of applications have recently motivated extensive efforts regarding the generation of Kerr solitons and coherent frequency combs. However, the Kerr (cubic) nonlinearity is inherently weak. By contrast, strong quadratic nonlinearity in optical resonators is expected to provide a promising alternative means for soliton formation. Here we demonstrate dissipative quadratic soliton formation via non-stationary optical parametric amplification in the presence of pronounced temporal walk-off between pump and signal, leading to half-harmonic generation accompanied by a substantial pulse compression (exceeding a factor of 40) supported at low pump pulse energies (~4 pJ). The quadratic soliton forms in a low-finesse cavity in both normal and anomalous dispersion regimes. We present a route to considerably improve the performance of the demonstrated quadratic soliton when extended to an integrated platform to realize highly efficient extreme pulse compression, leading to the formation of few-cycle soliton pulses starting from ultra-low-energy picosecond-scale pump pulses.

Item Type:Article
Related URLs:
URLURL TypeDescription ReadCube access Paper
Roy, Arkadev0000-0001-5659-8388
Nehra, Rajveer0000-0002-0165-2188
Jahani, Saman0000-0003-4831-2276
Ledezma, Luis0000-0002-0365-1672
Langrock, Carsten0000-0002-2947-5312
Fejer, Martin0000-0002-5512-1905
Marandi, Alireza0000-0002-0470-0050
Additional Information:© The Author(s), under exclusive licence to Springer Nature Limited 2022. Received 09 June 2021; Accepted 01 December 2021; Published 31 January 2022. We acknowledge support from AFOSR award no. FA9550-20-1-0040 (to A.M.), NSF grant no. 1846273 (to A.M.) and NASA (to A.M.). We also thank NTT Research for their financial and technical support. We thank R. Gray for his valuable input. Data availability: The data that support the plots within this paper are available at Code availability: The codes that support the findings of this study are available from the corresponding author upon reasonable request. Author Contributions: A.R. performed the experiments with help from R.N. A.R. and L.L. developed the theory and performed the numerical simulations. C.L. fabricated the PPLN waveguide used in the experiment, with supervision from M.F. All authors contributed to analysis of the results. A.R. and A.M. wrote the manuscript with input from all authors. A.M. supervised the project. The authors declare no competing interests. Peer review information: Nature Nanotechnology thanks the anonymous reviewers for their contribution to the peer review of this work.
Funding AgencyGrant Number
Air Force Office of Scientific Research (AFOSR)FA9550-20-1-0040
Subject Keywords:Frequency combs; Nonlinear optics; Solitons; Ultrafast photonics
Issue or Number:2
Record Number:CaltechAUTHORS:20211018-185256138
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Official Citation:Roy, A., Nehra, R., Jahani, S. et al. Temporal walk-off induced dissipative quadratic solitons. Nat. Photon. 16, 162–168 (2022).
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111528
Deposited By: George Porter
Deposited On:18 Oct 2021 23:09
Last Modified:17 Feb 2022 22:36

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