Optical parametric amplification of spatiotemporal optical vortices
Abstract
Spatiotemporal optical vortices (STOVs) are structured light featuring a phase singularity in the spatiotemporal domain, exhibiting unique topology that couples spatial and temporal dimensions. To date, amplification of STOVs remains unexplored, and their wavelength tunability is limited by available light sources. In this work, we present the theoretical analysis and experimental demonstration of optical parametric amplification (OPA) of STOVs. The pulse energy of the STOV signal is enhanced by a factor of 60, while its spatiotemporal structure is robustly preserved. The generated idler inherits the phase-conjugated STOV topology with the opposite topological charge, governed by simultaneous conservation of energy, linear momentum, and spatiotemporal orbital angular momentum. The intrinsic wavelength-conversion capability of OPA further provides a route towards spectrally tunable STOV generation, spanning from visible to near-infrared wavelength regimes. This work paves the way toward further development of multi-stage amplification architectures, facilitating applications of wavelength-tunable spatiotemporally structured light at ultrahigh intensities.
Related
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- Coherent-feedback-enhanced nonreciprocal entanglement via directional optical parametric amplification
- Charge-Selective Displacement of Spatiotemporal Optical Vortices at a Spatially Uniform Time Boundary
- Analytic Solutions To Fully Quantized Parametric Amplification
- Full-band reciprocal parametric amplification in coupled oscillator arrays
BibTeX
@misc{teng2026optical,
title = {{Optical parametric amplification of spatiotemporal optical vortices}},
author = {Houan Teng and Chenhao Wan and Qiwen Zhan},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.18203},
eprint = {2610.18203},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.18203},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Optical parametric amplification of spatiotemporal optical vortices
AU - Houan Teng
AU - Chenhao Wan
AU - Qiwen Zhan
PY - 2026
DA - 2026/10/13
PB - arXiv
DO - 10.48550/arxiv.2610.18203
UR - https://arxiv.org/abs/2610.18203
AB - Spatiotemporal optical vortices (STOVs) are structured light featuring a phase singularity in the spatiotemporal domain, exhibiting unique topology that couples spatial and temporal dimensions. To date, amplification of STOVs remains unexplored, and their wavelength tunability is limited by available light sources. In this work, we present the theoretical analysis and experimental demonstration of optical parametric amplification (OPA) of STOVs. The pulse energy of the STOV signal is enhanced by a factor of 60, while its spatiotemporal structure is robustly preserved. The generated idler inherits the phase-conjugated STOV topology with the opposite topological charge, governed by simultaneous conservation of energy, linear momentum, and spatiotemporal orbital angular momentum. The intrinsic wavelength-conversion capability of OPA further provides a route towards spectrally tunable STOV generation, spanning from visible to near-infrared wavelength regimes. This work paves the way toward further development of multi-stage amplification architectures, facilitating applications of wavelength-tunable spatiotemporally structured light at ultrahigh intensities.
ER -