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| Format: | Preprint |
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2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2410.05010 |
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| _version_ | 1866913535568642048 |
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| author | Sanchez, A. D. Kumar, S. Chaitanya Ebrahim-Zadeh, M. |
| author_facet | Sanchez, A. D. Kumar, S. Chaitanya Ebrahim-Zadeh, M. |
| contents | We report a novel configuration of bulk $χ^{(2)}$ optical parametric oscillator (OPO) capable of delivering coherent broadband phase-locked spectrum when driven by a continuous-wave (cw) pump laser. By deploying an electro-optic modulator (EOM) internal to a degenerate cw OPO based on MgO:sPPLT or MgO:PPLN and implementing intracavity dispersion control, we show that output spectra extending over 9 nm (119 nm) with well-defined phase coherence can be generated. Pumping the cw OPO at 532~nm (1550~nm) for degenerate operation in the normal (anomalous) dispersion regime at 1064~nm (3100~nm), and using the coupled-wave equations to simulate the OPO in the presence of intracavity dispersion compensation, we demonstrate that this device offers a new alternative for $χ^{(2)}$-based frequency comb generation. We also show that in the time domain the output of such a device corresponds to femtosecond quadratic solitons in both dispersion regimes. The described concept is generic, paving the way for the realization of a new class of coherent broadband frequency comb sources in different spectral regions based on $χ^{(2)}$ OPOs pumped by cw lasers. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_05010 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quadratic frequency comb based on phase-modulated cw-driven optical parametric oscillator with intracavity dispersion control Sanchez, A. D. Kumar, S. Chaitanya Ebrahim-Zadeh, M. Optics We report a novel configuration of bulk $χ^{(2)}$ optical parametric oscillator (OPO) capable of delivering coherent broadband phase-locked spectrum when driven by a continuous-wave (cw) pump laser. By deploying an electro-optic modulator (EOM) internal to a degenerate cw OPO based on MgO:sPPLT or MgO:PPLN and implementing intracavity dispersion control, we show that output spectra extending over 9 nm (119 nm) with well-defined phase coherence can be generated. Pumping the cw OPO at 532~nm (1550~nm) for degenerate operation in the normal (anomalous) dispersion regime at 1064~nm (3100~nm), and using the coupled-wave equations to simulate the OPO in the presence of intracavity dispersion compensation, we demonstrate that this device offers a new alternative for $χ^{(2)}$-based frequency comb generation. We also show that in the time domain the output of such a device corresponds to femtosecond quadratic solitons in both dispersion regimes. The described concept is generic, paving the way for the realization of a new class of coherent broadband frequency comb sources in different spectral regions based on $χ^{(2)}$ OPOs pumped by cw lasers. |
| title | Quadratic frequency comb based on phase-modulated cw-driven optical parametric oscillator with intracavity dispersion control |
| topic | Optics |
| url | https://arxiv.org/abs/2410.05010 |