Nonlinear optics is of fundamental importance for frequency conversion and nonlinear optical spectroscopy. For instance, the second harmonic (SH) and terahertz (THz) generations are commonly utilized as frequencyconversion methodologies, and they are also employed as spectroscopic approaches. SH is generated through frequency doubling and THz through optical rectification (OR) in beta-barium borate (BBO). Although the frequency doubling and OR are second-order nonlinear optical processes resulting from the same second-order susceptibility tensor, these two processes generate waves in totally different wavelength ranges. It is also interesting to find out other differences between these two nonlinear optical processes. This paper theoretically and experimentally investigates how phase matching affects the SH and THz generations. The theoretical results successfully explain the experimental ones.

Phase-matching effect on the second harmonic and terahertz generations in β-barium borate / Xu, Z.; Mou, S.; Tomarchio, L.; D'Arco, A.; Guo, K.; Petrarca, M.; Lupi, S.. - In: OPTICS AND LASER TECHNOLOGY. - ISSN 0030-3992. - 167:(2023). [10.1016/j.optlastec.2023.109764]

Phase-matching effect on the second harmonic and terahertz generations in β-barium borate

Tomarchio L.;D'Arco A.;Petrarca M.;Lupi S.
2023

Abstract

Nonlinear optics is of fundamental importance for frequency conversion and nonlinear optical spectroscopy. For instance, the second harmonic (SH) and terahertz (THz) generations are commonly utilized as frequencyconversion methodologies, and they are also employed as spectroscopic approaches. SH is generated through frequency doubling and THz through optical rectification (OR) in beta-barium borate (BBO). Although the frequency doubling and OR are second-order nonlinear optical processes resulting from the same second-order susceptibility tensor, these two processes generate waves in totally different wavelength ranges. It is also interesting to find out other differences between these two nonlinear optical processes. This paper theoretically and experimentally investigates how phase matching affects the SH and THz generations. The theoretical results successfully explain the experimental ones.
2023
Second harmonic; Terahertz; Phase matching; Index ellipsoid
01 Pubblicazione su rivista::01a Articolo in rivista
Phase-matching effect on the second harmonic and terahertz generations in β-barium borate / Xu, Z.; Mou, S.; Tomarchio, L.; D'Arco, A.; Guo, K.; Petrarca, M.; Lupi, S.. - In: OPTICS AND LASER TECHNOLOGY. - ISSN 0030-3992. - 167:(2023). [10.1016/j.optlastec.2023.109764]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1685483
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