Electro-optic THz dual-comb architecture for high-resolution, absolute spectroscopy
| Autor: | Cristina de Dios, Borja Jerez, Frederik Walla, Pablo Acedo, Pedro Martín-Mateos, Andrés Betancur |
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| Přispěvatelé: | European Commission, Ministerio de Economía y Competitividad (España), Ministerio de Educación, Cultura y Deporte (España) |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Spectrometer business.industry Terahertz radiation Absolute-frequency terahertz (THz) Local oscillator Physics::Optics 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Atomic and Molecular Physics and Optics 010309 optics Photomixing Injection locking Laser linewidth Frequency comb Optics Electro-optic modulators 0103 physical sciences Physics::Atomic Physics 0210 nano-technology Spectroscopy business Dual-frequency comb spectrometer |
| Zdroj: | e-Archivo: Repositorio Institucional de la Universidad Carlos III de Madrid Universidad Carlos III de Madrid (UC3M) e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid instname Optics Letters |
| Popis: | An absolute-frequency terahertz (THz) dual-frequency comb spectrometer based on electro-optic modulators for tunable, high-resolution, and real-time rapid acquisition is presented. An optical line of a master frequency comb (filtered via optical injection locking) serves as the seed to electro-optically generate a pair of new frequency combs (probe and local oscillator). Photomixing both combs with another coherent line from the same original master comb generates a narrow linewidth THz dual-comb with teeth frequencies that can be referenced to a radio-frequency standard. The system is validated with a proof-of-principle measurement of a microwave filter in the W-band. Ministerio de Economía y Competitividad (MINECO) (TEC2017-86271-R); Ministerio de Educación, Cultura y Deporte (MECD) FPU Program (FPU014/06338); H2020 European Research Council (ERC) (H2020-MSCAITN-2015). |
| Databáze: | OpenAIRE |
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