Applications of Spectral Interferometry in sub-THz, Infrared and Optical Frequency Ranges

Autor(es)

Lukin, Konstantin ; Tatyanko, Dmytro ; Lukin, Sergii ; IEEE

• Tipo de documento: Artigo Científico
• Fonte: 2023 INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS, OMN AND SBFOTON INTERNATIONAL OPTICS AND PHOTONICS CONFERENCE, SBFOTON IOPC; v. N/A, p. 2-pg., 2023-01-01.

Resumo

The paper presents some results of the noise spectral interferometry (SI) for precise distance measurements in sub-THz Infra-Red and optical bands using low-coherence optical sources beyond their coherence zone. It is shown that when the path difference in Michelson interferometer exceeds the coherence length of the light-emitting diode radiation, the pattern of interference in spectral domain enables to perform absolute measurements of micro- and nano-distances due to its dependence on both time delay and relative phase of the signals. (AU)

• Processo FAPESP: 22/11397-8 - Sistema SAR transportado por drone com pulso de ruído e frequência e atraso escalonados para mapeamentos de superfície e tomográfico de solo e do corpo humano
• Beneficiário: Hugo Enrique Hernández Figueroa
• Modalidade de apoio: Auxílio à Pesquisa - Pesquisador Visitante - Internacional