Practical Talbot wavemeter

• Autorzy: Suksawat Nattawut , Buathong Sitti , Deachapunya Sarayut

Identyfikatory

DOI

10.37190/oa230403

• Języki publikacji: EN

Abstrakty

EN

A wavemeter using the near-field Talbot diffraction is simplified. High accuracy wavelength measurement can be obtained from each spacing between two adjacent maximum intensities of the periodicity along multiples of the Talbot distance. Our experimental results are confirmed by our calculations. In contrast to the previous works, we use a diffraction grating with sufficiently large grating period. Therefore, the setup is practical and the pixel size of camera used to measure the interference pattern can be large. Moreover, the obtained Talbot patterns are sharp without using a post-image processing. According to our recent setup, we use the grating with a period of 12.5 μm. With visible light lasers, the Talbot distances are in the range of a few hundred of micrometers. These distances are much larger than a pixel size of normal camera. An external cavity diode laser with rubidium saturated absorption spectroscopy is used to calibrate our setup. High accuracy at 1 pm can be achieved.

Słowa kluczowe

EN

wavemeter; near-field effect; Talbot effect

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2023
• Tom: Vol. 53, nr 4
• Strony: 539--545
• Opis fizyczny: Bibliogr. 26 poz., rys.

Twórcy

autor

Suksawat Nattawut

• Department of Physics, Faculty of Science, Burapha University, ChonBuri Province, 20131, Thailand
• Quantum and Nano Optics Research Unit, Burapha University, ChonBuri Province, 20131, Thailand

autor

Buathong Sitti

• Department of Physics, Faculty of Science, Burapha University, ChonBuri Province, 20131, Thailand
• Quantum and Nano Optics Research Unit, Burapha University, ChonBuri Province, 20131, Thailand

autor

Deachapunya Sarayut

• Department of Physics, Faculty of Science, Burapha University, ChonBuri Province, 20131, Thailand
• Quantum and Nano Optics Research Unit, Burapha University, ChonBuri Province, 20131, Thailand
• Thailand Center of Excellence in Physics, Ministry of Higher Education, Science, Research and Innovation, 328 Si Ayutthaya Road, Bangkok 10400, Thailand

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).