High visibility first-order subwavelength interference based on light pulse storage via electromagnetically induced transparency

We achieved high visibility first-order subwavelength interference based on light pulse storage and retrieval technique via electromagnetically induced transparency (EIT) effect in a Pr 3+ :Y 2 SiO 5 crystal. The interference field distribution of a double-slit was first stored in a Pr 3+ :Y 2 SiO 5...

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Veröffentlicht in:Scientific reports 2017-05, Vol.7 (1), p.2361-8, Article 2361
Hauptverfasser: Li, Zhixiang, Liu, Jianji, Fan, Hongming, Liu, Jiachen, Zhang, Guoquan
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Sprache:eng
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Zusammenfassung:We achieved high visibility first-order subwavelength interference based on light pulse storage and retrieval technique via electromagnetically induced transparency (EIT) effect in a Pr 3+ :Y 2 SiO 5 crystal. The interference field distribution of a double-slit was first stored in a Pr 3+ :Y 2 SiO 5 crystal based on EIT effect, and then it was read out by a spatially modulated readout beam. The retrieved output field is proportional to the product of the input interference field of the double-slit and the spatially modulated readout field. High visibility first-order subwavelength interference with an effective wavelength of λ / n , where λ is the wavelength of the input light field and n is any positive integer, can be obtained by designing the spatial modulation structure of the readout field. Experimentally, first-order subwavelength interference with an effective wavelength of λ /3 and a visibility of 67% were demonstrated. Such first-order subwavelength interference has important applications on high resolution optical lithography.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-02504-7