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Direct observation of bulk second-harmonic generation inside a glass slide with tightly focused optical fields
Wang, Xianghui Fardad, Shima Das, Susobhan Slandrino, Alessandro Hui, Rongqing
Wang, Xianghui
Fardad, Shima
Das, Susobhan
Slandrino, Alessandro
Hui, Rongqing
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Abstract
Bulk second-harmonic generation (SHG) inside glass slides is directly detected unambiguously without interference from surface contributions. This is enabled by tightly focused and highly localized ultrashort laser pulses. The theoretical calculations based on vector diffraction theory and the phenomenological model of SHG inside centrosymmetric materials agree well with the measured far-field SHG radiation patterns for different polarization states of the fundamental beam. The results indicate that the observed bulk SHG is predominantly related to the bulk parameter δ′ and originates from the three-dimensional field gradient in the focal region.
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Date
2016-04-18
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Publisher
American Physical Society
Research Projects
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Keywords
Geometrical and wave optics, Optical materials and elements, Glasses, Optical second-harmonic generation
Citation
Wang, X., Fardad, S., Das, S., Salandrino, A., & Hui, R. (2016). Direct observation of bulk second-harmonic generation inside a glass slide with tightly focused optical fields. Physical Review B, 93(16). doi:10.1103/physrevb.93.161109