Large tunable lateral shift in prism coupling system containing a superconducting slab

A large and tunable lateral shift in a prism coupling system with a superconducting YBa 2 Cu 3 O 7 film is theoretically analyzed. The dip of the reflectivity and magnitude of the lateral shift can be controlled by the temperature of the superconducting film. The sign of the lateral shift can be det...

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Bibliographic Details
Published in:Applied physics. B, Lasers and optics Lasers and optics, 2020-06, Vol.126 (6), Article 108
Main Authors: Kang, Yongqiang, Feng, Caixia, Luo, Changyou
Format: Article
Language:English
Subjects:
Applied physics
Coupling
Engineering
Gaussian beams (optics)
Incident light
Lasers
Microscopes
Optical Devices
Optics
Photonics
Physical Chemistry
Physics
Physics and Astronomy
Quantum Optics
Superconductivity
Thickness
YBCO superconductors
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Summary:A large and tunable lateral shift in a prism coupling system with a superconducting YBa 2 Cu 3 O 7 film is theoretically analyzed. The dip of the reflectivity and magnitude of the lateral shift can be controlled by the temperature of the superconducting film. The sign of the lateral shift can be determined by the thickness of the superconducting film. The position of the minimum reflection and maximum Goos–Hänchen shift can be conveniently adjusted by the thickness of the dielectric layer and incident light frequency. The largest shift, as high as 1550 times the free space wavelength, is achieved for the incident light frequency ω = 98 THz. The numerical calculation results from the Gaussian beam are in accordance with the theoretical results.
ISSN:0946-2171
1432-0649
DOI:10.1007/s00340-020-07463-y