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arXiv · 1502.06070

Linearly polarized remote-edge luminescence in GaSe nanoslabs

Yanhao Tang·Wei Xie·Krishna C. Mandal·John A. McGuire·Chih-Wei Lai
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Abstract

We report highly linearly polarized remote luminescence that emerges at the cleaved edges of nanoscale gallium selenide slabs tens of micrometers away from the optical excitation spot. The remote-edge luminescence (REL) measured in the reflection geometry has a degree of linear polarization above 0.90, with polarization orientation pointing toward the photoexcitation spot. The REL is dominated by an index-guided optical mode that is linearly polarized along the crystalline $c$-axis. This luminescence is from out-of-plane dipoles that are converted from in-plane dipoles through a spin-flip process at the excitation spot.

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Yanhao Tang, Wei Xie, Krishna C. Mandal, John A. McGuire, Chih-Wei Lai. 2015-02-21. Linearly polarized remote-edge luminescence in GaSe nanoslabs. https://doi.org/10.1103/physrevapplied.4.034008

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