TY - JOUR
T1 - TO-phonon anisotropies in a highly doped InP (001) grating structure
AU - Espinosa-Cuellar, L. D.
AU - Lastras-Martínez, L. F.
AU - Balderas-Navarro, R. E.
AU - Castro-García, R.
AU - Lastras-Martínez, A.
AU - Flores-Camacho, J. M.
AU - Panah, Mohammad Esmail Aryaee
AU - Semenova, Elizaveta
AU - Lavrinenko, Andrei V.
N1 - Publisher Copyright:
© 2021 Author(s).
PY - 2021/10/4
Y1 - 2021/10/4
N2 - For zinc blende semiconductors, such as InP, the Raman selection rules for a backscattering configuration from the (001) surface forbid the transversal optical (TO) phonon mode, whereas the longitudinal optical mode is allowed. However, when InP is highly doped with Si atoms, InP-Si clusters with the reduced C3v symmetry allow TO modes in the Raman spectrum with the backscattering configuration. Here, we demonstrate that the amplitude of the TO modes can be modulated spatially by using a highly doped InP grating. By exciting the sample with a laser linearly polarized parallel and perpendicular to the grating grooves, we observe a change in amplitude of the phonon optical response for the TO mode.
AB - For zinc blende semiconductors, such as InP, the Raman selection rules for a backscattering configuration from the (001) surface forbid the transversal optical (TO) phonon mode, whereas the longitudinal optical mode is allowed. However, when InP is highly doped with Si atoms, InP-Si clusters with the reduced C3v symmetry allow TO modes in the Raman spectrum with the backscattering configuration. Here, we demonstrate that the amplitude of the TO modes can be modulated spatially by using a highly doped InP grating. By exciting the sample with a laser linearly polarized parallel and perpendicular to the grating grooves, we observe a change in amplitude of the phonon optical response for the TO mode.
U2 - 10.1063/5.0062251
DO - 10.1063/5.0062251
M3 - Journal article
AN - SCOPUS:85116904896
SN - 0003-6951
VL - 119
JO - Applied Physics Letters
JF - Applied Physics Letters
IS - 14
M1 - 141102
ER -