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Polarization dependent Phonon assisted PL
Posted: Mon Apr 20, 2026 2:57 pm
by rishabhsrsw7
Hi everyone,
Is there a way to calculate the phonon-assisted PL for circularly polarized light?
Regards
Rishabh
Re: Polarization dependent Phonon assisted PL
Posted: Mon May 18, 2026 11:12 am
by palful
Dear Rishabh,
In principle, the luminescence spectrum should be averaged over the photon polarization directions.
However, if you want to isolate the contribution of a specific outgoing polarization, I think you can perform a yambo BSE calculation with circularly polarized light, and then calculate the phonon-assisted emission using the projected exciton dipoles that you obtained from the BSE.
The procedure is the same as outlined in this tutorial, but when calling the `exc_ph_luminescence` function, the argument `exc_dipoles` should be the projected dipoles from the BSE database (read with YamboDipolesDB) and not those coming from the `exc_ph_get_inputs` function, which are unpolarized.
Best,
Fulvio