calculation of the absorption spectra: control of the polarization

Deals with issues related to computation of optical spectra, in RPA (-o c) or by solving the Bethe-Salpeter equation (-o b). Includes local field effects, excitons, etc.

Moderators: Davide Sangalli, andrea marini, Daniele Varsano, andrea.ferretti, myrta gruning, Conor Hogan

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sabrine
Posts: 5
Joined: Tue Apr 26, 2022 3:05 pm
Location: Paris , France

calculation of the absorption spectra: control of the polarization

Post by sabrine » Mon Jun 13, 2022 2:16 pm

Dear developers

I would like to calculate the absorption spectra for left and right orientation of circular polarization of the pumb laser for 2d materials.

Does Yambo calculate /control the circularly polarized absorption for 2D materials .


Thanks
Sabrine .
Dr.Sabrine Ayari
Laboratoire de Physique de lÉcole normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité, Paris, France

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Davide Sangalli
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Re: calculation of the absorption spectra: control of the polarization

Post by Davide Sangalli » Wed Jun 22, 2022 3:31 pm

Yambo can compute epsilon_xx and epsilon_xy. (or alpha_xx and alpha_xy)
From that you can extract the absorption of circularly polarized light.

Just set

Code: Select all

BSEprop="abs kerr"
in your bse run.

You will get two files:
- .epsilon or .alpha for the diagonal components
- .off or .beta for the off-diagonal components

See also here for more details:
viewtopic.php?p=11642#p11642

Best,
D.
Davide Sangalli, PhD
CNR-ISM, Division of Ultrafast Processes in Materials (FLASHit) and MaX Centre
https://sites.google.com/view/davidesangalli
http://www.max-centre.eu/

sabrine
Posts: 5
Joined: Tue Apr 26, 2022 3:05 pm
Location: Paris , France

Re: calculation of the absorption spectra: control of the polarization

Post by sabrine » Fri Jun 24, 2022 11:14 am

Dear Davide Sangalli,
Thanks alot for your help .
sabrine.
Dr.Sabrine Ayari
Laboratoire de Physique de lÉcole normale supérieure, ENS, Université PSL, CNRS, Sorbonne Université, Université Paris-Diderot, Sorbonne Paris Cité, Paris, France

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