Hi Jing,

Thanks for your post here!

The power is normalized with respect to the excitation power.

The correct file format looks like below:

! File Format:
! L1:    N, M, U
! L2:    EXW1, EXW2, ..., EXWM   
! L3:    EMW1, P1, P2, ..., PM
! L4:    EMW2, P1, P2, ..., PM
! L2+N:  EMWN, P1, P2, ..., PM
!
! Where:
! N = Number of emission wavelengths
! M = Number of excitation wavelengths
! U = Wavelength unit flag (1=nm, ???)
! EXWi = Excitation wavelength i
! EMWi = Emission wavelength i
! Pi = Normalized power for EXWi

You may find more info about this in the Help files at:
The Setup Tab > Editors Group (Setup Tab) > Non-sequential Component Editor > Object Properties (non-sequential component editor) > Volume Physics > Phosphors & Fluorescence

For further references, please check out the following knowledgebase articles:

Overview of photoluminescence simulation in OpticStudio

Modeling Photoluminescence in OpticStudio: A Photoluminescent Solar Concentrator

If you have further questions, please let us know and we will be happy to help!

Best,

Csilla