Back to the main page of this manual  Input reference of CP2K version 9.0 
CP2K_INPUT /
FORCE_EVAL /
DFT /
EFIELD
ENVELOP {Keyword} 

Shape of the efield pulse used in realtime propagation (RTP) calculations. [Edit on GitHub]  
This keyword cannot be repeated and it expects precisely one keyword.  
Default value:
CONSTANT 

List of valid keywords:

INTENSITY {Real} 

Intensity of the electric field. For realtime propagation (RTP) units are in W*cm2 which corresponds to a maximal amplitude in a.u. of sqrt(I/(3.50944*10^16)). For a constant local field in isolated system calclulations, units are in a.u.. [Edit on GitHub]  
This keyword cannot be repeated and it expects precisely one real.  
Default value:
0.00000000E+000 
PHASE {Real} 

Phase offset of the cosine given in multiples of pi. Used in realtime propagation (RTP) calculations. [Edit on GitHub]  
This keyword cannot be repeated and it expects precisely one real.  
Default value:
0.00000000E+000 
POLARISATION {Real} {Real} {Real} 

Polarisation vector of electric field [Edit on GitHub]  
This keyword cannot be repeated and it expects precisely 3 reals.  
Default values:
0.00000000E+000 0.00000000E+000 1.00000000E+000 
WAVELENGTH {Real} 

Wavelength of efield field for realtime propagation (RTP) calculations. [Edit on GitHub]  
This keyword cannot be repeated and it expects precisely one real.  
Default value:
0.00000000E+000 

Default unit:
[nm]

Back to the main page of this manual or the CP2K home page  (Last update: 24.6.2021) 