[Octopus-users] laser output file has zero output/TDLasers or TDExternalFields

[Emily]

p.s. I'm using octopus version 2.1.0.  Is that an old version that has a
bug around this?


----- Original message -----
From: "Emily" <listemily at eml.cc>
To: "Alberto Castro" <alberto.castro at tddft.org>
Cc: "octopus users group" <octopus-users at tddft.org>
Date: Wed, 05 Aug 2009 16:43:29 -0400
Subject: Re: [Octopus-users] laser output file has zero output/TDLasers
or TDExternalFields

Hi Alberto, Jeff & others,

Yes, I believe I'm using TDExternalField in the same manner as Jeff's
example, and I'm definitely getting zeros in my lasers file.  Here are
the relevant lines from my inp file:

omega = 0.173 
amplitude = 0.1

%TDExternalField
 electric_field | 0 | 1 | 0 | omega | "continuous_wave"
%

%TDFunctions
 "continuous_wave" | tdf_cw | amplitude
%

Its clearly doing something to the charge distribution.

Any idea what's going wrong?

Thanks very much!
Emily

----- Original message -----
From: "Alberto Castro" <alberto.castro at tddft.org>
To: "Emily" <listemily at eml.cc>
Cc: "octopus users group" <octopus-users at tddft.org>
Date: Sat, 1 Aug 2009 10:51:23 +0200 (CEST)
Subject: Re: [Octopus-users] laser output file has zero output/TDLasers
or TDExternalFields


Hi Emily,

TDLasers is obsolete, so it will only work in older version. The pair
"TDExternalFields" and "TDFunctions" is the correct procedure
now. Jeff has sent a good example.

If you are still getting zeroes, please send you input options to the
list so that somebody can figure out what's wrong.

And thanks for the hint about google...

Cheers, Alberto.

On Fri, 31 Jul 2009, Emily wrote:

> Hello Octopus Users,
>
> I'm trying to put an oscillating electric field on my system.  I used
> the block TDExternalFields, and the program ran and the charge density
> definitely looked different than with no field, so something happenned.
> But I also used TDOutput = lasers, and got a file td.general/laser that
> shows zeros in every field except the time and iteration number.  So I
> googled the users group archive and found somebody else who's laser
> fields were all zero, and it was recommended that they use TDLasers
> instead of TDExternalFields.  But apparently the syntax has changed
> between these two variables, and I couldn't find any documentation for
> how to use the obsolete variable TDLasers.
>
> Can anybody tell me how to make TDExternalFields and/or TDOutput to work
> correctly to print out the laser field?
>
> Or, if that's not possible, can somebody tell me how to use the obsolete
> variable TDLasers?
>
> Thanks very much,
> Emily
>
> p.s.  Perhaps not everybody has yet realized this, but you can do a
> google search such as
> TDLasers  site:tddft.org
> and since the user group archives are available in this domain it will
> search the archives, tutorial, manual and anything else on the site all
> at once.
>
> _______________________________________________
> Octopus-users mailing list
> Octopus-users at tddft.org
> http://www.tddft.org/mailman/listinfo/octopus-users
>

======================================================================
Dr. Alberto Castro

Institut fur Theoretisch Physik, Freie Universitat Berlin.
Arnimallee, 14, Berlin 14195 (Deutschland)

Tel:   +49 30 83853028
Fax:   +49 30 83855258
skype: alberto_c_barrigon
email: alberto at physik.fu-berlin.de
======================================================================