<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>Dear Gate users,<br></div><div><br data-mce-bogus="1"></div><div>We are working on dosimetry in photodynamic therapy and I would therefore like to fluoresce a molecule (chlorine or porphyrin) from visible photons.<br>If I understand correctly, I need to modify the "materials.xml" file by adding </div><div>the absorbance peaks of my molecules (WLSABSLENGTH?) but I cannot make the link between the absorbance measurement in M-1.cm-1 and the cm indicated...</div><div>the emission spectrum (WLSCOMPONENT?)<br><br>How can we observe the emission of fluorescence photons and not the excitation photons?<br><br>Many thanks for your help,</div><div>Best regards,</div><div><br data-mce-bogus="1"></div><div>Sarah Blind and Joël Daouk<br data-mce-bogus="1"></div></div></body></html>