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Entry   Polarisation Results of the NKT, posted by Blanc at Optical room about lasers and optics Ellipsicité_NKT.PNGPolar_horizontale_fonction_pussance_NKT.PNGPolar_verticale_fonction_pussance_NKT.PNGPolarisation_Ag_VS_Diélec.PNG
    Reply   Polarisation Results of the NKT, posted by Blanc at Optical room about lasers and optics Tableau_polar.PNG
Message ID: 19     Entry time: Wed Sep 8 10:50:38 2021     In reply to: 17
 Author: Blanc 
 Status: Fixed 
 Type: info 
 Category: lasers and optics 
 Location: Optical room 
 Title: Polarisation Results of the NKT 

To have the polarisation, we must have 1 value because the laser in entry of the system has 1 polar. Due to that, the graphe of the ellipticity is not true, it is the mean value on the following table which shows the ellipticity and the polarization.

Blanc wrote:

I made many tests about polarization and we can see some points thanks to the following figures :

1- The ellipsicity of the NKT is near to 0 (between -0,2 and 0,2) which means the polarization is rectilinear horizontale (attachement 1).

2- The power of the NKT has no influence on the polarization, verticale or horizontale (attachement 2 and 3).

3- The polarization is not changed by the type of mirror (Ag or Diélec) (attachement 4)

The next step is to measure the polarization after the cavity to know the ellipsicity.

 

Attachment 1: Tableau_polar.PNG  6 kB  | Show | Show all
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