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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.

 

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Tableau_polar.PNG
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