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Entry   Telescope to match Koheras with minicav, posted by Manar Amer at Other about lasers and optics 
    Reply   Telescope to match Koheras with minicav, posted by Manar Amer at Other about lasers and optics 
Message ID: 13     Entry time: Thu Apr 22 16:59:12 2021     In reply to: 12
 Author: Manar Amer 
 Status: Fixed 
 Type: report 
 Category: lasers and optics 
 Location: Other 
 Title: Telescope to match Koheras with minicav 

The telescope to adjust the beam size was made only using one lens with very long focal length (1 meter)

it is placed a distance of 40 cm from the collimeter and 1 meter from the center of the beam waist between the planar mirrors.

This way the two beam (of laser and cavity) have the shape when they propagate

 

(                              )                                /-----------()------- 40 cm ----------(collimater)_______[Koheras]

                                                                |

\                w|--------------/-------100 cm -------------/

 

Manar Amer wrote:

The beam waist of the Koheras CW laser after the collimater is bigger than the Waist required for injection inside the cavity at M1.

A Telescope is to be made to match the two beams.

Details will be added ......

 

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