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Entry   Cavity Lock , posted by Manar Amer at Optical room about lasers and optics | detectors and electronics | software Screenshot_2022-05-30_0_125247.png20220530_00_Mode.bmp11.bmp
    Reply   Cavity Lock , posted by Manar Amer at Optical room about lasers and optics | detectors and electronics | software 20220607_SBox_Setup.pngMa1_Ma2_Horizontal_end-of-day.jpgMa1_Ma2_Vertical_end-of-day.jpg
       Reply   Cavity Lock , posted by Manar Amer at Optical room about lasers and optics | detectors and electronics | software 00_Mode_Locked_Under_vacuum.bmpMa1_Ma2_Horizontal_end-of-day.jpgMa1_Ma2_Vertical_end-of-day.jpg
          Reply   Cavity Lock , posted by Manar Amer at Optical room about lasers and optics | detectors and electronics | software 
Message ID: 97     Entry time: Wed Jun 8 11:31:47 2022     In reply to: 95     Reply to this: 98
 Author: Manar Amer 
 Status: Fixed 
 Type: report 
 Category: lasers and optics | detectors and electronics | software 
 Location: Optical room 
 Title: Cavity Lock  

Current setup at SBox for locking the cavity

After spacial matching, the coupling increased to ~ 15 - 20 % 

The locking was done for the fundamental mode, tried to improve the coupling with the motors, but the lock is very unstable to be investigated. (Note: the cavity in under normal pressure)

Manar Amer wrote:

Start with the cavity lock images attached, taken from last week, at start we have a coupling ~ 5%  and started improving on the alignment .

The image of 00 modes attached corresponds to the coupling seen on the oscilloscope.

We have a higher coupling with the 11 mode due to the size of the injected beam in comparison to mode

lenses were added to improve it.

 

Attachment 1: 20220607_SBox_Setup.png  66 kB  | Hide | Hide all
20220607_SBox_Setup.png
Attachment 2: Ma1_Ma2_Horizontal_end-of-day.jpg  161 kB  | Hide | Hide all
Ma1_Ma2_Horizontal_end-of-day.jpg
Attachment 3: Ma1_Ma2_Vertical_end-of-day.jpg  160 kB  | Hide | Hide all
Ma1_Ma2_Vertical_end-of-day.jpg
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