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ID Date Authordown Status Type Category Location Title Text Attachments
  109   Thu Dec 2 21:31:21 2021 Manar AmerFixedreportlasers and opticsThomX iglooFP cavity alignment Note the direction of injection is  
  M1 - M2 - M3 - M4

                                                      
 2021_12_02_M2_Transmission.jpg2021_12_02_M3_transmission_90deg.PNG 
  110   Tue Jan 11 10:36:35 2022 Manar AmerFixedreportlasers and opticsThomX iglooFP cavity alignment The alignment is on hold until next week
17th - 18th  Jan

an Alignment attempt will be done
  
  113   Mon Jan 17 21:22:28 2022 Manar AmerFixedreportlasers and opticsThomX iglooFP cavity alignment ***** Continuation of the alignment ----
FP Cavity Open --- ****

The cavity was put under outer
 Interior_of_cavity_P1_S3_windowOpen.jpgInterior_of_cavity_P1_S3_windowOpen_irrisOnP1.jpgCavityAlignment_cavityOpen_S2_Output.jpgCavityAlignment_cavityOpen_S3_Output.jpeg 
  114   Wed Jan 19 09:36:53 2022 Manar AmerFixedreportlasers and opticsThomX iglooFP cavity alignment Yesterday, we did the alignment again using
Iris and beam profilers to obtain a more
precise result.
  
  115   Tue Feb 1 14:17:02 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment Installed and inputs: 


CW laser ; power = 101
mW
PDH ;

at output

Low
 ThomX_FP_setup_01-02-2022.pngtek0002.png 
  116   Tue Feb 1 16:40:06 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment This afternoon, I did some alignment of
the injection mirrors with a fast scan on
the LaseLock to get a regular transmission
  
  117   Wed Feb 2 11:22:51 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment This morning with Manar, we installed the
AOM+RF amplifier and the associated fast
feedback loop.
  
  118   Wed Feb 2 11:41:01 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment Adding Oscilloscope images


delocked + locked intervals
showing the 20% coupling
lock
 tek0003.pngtek0006.pngtek0007.png 
  119   Thu Feb 3 13:56:24 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment Ending alignment series !!




  
  120   Thu Feb 3 14:10:08 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment As it can be seen on the first plot, even
with a good locking (good reduction of "high"
frequencies noise: we had better locking
  
  121   Thu Feb 3 14:11:50 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooCavity Lock and Finess measurment This morning, me and Ronic managed to obtain
the FSR and image of the finesse which is
to be analyzed.
 6x 
  123   Thu Feb 3 18:40:04 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooFP cavity alignment The fluctuation problem has been solved.
It was simply the new scheme to inject
2 RF frequencies in a single EOM.
  
  125   Thu Feb 3 18:59:10 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooCavity Lock and Finess measurment

to measure the Finesse, instead
of having 2x EOM for the PDH and for the
  
  126   Thu Feb 3 19:01:04 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooCavity Lock and Finess measurment

After changing the way of injecting
modulation for PDH and modulation for FSR
 Finesse_Fit.png 
  127   Fri Feb 4 10:59:56 2022 Manar AmerFixedreportlasers and optics | detectors and electronicsThomX iglooCavity Lock and Finess measurment one thing which could reduce the Finesse
is the L-shape metal piece if it is slightly
inserted in the FP-cavity mode path.
 apercu_03.jpgBras_manipulateur.jpg 
  129   Fri Mar 11 12:59:35 2022 Manar AmerFixedreportlasers and opticsThomX iglooCavity beam Image Updated beam image after change on the
mode axis.

Taken after P4.
 Capture.PNGCapture2.PNG 
  132   Mon Mar 14 18:39:40 2022 Manar AmerFixedinfomechanics | lasers and optics | detectors and electronicsThomX iglooCurrent Installed SetupAttached is the current setup in ThomX  18-02-2022_ThomX_FPCavity_Finesse_Setup.jpg 
  135   Tue Mar 22 21:19:48 2022 Manar AmerFixedreportlasers and opticsThomX iglooAlphanov amplifier Beam ProfileToday: Manar, Ronic and Aurlien started
the study of the beam profile of the alphanov
amplifier at high power.
 8x 
  136   Tue Mar 22 21:20:28 2022 Manar AmerFixedreportlasers and opticsThomX iglooAlphanov amplifier Beam Profile 




  
  137   Wed Mar 23 13:55:11 2022 Manar AmerFixedreportlasers and opticsThomX iglooAlphanov amplifier Beam ProfileAdding the fitted beam in 1D in Horizontal
and vertical axis.

for 10%   to  60%
 6x 
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