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New entries since:Thu Jan 1 01:00:00 1970
ID Date Author Status Type Category Location Title Text Attachments
  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.
  
  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 
  112   Mon Jan 17 10:04:14 2022 Ronic ChicheFixedinfomechanicsThomX iglooDocumentation about mechanics on Atriumhttps://atrium.in2p3.fr/0dded51a-1cb0-43e6-ae0d-626cd5db7078

a lot of schematics regarding the
  
  111   Thu Jan 13 17:08:56 2022 Ronic ChicheFixedissuemechanics | lasers and opticsOptical roomAlignment procedurePicture of the installed mirrors inside
the FP cavity.

To install an Iris instead of a
 montage.jpg 
  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
  
  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 
  108   Fri Nov 26 20:12:10 2021 Ronic ChicheFixedreportlasers and opticsThomX iglooFP cavity alignmentA continuation of the alignment process
was done, there was change in it due to variation
in temperature, 
  
  107   Thu Nov 4 18:57:16 2021 Ronic ChicheFixedinfolasers and opticsThomX iglooFP cavity alignmentThis afternoon, we continued the alignment
of the red laser.
we did it using the 2 final injection
  
  106   Thu Nov 4 13:05:49 2021 Ronic ChicheFixedinfolasers and opticsThomX iglooFP cavity alignmentas the iris used to locate the FP-cavity
axis have been removed before moving the
table inside the Igloo, we have to find again
  
  105   Fri Dec 18 17:06:53 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomOnefive ouput power and spectrum1)  Note: The OneFive laser used for
experimenting is the one for the  SBox

but, for now only this laser arrived
  
  104   Fri Dec 18 16:10:04 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomOnefive ouput power and spectrumAfter turning on, one can see the 133.33MHz
Onefive output power for ~40min with OD2
filter (~/20). So the real output power is
 33MHz_output_power.PNG133_spectrum_full.PNG133_spectrum.PNG133_spectrum2.PNG 
  103   Fri Nov 6 14:23:16 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomBeam size and finesseMeasurement behind P4 (planar mirror)




  
  102   Tue Oct 27 13:13:50 2020 Loïc AmoudryFixedinfolasers and opticsOptical roomCoating reflectivityCoatings reflectivity curves and datas
for HR Saphir, HR Suprasil and HR ULE.
 6x 
  101   Tue Jul 7 12:49:38 2020 Ronic ChicheFixedinfolasers and opticsOptical roomFinesse measurement after the Edge installationAfter the Edge installation inside the
cavity, the Finesse has been measured several
times by modulation technique with an average
 untitled.png 
  100   Tue Jun 16 13:03:52 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomFinesse measurement after confinementAfter 3 months without human presence,
finesse has been measured 3 times with
average optimization: 
 sweep_parameters.PNGtek00007.pngtek0009CH1.isftek0010CH1.isftek0011CH1.isf 
  99   Fri Feb 28 17:44:12 2020 Ronic ChicheFixedreportlasers and opticsOptical roomPointing stability with CVBGYesterday, with Titouan, we made some measurements
on pointing stability of the laser beam after
amplifier and CVBG.
 Pointing_stability_without_airflow_and_no_one_walking_around.pngPointing_stability_without_airflow_vs_amplifier_current.png 
  98   Fri Feb 28 09:20:37 2020 Ronic ChicheNot Fixedissuelasers and opticsOptical roomAmplifier laser diodes issueThis is a long time issue for the ThomX
amplifier : on the 4 pumping diodes available,
the 1st diode has a higher temperature than
 Problem_TEC.PNGparam_diode_1.csvparam_diode_2.csv 
  97   Wed Feb 26 16:48:02 2020 Ronic ChicheFixedinfolasers and opticsOptical roomOptical spectrum before and after CVBGMeasurement of the optical spectrum with
Avantes OSA before (1st picture) and after
CVBG (2nd picture) with 2nd stage on the
 OSA_after_amplifier_CFBG_and_before_CVBG.PNGOSA_after_amplifier_CFBG_2_CVBG.PNG 
  96   Wed Feb 26 11:05:09 2020 Ronic ChicheFixedinfolasers and opticsOptical roomOptical spectrum analyzer resolutionSame measurement with Koheras @100mW and
using fiber coupling lenses between Koheras
and Avantes OSA.
 Capture2.PNG 
  95   Wed Feb 26 10:38:37 2020 Ronic ChicheFixedinfolasers and opticsOptical roomOptical spectrum analyzer resolutionThe Koheras @0.5mW is directly connected
with fibers FC/APC -> FC/PC to the Avantes
optical spectrum analyzer.
 Capture.PNG 
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