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  Status of commissioning, report also here plots are reports., Page 8 of 13  Not logged in ELOG logo
ID Date Author Status Type Category Location Titledown Text Attachments
  216   Fri Apr 12 17:18:15 2024 Xinyi LuFixedinfolasers and opticsOptical roomInstall 2-mirror cavityToday Viktor and I completed the installation
of the two-mirror cavity and managed
to lock and measure the finesse.
 finesse_2mirror.pngScreenshot_2024-04-12_170357.pngScreenshot_2024-04-12_145025.png 
  199   Wed Mar 13 19:44:41 2024 Xinyi LuFixedinfolasers and opticsOptical roomInjection at the amplifier current of 2 AToday, Ronic and I optimized the locking at
the amplifier current of 2 A and
obtained ~ 21 kW inside
 21kW_power_at_2A_injection.png 
  26   Thu Jan 24 17:49:54 2019 Loïc AmoudryFixedreportlasers and opticsOptical roomImpacts on mirror's surfaceAll the mirrors show impacts on there surface
(some of them do not show deposit). Does
it come from experiments or fabrication ?
 18_M1reflectiveface2x_compressed.jpg 
  107   Fri Jul 8 17:09:26 2022 Manar AmerFixedreportlasers and opticsOptical roomImages of ThomX mirrors Under the microscope,

the spherical mirrors show the
deposit of metal dots on the reflecting surface
 ThomX_Spherical_Front_coating.jpgThomX_Spherical_2_Front_coating.jpgThomX_Spherical_back.jpg 
  108   Fri Jul 8 17:10:44 2022 Manar AmerFixedreportlasers and opticsOptical roomImages of ThomX mirrors Mirror images in the previous log showing
the metal deposit of the coating of the spherical
mirrors
  
  210   Wed Apr 3 21:37:07 2024 Xinyi LuFixedinfolasers and opticsOptical roomHigh power experiments (550kW)- Today we moved the position of the D-shaped
mirror at 6A. When motor1 (vertical) is 0.2mm
away from the spot, the power in the cavity
 record.pngpower_vs_time_550.jpg1A.JPG 
  209   Wed Apr 3 08:53:33 2024 Xinyi LuFixedinfolasers and opticsOptical roomHigh power experiments (520kW)Yesterday, Ronic, Xing, Qili and I achieved
a more stable 520kW power at 7.5A (71W injection)
by optimizing the alignment and locking parameters.
 power_vs_time.pngcavitymode_vs_power_1.pngrecord.pnginjection_power_vs_intra_power.png 
  208   Tue Apr 2 08:39:17 2024 Xinyi LuFixedinfolasers and opticsOptical roomHigh power experiments (500kW)Last week, we achieved a stable intracavity
average power of 500kW, limited by amplifier
power. The experimental data are shown
 record.pngpower_vs_time.pngcavitymode_vs_power.png 
  205   Wed Mar 27 22:37:02 2024 Xinyi LuFixedinfolasers and opticsOptical roomHigh power experiments (272kW)Today, Ronic and I achieved 272kW inside
the cavity at 7.5A. The coupling maintained
60%-70%.
 Screenshot_2024-03-27_7_270kW_7.5A.png210_kW_power_at_5A_injection.png272.3kW_at_7.5A.jpg 
  203   Tue Mar 26 19:36:48 2024 Xinyi LuFixedinfolasers and opticsOptical roomHigh power experiments (200kW)These days, Ronic and I achieved 200kW
inside the cavity and 70% coupling efficiency.

- By optimizing the telescope,
 202kW_power_at_8A_injection.pngStrange_drops.jpg 
  204   Wed Mar 27 09:47:37 2024 Xinyi LuFixedinfolasers and opticsOptical roomHigh power experiments (200kW)all the injection power in the chart have
not been measured recently but during the
Loic thesis period.
  
  52   Wed Jan 29 19:00:02 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomGlow discharge cleaner on SBOX mirrorsThe glow discharge cleaner has been tested
on the SBOX mirrors.

I've put them 1 by 1. Each
 glow.PNG 
  91   Tue May 24 22:11:40 2022 Manar AmerFixedreportlasers and opticsOptical roomFundamental Mode TEM00The current setup for the SBox has a beam
viewer and 2 photodiodes placed at reflection
and transmission.
 20220524_SBox_Setup.png00mode_CW_piezo_drive.bmp00mode_11mode.bmp 
  92   Wed May 25 17:34:29 2022 Manar AmerFixedreportlasers and opticsOptical roomFundamental Mode TEM00Adding images from the transmission after
the spherical mirrors M3 and M4 window for
a resonating mode inside the cavity.
 beamviwer_transmission_at_M3.bmpbeamviwer_transmission_at_M4.bmp 
  94   Wed Jun 8 10:58:15 2022 Manar AmerFixedreportlasers and opticsOptical roomFundamental Mode TEM00Images of the Transmitted beam at M2 mirror
at different days. 

The first one was from last week,
 20220530_00_Mode.bmp00_Mode_Beam_Transmitted_Position_drift_due_to_temperature.bmp 
  102   Wed Jul 6 18:35:38 2022 Manar AmerFixedreportlasers and opticsOptical roomFundamental Mode TEM00Closing series of 00 mode for FSR @ 133.33
MHz

 
  
  22   Mon Nov 5 13:11:08 2018 Loïc AmoudryFixedreportlasers and opticsOptical roomFirst run with spare mirrors


I (A)
 Plot_power_and_gain_vs_all.JPGpowerup.xlsx 
  12   Wed Oct 31 11:36:30 2018 Loïc AmoudryFixedreportlasers and opticsOptical roomFinesse vs power by difference between main and second resonanceMeasurements show that ratio decrease versus
power. BUT, the second resonance measurement
induce lower power in the cavity so the ratio
 CrossSecondaryResonance.mGetCavity.m 
  15   Wed Oct 31 13:43:28 2018 Loïc AmoudryFixedreportlasers and opticsOptical roomFinesse vs power by difference between main and second resonanceMeasurement on 24/10/18




  
  16   Wed Oct 31 13:44:22 2018 Loïc AmoudryFixedreportlasers and opticsOptical roomFinesse vs power by difference between main and second resonanceMeasurement on 25/10/2018




  
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