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ID Date Author Status Type Category Location Titledown Text Attachments
  104   Wed Jul 6 18:39:25 2022 Manar AmerFixedreportlasers and optics | vacuumOptical roomSBox Finesse at 216.6625 MHzMax Finesse obtained @ 4 mirror setup was
~ 19 300  

With M1 from ThomX , M2/M3/M4 from
  
  105   Wed Jul 6 18:39:38 2022 Manar AmerFixedreportlasers and optics | vacuumOptical roomSBox Finesse at 216.6625 MHz 




  
  77   Mon Apr 25 17:28:29 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment SBox alignment, using CW laser Koheras
power 1 mW


 6x 
  78   Mon Apr 25 17:58:01 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment After pointers and Advice from Aurélien,

improvement of the beam alignment
through M1 and M2 irises was done.
 Ma1_Ma2_Horizontal_Position_Optimized.pngMa1_Ma2_Vertical_Position_Optimized.pngAfter_M1_diaphram_1m_Saturated_Beam_Optimized.jpgAfter_M2_M1_diaphram_Saturated_Beam_Optimized.jpgAfter_M2_M1_diaphram_Beam_Optimized.jpg 
  79   Mon Apr 25 18:02:09 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment Remember to update the position of the
reference Irises tomorrow !!!!

  
  80   Tue Apr 26 20:08:10 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment
Adjust the placement of
the Irises  (done at the start of the
 9x 
  81   Wed Apr 27 22:13:37 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment Finished the alignment of the SBox with
M1 of SBox placed, to be changed to gamma
factory mirror later
 all_mirrorsplaced_after_m2_window.jpg20222704_SBox_alignment.pptx 
  83   Mon May 9 18:36:48 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment Last week In FP cavity we had all SBox
mirrors including the damaged M1 mirror.

The beating was observed with just
 Beating_TM00_SBox_damaged_M1.jpgBeating_HigherOrder_SBox_damaged_M1.jpg 
  84   Mon May 9 19:05:35 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment Today; replaced the M1 SBox mirror with
M1 from gamma factory , following the previous
alignment.
 M2_alignment_M3_pinhole.jpgM3_alignment_M4_pinhole.jpgM4_alignment_M1_pinhole.jpgBeating_TM00_CW_piezo_drive.jpg 
  86   Wed May 11 09:19:48 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment Yesterday, to find the source of why the
mode is deformed, I tried to rotate the mirrors
to see if there is a change.
 Beating00_after_rotatingM2_2.jpg 
  88   Wed May 11 21:10:27 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment M2 Sbox changed to spare. Alignment of
M2 was redone. 

With the help of Ronic , We observe
 TM00_mode.jpgTM01_mode.jpgTM10_mode.jpg 
  90   Tue May 24 22:05:48 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment The external and internal alignment was
redone.

External Alignment : the collimator
 7x 
  93   Wed Jun 8 10:47:45 2022 Manar AmerFixedreportlasers and opticsOptical roomSBox Alignment Closing Series for Alignment.

Beating observed, beam is in the
locking stages
  
  53   Wed Jan 29 19:04:38 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomSBOX mirrors cleanedToday, SBOX mirrors have been cleaned with
spin coater on HR face and isoprop on back
face. They show similar spots as before.
  
  54   Wed Feb 5 14:47:16 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomSBOX mirrors cleanedYesterday, after installation and alignment
of mirrors and cavity, the Finesse has been
measured with cavity at air pressure, with
  
  55   Wed Feb 5 16:46:01 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomSBOX mirrors cleanedToday we put the cavity to vacuum (~ 0.1
mBar) and we measured again the Finesse with
Koheras and modulation technique.
  
  6   Tue Oct 9 10:19:29 2018 Loïc AmoudryFixedreportlasers and opticsOptical roomRecord power-upMeasurement made on 03/10/18 (nothing has
been done since there).

Stable power in the cavity of 225
  
  123   Mon Aug 8 17:58:32 2022 Ronic ChicheFixedinfolasers and opticsOptical roomPulse duration measurement before and after CVBG (as a strecher)I recorded the pulse shape of the MENHIR
216MHz in its fiber injection setup.
the fiber is then connected to the
 pulse_measurement_without_and_with_CVBG.pngpulse_measurement_after_CVBG_compared_with_convolution.pngSpectrumafterCVBGzoom.png.png 
  57   Thu Feb 6 16:58:57 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomPower up to 48kW crater effect againAs we said, after glow discharge and spin
coater we recovered a low power finesse ~23000
(aligning away from the M1 crater).
 3A_136mWtrans.png4A_126mWtrans.pngmode_strange.png 
  154   Fri Sep 9 14:44:35 2022 Manar AmerFixedreportlasers and opticsOptical roomPower storage In CavityWe start of power output from amplifier
of 1W with only the first and second stage
on then we start with the third stage power
  
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