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ID Datedown Author Status Type Category Location Title Text Attachments
  105   Wed Jul 6 18:39:38 2022 Manar AmerFixedreportlasers and optics | vacuumOptical roomSBox Finesse at 216.6625 MHz 




  
  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
  
  103   Wed Jul 6 18:37:02 2022 Manar AmerFixedreportlasers and opticsOptical roomDivergence of the CW beam after collimator Closing the series of the telescope for
the beam @ 133.33 MHz

 
  
  102   Wed Jul 6 18:35:38 2022 Manar AmerFixedreportlasers and opticsOptical roomFundamental Mode TEM00Closing series of 00 mode for FSR @ 133.33
MHz

 
  
  101   Wed Jul 6 18:34:12 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCavity Lock Closing the series for the setup

The cavity was only locked @ 133.33
MHz but the Finesse was not measured
  
  100   Mon Jun 27 08:52:46 2022 Manar AmerFixedreportlasers and optics | vacuumOptical roomSBox Finesse at 216.6625 MHzThe Sbox currently has the injection from
ThomX installed T ~ 120 ppm , M2 planar from
Sbox spare and M3 / M4 spherical mirrors
 20220624_SBox_MENHIR.pptx 
  99   Tue Jun 21 23:52:28 2022 Manar AmerFixedreportmechanics | lasers and optics | detectors and electronicsOptical roomMenhir Pulsed LaserThe SBox Length (FSR), was changed to match
the repetition rate of the Menhir
pulsed laser Frep = 216.6625 MHz
 MENHIR_injection_into_fiber.jpgSBox_M.jpg20220620_SBox_MENHIR.pptx 
  98   Thu Jun 9 19:59:42 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCavity Lock Cavity locked today under vacuum and no
airflow, it is stable over a long time

the alignment was improved and
 00_Mode_Locked_Under_vacuum.bmpMa1_Ma2_Horizontal_end-of-day.jpgMa1_Ma2_Vertical_end-of-day.jpg 
  97   Wed Jun 8 11:31:47 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCavity Lock Current setup at SBox for locking the cavity

After spacial matching, the coupling
increased to ~ 15 - 20 % 
 20220607_SBox_Setup.pngMa1_Ma2_Horizontal_end-of-day.jpgMa1_Ma2_Vertical_end-of-day.jpg 
  96   Wed Jun 8 11:24:35 2022 Manar AmerFixedreportlasers and opticsOptical roomTelescope - Spacial Matching Divergence of the CW beam out of the collimator
measured after 1 meter to be 


 SBox_Spacial_Matching_Telescope.png 
  95   Wed Jun 8 11:10:17 2022 Manar AmerFixedreportlasers and optics | detectors and electronics | softwareOptical roomCavity Lock Start with the cavity lock images attached,
taken from last week, at
start we have a coupling ~ 5%  and started
 Screenshot_2022-05-30_0_125247.png20220530_00_Mode.bmp11.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 
  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
  
  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 
  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 
  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 
  89   Tue May 24 21:51:01 2022 Manar AmerFixedreportlasers and optics | utilitiesOptical roomSpincoater - Mirrror cleaning While repeating the alignment, the mirrors
were cleaned using the spin-coater and placed
again.
  
  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 
  87   Wed May 11 20:51:28 2022 Manar AmerFixedreportlasers and optics | utilitiesOptical roomSpincoater - Mirrror cleaning Following the observation that when rotating
M2 plan mirror of SBox the deformation position
of the mode changes.
 M2_spare_fb_2.jpgM2_spare_fa_2.jpg20201210_M2_spare_after_cleaning.tif 
  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 
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