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ID Date Author Statusdown Type Category Location Title Text Attachments
  45   Thu Dec 19 16:23:39 2019 Ronic ChicheFixedinfolasers and opticsOptical roomCavity beam axis moving with powerhow the cavity beam axis is moving during
a lock when the cavity is hot ?
could it explain a part of the Transmission		  9x 
  46   Thu Jan 9 16:54:05 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomMicroscope and cleaning of SBOX mirrorsThe mirrors went in the cavity the 28th
of november (We did several power up
to 30kW stored and only one to 40kW then		  resume_nettoyage_apres_sejour_dans_K-BOX_et_montee_en_puissance.PNG 
  47   Fri Jan 10 18:51:23 2020 Ronic ChicheFixedreportlasers and opticsOptical roomanalysis of stored and reflected powerthe 10th of January, we increased the power
of the amplifier to study the cavity transmitted
and reflected power signals.		  6x 
  48   Fri Jan 24 16:16:24 2020 Ronic ChicheFixedreportlasers and opticsOptical roomanalysis of stored and reflected powerA chart which summarizes
the data we have or we can estimate.
 Losses.pdfM1_losses_vs_Pcav.png 
  49   Fri Jan 24 17:52:14 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomAFM analysis of M1AFM has been proceeded on M1 and M2.

The pdf shows the first images
taken with the PLIC room Leica microscope		  200115_AFM_miroirs.pdf 
  50   Fri Jan 24 17:56:11 2020 Loïc AmoudryFixedinfolasers and opticsOptical roomAFM analysis of M2We had enough time to proceed a quick scan
of M2 which has also a hole but not centered
on the mirror.		  M2.PNG 
  51   Fri Jan 24 17:58:45 2020 Loïc AmoudryFixedinfolasers and opticsOptical roomCFBG removed from ThomX CELIA amplifierThe CFBG has been removed successfully
and the amplifier is closed now.

The soldering machine had a calibration		   
  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 
  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.		   
  56   Thu Feb 6 11:01:08 2020 Ronic ChicheFixedreportlasers and opticsOptical roomanalysis of stored and reflected powerwith this Finesse around 22-23k, the technique
comparing TRANSMISSION and REFLECTION signals
doesn't work, even in taking into account		  untitled.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 
  60   Wed Dec 16 12:36:37 2020 Loïc AmoudryFixedreportlasers and opticsOptical roomMirror's cleaning and microscope imagingOn 10th of december 2020 we cleaned the
SBOX mirrors and took microscope images
(the name of the images indicates what they		  14x 
  61   Tue Jan 5 12:38:04 2021 Manar AmerFixedreportlasers and opticsOptical roomTransmission Measurements for the Mirrors.
Thursday 10 December 2020:  
First Test Measurement - Inside Box

 The
transmission ( T ) for the mirrors of SBOX		  6x 
  62   Tue Jan 12 10:44:57 2021 Ronic ChicheFixedissuelasers and opticsOptical roomOrigami SN2440 133MHz laser power measurment... and failurewe received from NKT the Origami SN2440
133MHz oscillator from repair on 2020/12/17
and we measured the power trend from		  133mhzpower.PNG133mhz_power_zoom.png 
  63   Thu Jun 10 17:55:15 2021 Ronic ChicheFixedinfolasers and opticsOptical roomOrigami SN2440 133MHz laser testsToday, we received the Origami SN2440 133MHz
oscillator from repair (NKT mentioned a defective
wire inside the controller....)		  IMG_20210610_161502.jpgspectre_133MHz.PNGScreen_0015.png 
  64   Mon Jul 5 14:14:01 2021 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomOEwaves CW Laser - Phase Noise
We started measuring the phase
noise on the OEwaves CW laser.

Class
3b
wavelength 1.5 um


The		  20210207_OEwaves_laser.jpg20210207_Self_coupling_setup.jpgSchematic-setup-for-optical-delayed-self-coupling-detection.png 
  65   Mon Jul 5 14:40:57 2021 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomOEwaves CW Laser - Phase Noise a correction on the wavelength of the laser 
it is 1030 um 

  
  66   Mon Jul 5 14:46:44 2021 Manar AmerFixedreportlasers and optics | detectors and electronicsOptical roomOEwaves CW Laser - Phase Noise correction on unit 1030 nm




  
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