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ID Date Author Status Type Category Location Title Text   44   Mon Dec 6 11:22:08 2021 Kevin Dupraz Under Process info lasers and optics | detectors and electronics Optical room Cameras Calibration        45   Tue Dec 7 11:48:33 2021 Kevin Dupraz Under Process info lasers and optics | detectors and electronics Optical room Cameras Calibration After check a mistake has been found on the magnification. This seems to be the good calibration (feel free to cross check). The      46   Fri Dec 10 16:57:56 2021 Kevin Dupraz Under Process report lasers and optics Optical room Manip 10 12 2021 (optimization injection Burst) Manip 10/12/2021 Après recherche de la résonnance principale      47   Tue Dec 14 12:59:07 2021 Kevin Dupraz Under Process report lasers and optics Optical room Manip 14 12 2021 injection optimization (and calibration) Matin : moteurs : M1, M2 (plans): 5.110500m      48   Thu Dec 16 10:40:55 2021 Kevin Dupraz Under Process report lasers and optics Optical room Manip 14 12 2021 injection optimization (and calibration) Après-midi :     * Optimisation de l'alignement en injection pour avoir      49   Thu Dec 16 12:12:10 2021 Kevin Dupraz Under Process report lasers and optics Optical room Manip 16 12 2021 montée en puissance Matin:  * Redémarrage Tangor 4W     - couplage 15%      50   Thu Dec 16 12:13:52 2021 Kevin Dupraz Under Process report lasers and optics Optical room Manip 16 12 2021 montée en puissance        52   Fri Dec 17 17:03:34 2021 Kevin Dupraz Under Process report lasers and optics Optical room Manip 17 12 2021 reprise réf nouvelle injection pour polarisation Tangor : 4.2W * Réalignement de l'injection suite aux modifications :      17   Tue Sep 7 14:27:07 2021 Blanc Fixed info lasers and optics Optical room Polarisation Results of the NKT I made many tests about polarization and we can see some points thanks to the following figures :      18   Tue Sep 7 17:48:50 2021 Blanc Fixed info lasers and optics | detectors and electronics Optical room Locking of the cavity and setup changing We change the setup a bit to have the same polarization on the photodiode and the PDH (in reflexion of the cavity). CF: schematics      19   Wed Sep 8 10:50:38 2021 Blanc Fixed info lasers and optics Optical room Polarisation Results of the NKT To have the polarisation, we must have 1 value because the laser in entry of the system has 1 polar. Due to that, the graphe      20   Thu Sep 9 16:34:37 2021 Blanc Fixed info lasers and optics Optical room Ring light in the cavity We put a diaphragm in the input beam but it doesn't work to suppress the ring light only but it attenuates the whole transmitted      21   Thu Sep 16 18:23:13 2021 Blanc Fixed info lasers and optics Optical room Polarization Results in transmission After data processing, I finally find the polarization in transmissin of the FPC. As you can see below, the polarisation is not      23   Fri Oct 1 16:55:47 2021 Blanc Fixed info mechanics | lasers and optics | detectors and electronics Optical room 1GHz oscillator Frep measurement a previous cavity FSR measurement was giving a center frequency around 867.5MHz. the present 1GHz oscillator Frep measurement      33   Thu Oct 7 17:53:53 2021 Blanc Fixed info lasers and optics | detectors and electronics Optical room Finess and coupling measurement We did the measurement of the Finess and coupling with the NKT, with 2 EOM, without AOM (so the lock signal is noisy), on the      34   Fri Oct 8 16:02:19 2021 Blanc Fixed info lasers and optics | detectors and electronics Optical room Setup and measurements To summerize the results of this week : We made the setup in attachement 5 and align it to have the good mode in the      39   Thu Oct 21 09:44:35 2021 Blanc Fixed info mechanics | lasers and optics | detectors and electronics Optical room 1GHz oscillator Frep measurement The optical spectrum of the GHz oscillator: FWHM ~ 4nm      40   Thu Oct 21 10:24:01 2021 Blanc Fixed info utilities Other Presentations Here the first part of all the presentations since the beginning of the project.      41   Thu Oct 21 10:30:38 2021 Blanc Fixed info utilities Other Presentations Here the second part of all the presentations since the beginning of the project.      42   Thu Oct 21 10:32:54 2021 Blanc Fixed info utilities Other Presentations Here the last part of all the presentations since the beginning of the project.

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