Cameras Calibration, posted by Kevin Dupraz at Optical room about lasers and optics | detectors and electronics 
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After installing cameras the actual calibration are :
NF_Refl: acA1920-40gm
pixel size (real): 5.86um |
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Cavity lock and references, posted by Kevin Dupraz at Optical room about lasers and optics | detectors and electronics
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Cavity is lock and optimized with the NKT. Input power is maximized (10mW).
Cavity mode is in attachement. The reference on camera with BeamProfiler Matlab code is the following:
FF_refl: [2.0883 1.1606] |
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Reflection Line Polarization Measuremet, posted by Manar Amer at Optical room about lasers and optics
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With the help of Ronic the cavity was locked in preparation to measure the polarization of the reflection line when the cavity is locked (measurement
when it is not locked was done before)
the purpose is to compare the two measurements (locked vs not locked) |
Cameras Calibration, posted by Kevin Dupraz at Optical room about lasers and optics | detectors and electronics
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Kevin
Dupraz wrote:
After installing cameras the actual calibration are : |
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Cameras Calibration, posted by Kevin Dupraz at Optical room about lasers and optics | detectors and electronics
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After check a mistake has been found on the magnification. This seems to be the good calibration (feel free to cross check). The projection of the 2mm
hex is attached
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Manip 10 12 2021 (optimization injection Burst), posted by Kevin Dupraz at Optical room about lasers and optics
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Manip 10/12/2021
Après recherche de la résonnance principale
- MCS miroirs plan à 5.110250mm (en derive vers les negatifs) |
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Manip 14 12 2021 injection optimization (and calibration), posted by Kevin Dupraz at Optical room about lasers and optics
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Matin :
moteurs :
M1, M2 (plans): 5.110500m |
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Manip 14 12 2021 injection optimization (and calibration), posted by Kevin Dupraz at Optical room about lasers and optics
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Après-midi :
* Optimisation de l'alignement en injection pour avoir le plus de puissance en transmission
* Optimisation (vérification) de la polarisation pour avoir le plus de couplage. |
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Manip 16 12 2021 montée en puissance, posted by Kevin Dupraz at Optical room about lasers and optics
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Matin:
* Redémarrage Tangor 4W
- couplage 15% |
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Manip 16 12 2021 montée en puissance, posted by Kevin Dupraz at Optical room about lasers and optics
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Kevin
Dupraz wrote:
Matin: |
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Changements et ajout d'optiques, posted by Blanc at Optical room about lasers and optics
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Optiques ajoutées :
- splitter 90/10 au début de la voie de réflexion, pour éjecter le flux et éviter que les lambdas ne chauffent.
- deuxième polariser pour avoir une meilleur extinction. |
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Manip 17 12 2021 reprise réf nouvelle injection pour polarisation, posted by Kevin Dupraz at Optical room about lasers and optics
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Tangor : 4.2W
* Réalignement de l'injection suite aux modifications :
- Changement de l'ordre des waveplate maintenant : lambda/4, puis lambda/2 |
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Changement cadence et duty cycle + ref cam, posted by Blanc at Optical room about lasers and optics
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- Prise des nouvelles ref caméras : NF{709;371} , FF{389;280} [Image 1 & 2]
- Placement d'une photodiode rapide en transmission pour voir le train d'impulsions du Tangor à travers la cavité.
- Lock du Tangor en quasi-continue, P_moy = 2W, 100 kHz. |
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Problèmes Cavitée, posted by Blanc at Optical room about lasers and optics
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Précédentes ref pour lesquelles la manip fonctionnait :
Caméras :
709 ; 371 NF |
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Phase noise measurement of the Amplitude MIKAN, posted by Ronic Chiche at Optical room about lasers and optics | detectors and electronics
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Installation of the MIKAN.
powermeter (with OD1) just after the oscillator shows 440mW for 4A of the MIKAN pump current.
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Phase noise measurement of the Amplitude MIKAN, posted by Ronic Chiche at Optical room about lasers and optics | detectors and electronics
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Coupling into a 50-50% fiber coupler using the Thorlabs XYZ table NanoMax TS.
We reached 117mW after the 50% arm which means we coupled about 230mW (the coupling better than 50%).
Ronic |
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Mirrors Mottors Connections , posted by Manar Amer at Other about mechanics
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* The connections to control the motors of the mirrors are connected in the order stated :
M1
- M2 - M3 - |
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Mirrors Mottors Connections , posted by Manar Amer at Other about mechanics | cabling
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Added the cabling to the categories
Manar
Amer wrote:
* The connections to control the motors of the mirrors are connected |
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Setting up the Motors, posted by Manar Amer at Other about mechanics | cabling | software
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A document attached that describes the procedure needed to:
- connect the motors
- configure the Ethernet connection |
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Alignment using Helium Neon Laser , posted by Manar Amer at Other about lasers and optics
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| 05 April 2021 : A rough alignment of the cavity was done using the Helium Neon Laser. |