| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
26
|
Mon Oct 4 15:24:14 2021 |
Aurélien Martens | Fixed | report | lasers and optics | detectors and electronics | Optical room | piezo actuation range | A 10V applied on the laser piezo was found
to induce a frequecny change of about 5kHz,
compatible with expectations from the piezo |
|
|
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 |
|
|
37
|
Wed Oct 20 14:54:00 2021 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | Optical room | Phase noise measurement of the Amplitude MIKAN | MIKAN phase noise and RIN measurements:
|
|
|
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 |
|
|
53
|
Mon Mar 28 17:10:33 2022 |
Blanc | Fixed | info | lasers and optics | detectors and electronics | Optical room | input and output power of the AOM 50MHz | Input power of the AOM :
150mW
output power of the AOM : |
|
|
54
|
Tue May 17 17:28:31 2022 |
Blanc | Fixed | issue | lasers and optics | detectors and electronics | Optical room | Différence de fréquence Tangor/Lockline | - On a observé que le fondamental
du Tangor et celui de la Lockline n'étaient
pas situés à la même |
|
|
6
|
Mon Apr 19 18:47:28 2021 |
Manar Amer | Fixed | report | lasers and optics | Other | Alignment using Helium Neon Laser | 05 April 2021 : A rough alignment
of the cavity was done using the Helium Neon
Laser. |
|
|
8
|
Tue Apr 27 13:57:15 2021 |
Manar Amer | Fixed | report | lasers and optics | Other | Alignment using Koheras | Following the Helium Neon Alignment + change
in the distance between the mirrors to be;
M3-M4 = 90.5 mm , M1-M2 = 80.2 mm -→ |
6x |
|
9
|
Thu Apr 29 06:14:09 2021 |
Manar Amer | Fixed | report | lasers and optics | Other | Mode observed and cavity Lock | ** Following up from yesterday an observation
about the TM00 mode : it has been seen with
similar dimensions and its position is the |
|
|
12
|
Fri May 7 15:40:10 2021 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Theoretical Finesse, Gain and Coupling | For spherical mirrors M3 and M4 (batch
C117I054) the reflectance (R) is around 99.9987%
(if T+R=1 => T=13ppm) |
|
|
14
|
Wed Jun 30 20:29:17 2021 |
Manar Amer | Fixed | report | lasers and optics | Other | Mode observed and cavity Lock | New configuration is made. The new mode
observed in NF_Trans is the following :
|
|
|
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 : |
|
|
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 |
|
|
22
|
Fri Sep 24 09:55:35 2021 |
Manar Amer | Under Process | report | lasers and optics | Optical room | Reflection Line Polarization Measuremet | With the help of Ronic the cavity was locked
in preparation to measure the polarization
of the reflection line when the cavity is |
|
|
32
|
Tue Oct 5 18:24:53 2021 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Locking with fast analog loop on AOM | in addition to the standard locking scheme
with the GHz laser PZT,
we added an AOM after the PDH modulation |
|
|
36
|
Wed Oct 20 12:36:15 2021 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | Amplitude GHz oscillator phase noise with PZT effect | 3 phase noise measurements made on the
Amplitude GHz oscillator with different PZT
configurations : |
|