| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
160
|
Mon Sep 12 18:49:42 2022 |
Manar Amer | Fixed | issue | lasers and optics | Optical room | Damage on mirror surface | Following the storage of ~ 50 kW inside
the cavity and a sudden drop in transmitted
power from the cavity |
|
|
161
|
Mon Sep 12 18:50:57 2022 |
Manar Amer | Fixed | issue | lasers and optics | Optical room | Damage on mirror surface | Tomorrow will try to shift the injection
mirror to avoid hitting the damaged spot.
|
|
|
162
|
Tue Sep 13 19:26:27 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Damage on mirror surface | After discussing, we have decided against
shifting the mirror to avoid the time lost.
We changed the injection mirror |
|
|
163
|
Tue Sep 13 19:31:14 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | liPower storage In Cavity | After changing the mirror M1 and cleaning
the 2 mirrors
They were placed in the cavity |
|
|
164
|
Wed Sep 14 16:16:08 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Power storage In Cavity | The cavity was locked under vacuum, coupling
is approximately < 10%
The lock was relatively easy and |
|
|
165
|
Wed Sep 14 17:21:59 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Power storage In Cavity | We improved the lock using the alignment,
polarization and CEP , the maximum we got
was ~ 12% coupling |
|
|
166
|
Fri Sep 16 15:56:45 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Damage on mirror surface | a better image of the damaged spot, image
taken with the arrow for the reflective surface
facing the other direction (image shows position) |
|
|
167
|
Fri Sep 16 17:47:56 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Damage on mirror surface | ThomX injection mirror has been cleaned
and placed again inside the optical cavity.
This time to avoid the damaged |
|
|
168
|
Tue Sep 20 12:50:40 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | M1 ThomX used while shifted from damaged spot | Yesterday , we locked the cavity and we
see a sign of a high finesse on the transmission
signal, but no measurement of Finesse was |
|
|
169
|
Wed Sep 21 12:10:07 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | M1 ThomX used while shifted from damaged spot | To compare between the 2 images of the
cavity mode:
the mode by itself has |
|
|
170
|
Mon Sep 26 16:15:06 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | M1 ThomX used while shifted from damaged spot | On Wednesday 21st , I opened the cavity
did an additional 2 mm shift of the injection
mirror and put it under vacuum again. |
|
|
171
|
Tue Sep 27 19:30:49 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | M1 Gamma Factory | In the morning, Vacuum broken and rotated
M1 ThomX 90 degrees clockwise, locked the
cavity in air and we observe a degeneracy |
|
|
172
|
Wed Sep 28 18:43:51 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | M2 ThomX spherical Cleaning | Today, M2 Spherical-3 from ThomX that was
installed inside the SBox was removed, there
was one big dust on the surface of the mirror, |
6x |
|
1
|
Wed Sep 26 18:12:44 2018 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Cavity polarization states (Koheras), Finesse of 2 polarization states | Measurments of Finesse with the 2 polarization
states, let's call them H (higher) and
L (lower): 24500 for the H and 23500 for |
|
|
2
|
Mon Oct 1 11:30:39 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Phase measurement with HASO | 2 measurement.
First one locked, in transmission
of M2 with 2nd stage 0A.Total 89 cm from |
|
|
3
|
Mon Oct 1 14:27:35 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Phase measurement with HASO | * Loic has to fix the number of files (3)
regarding the number of measurements (2)
* splitted Intensity and phase |
8x |
|
4
|
Mon Oct 1 15:19:48 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Phase measurement with HASO | with just intensity, the coupling is 98%,
and with phase, x direction coupling is 95%,
y direction 97%, so the telescope is good. |
|
|
5
|
Tue Oct 9 10:15:17 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Polarization optimization | Optimization of the polarization has been
made the 03/10/18. Checked in reflection
of the cavity in reflection&transmission |
|
|
6
|
Tue Oct 9 10:19:29 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Record power-up | Measurement made on 03/10/18 (nothing has
been done since there).
Stable power in the cavity of 225 |
|
|
7
|
Thu Oct 18 09:42:39 2018 |
Loïc Amoudry | Fixed | report | mechanics | lasers and optics | Optical room | Motors for D-shaped mirrors | Motors have been installed on 16/10/18.
No problem with them.
Effect of the motors tested on |
|