| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
145
|
Wed Sep 7 18:57:20 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Telescope / amplifier output | We increased the power of the amplifier
up to 10 W to see if there is a change in
the beam shape at the injection point or |
|
|
146
|
Wed Sep 7 18:58:03 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | Today we managed to observe the fundamental
mode and stabilize the scan on it until we
improved the alignment enough. |
|
|
147
|
Thu Sep 8 11:16:40 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | Today, we played on the CEP but using the
I-tune input of the Menhir Laser (+/- 5V
maximal range). |
|
|
148
|
Thu Sep 8 13:39:03 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | We played on the CEP using the USB command
"id0=xxxxx" of the Menhir.
we put id0=48650 and we improved |
|
|
149
|
Thu Sep 8 14:58:51 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | We managed to lock the cavity by adding
the AOM , but the lock is still difficult
to stabilize. |
|
|
150
|
Thu Sep 8 18:28:51 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | We wanted to increase the power of the
amplifier to measure the transmission output
at M2, |
|
|
151
|
Fri Sep 9 11:50:17 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | We locked the cavity, and it is stable
using the Transmission,
the high frequency that we thought |
|
|
152
|
Fri Sep 9 12:45:19 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | image of the lock with Coupling of ~ 60%
|
|
|
153
|
Fri Sep 9 12:49:44 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Locking Amplifier with Cavity | Alignment was improved to ~ 1.2 V on the
photodiode.
Only the second stage was on with |
|
|
154
|
Fri Sep 9 14:44:35 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Power storage In Cavity | We start of power output from amplifier
of 1W with only the first and second stage
on then we start with the third stage power |
|
|
155
|
Fri Sep 9 15:47:46 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Power storage In Cavity | At transmission power of 42 mW, coupling
60%, we see fundamental mode with a degeneracy
The D-shape motors were moved to |
|
|
158
|
Mon Sep 12 16:27:14 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Power storage In Cavity | Power increased in the amplifier
reflective filters added at the
transmission point to be able to have signal |
|
|
159
|
Mon Sep 12 17:00:35 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Power storage In Cavity | at max stage we reached at 2.5
A on the diodes we have
8000 gain , coupling ~ |
|
|
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) |
|