| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 |
|
|
173
|
Fri Jan 6 12:33:18 2023 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Laser Menhir reinstallation + CVBG + fiber injection | The lab purchased the Menhir laser @ 216MHz.
it has been sent back to Menhir
photonics for inspection, and then is now |
|
|
211
|
Thu Apr 4 21:48:16 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Larger beam size & Spectrum | - We re-measured the gain before moving
the mirror. Gain ~9000 was achieved at 3A,
but as the power increased, the gain dropped |
|
|
126
|
Thu Aug 11 19:27:09 2022 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | Optical room | Koheras CW laser lock on FP cavity | I locked the Koheras CW on the FP cavity
but the lock was pretty noisy and very difficult
to acquire. |
|
|
76
|
Wed Apr 20 19:05:37 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | KBox Alignment | Starting with the alignment of the KBox
using CW Koheras.
The size of the CW output from |
7x |
|
241
|
Thu Sep 4 17:35:50 2025 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | Optical room | Installation of the avalanche photodiode | After installing the 2nd EOM, we had some
trouble to be able to lock again.
One possible reason was the very low |
|
|
114
|
Tue Jul 12 18:53:55 2022 |
Manar Amer | Fixed | report | lasers and optics | detectors and electronics | Optical room | Installation of D-shaped mirror / Alignment | To prepare for the amplifier. I installed
the D-shapped mirrors after cleaning (using
aceton and ethanol) between the cavity 2 |
|
|
117
|
Fri Jul 22 17:10:06 2022 |
Manar Amer | Fixed | report | lasers and optics | detectors and electronics | Optical room | Installation of D-shaped mirror / Alignment | The D-shaped mirrors are installed properly
and not cutting the path of the beam.
The cavity has been aligned again |
|
|
182
|
Wed Jan 17 21:11:59 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Install new mirrors | Today, Ronic and I installed the new mirrors
and got resonance. We can see the oscillations
in this high-finesse case. We haven't |
|
|
183
|
Thu Jan 18 22:14:03 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Install new mirrors | - In the last two days, Ronic and I installed
new mirrors after cleaning the environment,
and locked the cavity. |
|
|
184
|
Mon Jan 22 18:18:01 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Install new mirrors | - Today, Ronic and I changed the signal
generator to a low-noise one (with a delay
time of only 0.5 us). Then we moved |
|
|
185
|
Wed Jan 24 20:33:27 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Install new mirrors | Yesterday we checked the mirrors with
UV light and there was some dust on the mirrors,
especially M2. |
|
|
215
|
Thu Apr 11 19:09:21 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Install 2-mirror cavity | Today, Viktor and I started installing
the two-mirror cavity.
- Firstly, we cleaned the environment |
|