| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
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 |
|
|
216
|
Fri Apr 12 17:18:15 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Install 2-mirror cavity | Today Viktor and I completed the installation
of the two-mirror cavity and managed
to lock and measure the finesse. |
|
|
199
|
Wed Mar 13 19:44:41 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Injection at the amplifier current of 2 A | Today, Ronic and I optimized the locking at
the amplifier current of 2 A and
obtained ~ 21 kW inside |
|
|
26
|
Thu Jan 24 17:49:54 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Impacts on mirror's surface | All the mirrors show impacts on there surface
(some of them do not show deposit). Does
it come from experiments or fabrication ? |
|
|
107
|
Fri Jul 8 17:09:26 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Images of ThomX mirrors | Under the microscope,
the spherical mirrors show the
deposit of metal dots on the reflecting surface |
|
|
108
|
Fri Jul 8 17:10:44 2022 |
Manar Amer | Fixed | report | lasers and optics | Optical room | Images of ThomX mirrors | Mirror images in the previous log showing
the metal deposit of the coating of the spherical
mirrors |
|
|
210
|
Wed Apr 3 21:37:07 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | High power experiments (550kW) | - Today we moved the position of the D-shaped
mirror at 6A. When motor1 (vertical) is 0.2mm
away from the spot, the power in the cavity |
|
|
209
|
Wed Apr 3 08:53:33 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | High power experiments (520kW) | Yesterday, Ronic, Xing, Qili and I achieved
a more stable 520kW power at 7.5A (71W injection)
by optimizing the alignment and locking parameters. |
|