| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
176
|
Fri Dec 8 18:59:24 2023 |
Xinyi Lu | Fixed | report | lasers and optics | Optical room | Mounts installation and cavity alignment | Over the last two days, Viktor, Ronic and
I have started to install the mirror mounts
and try to align the cavity. |
|
|
177
|
Thu Dec 14 17:52:53 2023 |
Xinyi Lu | Fixed | report | lasers and optics | Optical room | Mounts installation and cavity alignment | Over the past few days, Viktor, Ronic and
I have continued to align the cavity.
We installed 4 mirrors and monitored the |
|
|
178
|
Wed Dec 20 10:45:37 2023 |
Xinyi Lu | Fixed | report | lasers and optics | Optical room | Mounts installation and cavity alignment | - Over the last few days, Viktor, Ronic
and I have reinstalled the mounts and realigned
the cavity with CW laser and old mirrors. |
|
|
179
|
Wed Jan 10 18:35:46 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Coupling efficiency improvement | - Recently we have focused on improving
the coupling efficiency. Without the telescope,
the original coupling efficiency was less |
|
|
180
|
Mon Jan 15 19:19:00 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Coupling efficiency improvement | - We got 30% coupling efficiency by installing
a set of telescopes, adjusting the polarization
and optimizing the alignment. The diameter |
|
|
181
|
Tue Jan 16 18:42:42 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | FSR and Finesse measurement | - Today, Ronic and I measured the finesse
and FSR after optimizing the locking. FSR
was adjusted to 160.27 MHz to match the pulsed |
|
|
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. |
|
|
186
|
Fri Jan 26 17:33:05 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Cleaning of Mirrors | Today Daniele, Ronic and I cleaned the
mirrors and locked the cavity. However, the
finesse was only 13,000 because of the not |
|
|
187
|
Mon Feb 12 17:17:04 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Cleaning of Mirrors | - Today we cleaned the environment and
put the spin coater and microscope inside
the airflow. |
|
|
188
|
Tue Feb 13 17:33:28 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Cleaning of Mirrors | Today, Daniele and I cleaned mirrors one
by one using pure water, alcohol, and the
spin coater. Here are the measurements of |
|
|
189
|
Wed Feb 14 17:20:26 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Cleaning of Mirrors | - Today, Daniele and I cleaned the
cavity inside, recleaned the M2 and
M4 and their mounts, optimized the locking, |
|
|
190
|
Wed Feb 21 17:33:59 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Menhir pulsed laser locking | These days, Ronic, Daniele and I achieved
stable cavity locking with the menhir pulsed
laser. |
|
|
191
|
Wed Feb 21 18:09:11 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Menhir pulsed laser locking | Here is a simulation of the relative FP-cavity
gain vs the CEP for a Finesse of 23000 and
taking into account the Menhir laser optical |
|
|
192
|
Mon Feb 26 08:58:33 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Menhir pulsed laser locking | Last week, Ronic and I focused on CEP
measurements of the menhir laser.
Measurements without |
|
|
193
|
Mon Feb 26 16:53:24 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Menhir pulsed laser locking | here is the code to get this last curve
|
|
|
194
|
Tue Feb 27 17:51:56 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Amplified laser injection | In the last two days, Ronic and I connected
the amplifier and locked the cavity.
- We installed an iris on the output |
|
|
196
|
Thu Mar 7 18:55:42 2024 |
Xinyi Lu | Fixed | info | lasers and optics | Optical room | Coupling efficiency improvement | - These days, Ronic, Fatematuj and I measured
the beam parameters of the output of the
third-stage amplifier. |
|