| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
24
|
Fri Mar 29 18:33:15 2019 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | Optical room | Alignment procedure | we did again the complete alignment procedure
starting with iris and optimizing injection
motors Ma and Mb, then installing mirror |
|
|
111
|
Thu Jan 13 17:08:56 2022 |
Ronic Chiche | Fixed | issue | mechanics | lasers and optics | Optical room | Alignment procedure | Picture of the installed mirrors inside
the FP cavity.
To install an Iris instead of a |
|
|
448
|
Thu Aug 7 11:14:47 2025 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | ThomX igloo | Alignment correction during the summer break | I restarted the FPC system this morning.
after some classic alignement procedure
(some LEFT steps on the cavity injection |
|
|
315
|
Fri Jan 19 18:05:42 2024 |
Ronic Chiche | Fixed | info | detectors and electronics | ThomX igloo | Adding one photodiode in reflection | this morning, I added a DET36 photodiode
in reflection (I used a thin beam splitter)
to better measure the coupling over the full |
|
|
452
|
Tue Sep 16 17:41:28 2025 |
Ronic Chiche | Fixed | info | mechanics | lasers and optics | detectors and electronics | ThomX igloo | Accelerometer measurement | with Daniele, we placed the accelerometer
on top of the fiber amplifier box which is
inside the housing. |
|
|
426
|
Wed Jun 11 11:35:22 2025 |
Ronic Chiche | Fixed | info | lasers and optics | detectors and electronics | software | ThomX igloo | 33MHz phase adjustment | the 33MHz beating signal (phase) is used
to start and stop automatically the lock
on the 500MHz beating signal. |
|
|
213
|
Thu Jun 1 10:31:45 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | the last tries to lock the 33MHz + amplifier
to the 30k Finesse FP-cavity were unsuccessful.
during a laser Frep scan using |
|
|
214
|
Thu Jun 1 18:15:04 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | finding the right modulation/demodulation
PDH phase is very difficult on the main resonance
because the we get non stationnary signals |
|
|
217
|
Tue Jun 6 15:52:59 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | today with Daniele, we locked easily (but
with a noisy lock) on the secundary resonance
and we tried to lock on the main resonance |
|
|
219
|
Thu Jun 8 11:12:20 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | After removing the 2 generators from the
optical table, the lock is much more stable
and now, it is possible to lock on the main |
|
|
222
|
Tue Jun 20 18:45:10 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | this morning, I tested the laser+amplifier
@ 30% lock on the FP cavity with and without
Smaract motors. |
|
|
223
|
Tue Jun 20 19:08:17 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | I checked with the Matlab code below the
CEP detuning effect (2nm sech² spectrum...
not exactly the same as in ThomX) |
|
|
224
|
Thu Jun 22 20:20:03 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | we checked yesterday morning the real input
power @ 30% for the amp => it is 16W in
agreement with the previously measured values |
|
|
227
|
Wed Jul 26 14:49:41 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | Today, we locked the cavity with input
power @ 30% for the amp => we got 40kW
with only 30% of coupling (and a bad lock |
|
|
244
|
Fri Sep 8 19:45:56 2023 |
Ronic Chiche | Fixed | info | lasers and optics | ThomX igloo | 33MHz oscillator + Alphanov amplifier lock | redoing the PDH error signal scheme with
discrete components is more flexible and
it is easier to check the signal/noise ratio. |
|
|
153
|
Tue Jul 12 15:55:20 2022 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | 33MHz laser SN2439 back to Orsay | On the 8th of July, the SN2439 33MHz laser
was returned from NKT to our lab, being repaired.
it stayed all the weekend to warm |
|
|
155
|
Mon Oct 3 18:54:58 2022 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | 33MHz laser SN2439 back to Orsay | This morning, with Aurélien and
Daniele, we did the swap between the 33MHz
and 133MHz oscillators. |
|
|
156
|
Wed Oct 5 15:51:26 2022 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | 33MHz laser SN2439 back to Orsay | Yesterday with Aurélien, we try
to make the laser modelock using the Smaract
translation stages embedded inside the laser |
|
|
157
|
Fri Oct 7 17:47:39 2022 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | 33MHz laser SN2439 back to Orsay | Today, we used an "ELI-NP" Smaract
controller made with these 2 references :
MCS-3CC-ETH-TAB (SN 2271) => main |
|
|
158
|
Thu Oct 13 12:12:49 2022 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | 33MHz laser SN2439 back to Orsay | Yesterday, we put back the 33MHz oscillator
into the casemate with the new Smaract controller.
after switching ON the laser controller, |
|