| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
242
|
Thu Sep 4 17:52:03 2025 |
Alice Renaux | Fixed | report | lasers and optics | Optical room | Finesse measurement | Today, with Ronic, we measured the finesse
of the 2-mirror cavity witht the NKT CW laser.
We were able to perfrom the measurement |
|
|
243
|
Thu Sep 4 17:56:50 2025 |
Alice Renaux | Fixed | report | lasers and optics | Optical room | Finesse measurement | (Finesse 2651 is consistent with that obtained
from the mirrors' transmission coefficients,
which is about 3100.) |
|
|
244
|
Tue Sep 9 21:23:11 2025 |
Alice Renaux | Fixed | report | lasers and optics | Optical room | new cavity | Yesterday, we changed the M1 mirror to
a 161185 Gamma
Factory mirror of transmission 460ppm, the |
|
|
245
|
Wed Sep 10 11:27:45 2025 |
Alice Renaux | Fixed | report | lasers and optics | Optical room | new cavity | The 2-mirrors cavity has 460ppm of transmission
for M1 and 10ppm for M2 which should exhibit
a Finesse around 13400. |
|
|
246
|
Wed Aug 5 11:25:41 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | we have all the adaptor plugs for connecting
the chiller.
so, I tested first the chiller connected |
|
|
247
|
Wed Aug 5 12:22:52 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | now, I connected the chiller circuit to
the amplifier, thanks to the adapters.
chiller IN => blue pipe => |
|
|
248
|
Wed Aug 5 13:49:49 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | pipes are maybe too long ?
we can use the Darcy-Weisbach +
Blasius laws (non linear laws). |
|
|
249
|
Thu Aug 6 14:49:32 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | I drained the chiller to install again
the short pipe (< 1m) in closed loop.
then, I filled again the chiller |
|
|
250
|
Thu Aug 6 15:12:49 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | now, I installed the long pipes (2x 3m)
in closed loop (without the amplifier connected),
but the exact ones used to connect the laser, |
|
|
251
|
Fri Aug 7 10:59:52 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | I cut a small part of the black pipe on
the amplifier side (could it be slightly
deformed by a try with an other type of adapter |
|
|
252
|
Fri Aug 7 11:41:17 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | as soon as I connect the amplifier to the
pipes, the flow decreases to 1.7Lpm.
and the filling process is very |
|
|
253
|
Tue Aug 25 09:47:01 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | an email from Neolase/AMS claims that 1.7Lpm
is a normal flow (previous tests at 1.2Lpm
have been done successfully with a reduced |
|
|
254
|
Tue Aug 25 12:09:30 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | I connected the power supplies, laser controller
and laser head together with all the cables...
with no scheme in the manual. |
|
|
255
|
Tue Aug 25 16:27:29 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | I installed 4 steel feets around the amplifier,
with rubber damping absorbers on top, to
put later the oscillator optical breadboard |
|
|
256
|
Wed Aug 26 16:12:13 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | this morning, I tried to restart the controller
but all the temperatures values on the NeoCon
software were stuck to 0°C ! |
|
|
257
|
Thu Aug 27 11:08:44 2026 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | fiber patch cables attenuation measurements | attenuation with 1 mating sleeve :
green jacket fiber : -0.4 dB
blue jacket fiber N°1 : -0.5 |
|
|
258
|
Thu Aug 27 11:13:07 2026 |
Ronic Chiche | Under Process | info | lasers and optics | Optical room | Menhir oscillator phase noise measurement | with Alice, we installed the Menhir 160MHz
oscillator on a breadboad placed on top of
4 damped feet around the amplifier. |
|
|
259
|
Mon Aug 31 15:14:04 2026 |
Ronic Chiche | Under Process | info | lasers and optics | Optical room | Menhir oscillator phase noise measurement | measurements made with Alice:
comparison between the CW OEwaves
oscillator phase noise measured last week |
|
|
260
|
Mon Aug 31 16:15:46 2026 |
Ronic Chiche | Under Process | info | lasers and optics | Optical room | Menhir oscillator phase noise measurement | comparison of the Menhir 160MHz phase noise
with the CW reference.
- in blue, the oscillators are |
|
|
261
|
Mon Aug 31 16:28:31 2026 |
Ronic Chiche | Under Process | info | lasers and optics | Optical room | Menhir oscillator phase noise measurement | after the previous
measurement, we installed similar dampers,
than the ones used belows the aluminium breadboard, |
|