| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
273
|
Thu Nov 12 13:10:05 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | On Tuesday evening, we stopped the pump
to avoid overheating.
The vacuum level was around 0.7 mbar. |
|
|
272
|
Tue Nov 10 17:44:40 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | We changed M4 from C23018/12 to C23018/9.
The scattering losses of M4 go from 2.8-4ppm
to 6ppm. The new expected finesse is 41,501-42,454. |
|
|
271
|
Tue Nov 10 17:11:12 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | We changed M3 from C23018/11 to C23018/10.
The scattering losses of M3 go from 3.8-4.5ppm
to 11ppm. The expected finesse is then 42,056-43,392. |
6x |
|
270
|
Tue Nov 10 16:04:47 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | This afternoon we changed M2 from C23018/1
to C23018/3. The characteristics remain the
same, apart from the scattering losses that |
|
|
269
|
Tue Nov 10 11:14:11 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | This morning, I moved the D-shape far from
the beam.
The cavity was completely misaligned |
|
|
268
|
Mon Nov 9 17:18:31 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | Second finesse measurement after M2 had
been changed:
- Linewidth : 1.125 s <-> |
|
|
267
|
Mon Nov 9 17:00:25 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | Note: We had cleaned each mirror with ultrapure
water right before installing them in the
vacuum chamber. |
|
|
266
|
Fri Nov 6 16:30:36 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | We estimated the FSR and the finesse:
- FSR: 161.037MHz
- Linewidth: 0.770ms x 20kHz/s |
|
|
265
|
Wed Nov 4 17:01:36 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | ADD: We added the LaseLock to scan the
NKT laser wavelength and select the transverse
mode that resonates in the cavity before |
|
|
264
|
Wed Nov 4 16:11:19 2026 |
Alice Renaux | Under Process | report | lasers and optics | Optical room | Installation of a new cavity: the ABOX!! | We installed a 160MHz four-mirror OEC with
two planar mirrors and two spherical mirrors.
The radii of curvature of the spherical mirrrors |
|
|
263
|
Tue Sep 15 17:34:28 2026 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Menhir 160MHz optical spectrum | I took 2 pictures of the Menhir spectrum
after fiber injection.
Both spectra are centered roughly |
|
|
262
|
Wed Sep 9 17:03:56 2026 |
Ronic Chiche | Under Process | info | mechanics | lasers and optics | cabling | Optical room | Neolase amplifier installation | Here is the procedure to start the amplifier
properly:
1) Start the chiller and wait for |
|
|
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, |
|
|
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 |
|
|
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 |
|
|
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. |
|
|
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 |
|
|
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 ! |
|
|
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 |
|
|
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. |
|