| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
17
|
Wed Oct 31 13:48:58 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | M1 transmission measurement | Center of M1:
I |
|
|
18
|
Wed Oct 31 13:51:17 2018 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Change of the 3 ULE mirrors by 3 spare ULE mirrors | First finesse measurement 20 266, FSR 133.351
MHz under vacuum |
|
|
19
|
Wed Oct 31 14:03:22 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | M4 transmission measurement | The kept transmission for M4 is
2.17 ppm. Which is the value
measured after alignement (center of the |
|
|
20
|
Wed Oct 31 14:04:50 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | M4 transmission measurement |
Loïc |
|
|
21
|
Wed Oct 31 14:06:17 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | M1 transmission measurement | At different positions, transmission give
194, 193, 208, 200 ppm?
|
|
|
22
|
Mon Nov 5 13:11:08 2018 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | First run with spare mirrors |
I (A)
|
|
|
23
|
Thu Nov 15 13:02:44 2018 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Mirrors cleaning | The new mirrors didn't give expected
results. Then the 4 old mirrors have been
sent to LMA on 12/11/18 for a cleaning and |
|
|
24
|
Fri Dec 21 13:42:43 2018 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Mirrors features, come back from LMA | Mirrors arrived today from LMA. Their features
are damaged.
Photos avant ou après nettoyage, |
|
|
25
|
Thu Jan 24 17:44:21 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Deposit on S-box mirrors after return from LMA | Cleaning on dirty surface shows something
is deposited on the surface. Cleaning displaces
and removes part of the deposit. |
|
|
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 ? |
|
|
58
|
Wed Jun 19 18:54:00 2019 |
Huan Wang | Fixed | info | lasers and optics | Optical room | amplifier | Onefive output power is 24mW now, and 2.41mW(after
EOM) injected into fiber,
a injection power monitor |
|
|
59
|
Mon Jun 24 16:15:08 2019 |
Huan Wang | Fixed | info | lasers and optics | Optical room | amplifier | I just had a phone call with Jérome
and he told me 2 things :
* Be carefull ! the MightyLaser |
|
|
30
|
Fri Dec 6 11:53:53 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Mirror's cleaning | XPS has been proceeded on the 400kW SBOX
mirrors M3 and M4 (the initial cavity spherical
mirrors) in frebruary 2019. Deposited a lot |
|
|
31
|
Fri Dec 6 11:54:58 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Mirror's installed | The initial 400kW SBOX mirrors which have
been cleaned ont 28th of november have been
installed this morning on the SBOX. |
|
|
32
|
Tue Dec 10 09:36:56 2019 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | FSR and Finesse measurement | Yesterday the cavity has been aligned and
locked with the CW Koheras laser.
the FSR has been measured by modulation |
|
|
33
|
Wed Dec 11 17:13:02 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | Optical room | 2nd stage amplifier issue | the 2nd stage amplifier needed several
hours (4-5h) to reach its nominal power (we
look at photodiode level on a scope), instead |
|
|
34
|
Thu Dec 12 11:49:05 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | Optical room | 2nd stage amplifier issue | Last time, we switched ON directly the
2nd stage at 6A without increasing/decrinsing
slowly the current. |
|
|
35
|
Fri Dec 13 15:56:22 2019 |
Ronic Chiche | Fixed | issue | lasers and optics | Optical room | 2nd stage amplifier issue | 2nd stage output power was going down.
We checked the pump diode technical data
sheet and the operating temperature is [25°C:35°C]. |
|
|
36
|
Fri Dec 13 18:28:00 2019 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | first data with 3A on the 3rd stage | Today, at 3A on the 3rd stage, we saw some
HOM effects.
the transmissions is about 100mW which |
|
|
37
|
Tue Dec 17 10:46:24 2019 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Beam size behind M2 | Beam diameter behind M2 :
- 2nd stage @ 6A - 1kW inside cavity
sx = 2120 µm |
|