| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
17
|
Tue Feb 19 15:50:08 2019 |
Loïc Amoudry | Fixed | info | mechanics | Optical room | Motors connexions | Motors are connected. The true mirror's
name are P1 for injection mirrors, S2, S3
and P4. (S=spherical, P=planar). |
|
|
18
|
Tue Mar 19 16:35:32 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Beam size and finesse | FSR initiale : 33.34 MHz (S3 = -825000
et S4 = -825000)
Beam size initiale : wx=2.05mm |
|
|
19
|
Tue Mar 19 17:01:52 2019 |
Loïc Amoudry | Fixed | issue | mechanics | Optical room | Motors Z axis reversed | S2 and S3 z-axis are initially at 1/4 (5mm/20mm) of
there range over ~20mm range. This is meant
to be able to spread them up to ~15mm in |
|
|
20
|
Fri Mar 22 17:53:10 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | vacuum | Optical room | Cavity at atm pressure | Dry air injected into the cavity.
Lock has been proceeded without
any trouble. ~~4000 finesse. Considered to |
|
|
21
|
Tue Mar 26 18:26:32 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Check of mirrors and coating directions | Direction of HR face of P1 and P4 have
been checked, there was no problem. The mirrors
are in the good direction and the coating |
|
|
22
|
Tue Mar 26 18:32:40 2019 |
Loïc Amoudry | Fixed | report | mechanics | lasers and optics | cabling | Optical room | Wires in laser path | There was some ceramic wires close to the
beem path right before P4. We moved them
away (we can imagine they could move again |
|
|
23
|
Thu Mar 28 09:25:58 2019 |
Loïc Amoudry | Fixed | issue | mechanics | Optical room | Motors Z axis reversed | All Z motors (for P1, S2, S3 and P4) have
been initialized again with a proper HOME
command with their own controller with |
|
|
25
|
Tue Apr 2 17:59:18 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Finesse after removing wires | 19/04/01: We removed the wires from the
beam path in the cavity. Finesse stayed at
3400. FSR: 33.342 MHz. |
|
|
26
|
Tue Apr 2 18:03:31 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Transmission of the mirrors | We openned the cavity, removed S2 and measured
trans of P1 and same for S2.
Pin ~= 3.91 mW |
|
|
27
|
Tue Apr 2 18:05:46 2019 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Beam size at closest spherical mirrors position | S3 and S2 @ +1 640 000 and P1 and P4 @
-825 000
Diameter in x: 4.7mm |
|
|
28
|
Thu Apr 4 09:42:12 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Transmission of the mirrors | After verification, transmission of P1
correspond to ~150ppm.
The 1337ppm come from a beam leakage. |
|
|
29
|
Fri Apr 5 11:18:47 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Transmission of the mirrors | P1 transmission out of the mount (means
angle of the mirror is not the real angle):
Pin = 3.2 mW |
|
|
30
|
Fri Apr 5 11:28:39 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Finesse with P1 SUPRASIL | P1 SUPRASIL has been installed instead
of P1 Sapphire. It has been cleaned 3 times
on each face with wipe+isopropanol before |
|
|
31
|
Mon Apr 8 10:18:31 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Finesse after 2days | Finesse measured this morning after P1
SUPRASIL being into the cavity for two
days. In order to check if it's getting |
|
|
32
|
Mon Apr 8 11:55:40 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | P4 cleaned and finesse measurement | P4 cleaned with isopropanol.
Finesse measured afterward: ~=13
000 (clear increase) |
|
|
33
|
Wed Apr 10 13:11:46 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Mirror's cleaning and finesse | Summary of what have been cleaned
the last week:
P1 with isopropanol, finesse 11000 |
|
|
34
|
Thu Apr 18 16:07:23 2019 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Injection of 33MHz Onefive through fiber | Output power of the Onefive, and power
after injection and different components
have been measured. |
|
|
35
|
Thu Apr 18 16:17:53 2019 |
Loïc Amoudry | Fixed | issue | lasers and optics | Optical room | 33MHz Onefive power overtime decrease | Power of the 33MHz Onfive decreases over
time. Have to pay attention to that.
Note that air dryers have never been |
|
|
36
|
Tue May 21 17:44:46 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | New Suprasil mirror from LMA | 14/05/19:
New Suprasil mirror received. It
will replace the S-BOX suprasil mirror on |
|
|
37
|
Tue May 21 17:49:30 2019 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Finesse after cleaning (new suprasil mirror) | 15/05/19-20/05/19:
Cleaning of the mirrors:
Initial finesse 14000 @air |
|