| ID |
Date |
Author |
Status |
Type |
Category |
Location |
Title |
Text |
 |
|
88
|
Fri Feb 7 14:46:55 2020 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | Beam pulse duration | We installed the 2 CVBG for compression
after the amplifier.
We used an interferometric technique |
|
|
89
|
Wed Feb 12 17:43:43 2020 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | Beam pulse duration | Yesterday, Loic installed a telescope before
CVBG's to reduce the spot size on CVBG's
and reduced the incident angle 0.5-1° |
|
|
90
|
Fri Feb 14 09:26:07 2020 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | Beam pulse duration | Yesterday, Loïc put the CVBG's
back to their specified angles.
We used an interferometric technique |
|
|
91
|
Fri Feb 14 18:02:37 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Telescope for compressors and ThomX | CVBGs telescope is done with w ~= 1mm.
ThomX telescope is done with w
~= 2.3mm in x and y. |
|
|
92
|
Tue Feb 18 12:24:00 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | ThomX Locked with CVBGs | ThomX has been locked with a new telescope
while using compression CVBGs.
Coupling is ~50-55% and lock is stable. |
|
|
93
|
Wed Feb 19 17:21:28 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Powerup with 2.5ps pulses | A power up has been performed on ThomX
until 65kW intracavity power. We didn't
see any modes but stored power was really |
|
|
94
|
Mon Feb 24 16:28:52 2020 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | Beam pulse duration | Last Thursday (20th of February), Loïc
and Titouan realigned the stretcher CVBG
to its nominal angle and they used an interferometric |
|
|
95
|
Wed Feb 26 10:38:37 2020 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Optical spectrum analyzer resolution | The Koheras @0.5mW is directly connected
with fibers FC/APC -> FC/PC to the Avantes
optical spectrum analyzer. |
|
|
96
|
Wed Feb 26 11:05:09 2020 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Optical spectrum analyzer resolution | Same measurement with Koheras @100mW and
using fiber coupling lenses between Koheras
and Avantes OSA. |
|
|
97
|
Wed Feb 26 16:48:02 2020 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Optical spectrum before and after CVBG | Measurement of the optical spectrum with
Avantes OSA before (1st picture) and after
CVBG (2nd picture) with 2nd stage on the |
|
|
98
|
Fri Feb 28 09:20:37 2020 |
Ronic Chiche | Not Fixed | issue | lasers and optics | Optical room | Amplifier laser diodes issue | This is a long time issue for the ThomX
amplifier : on the 4 pumping diodes available,
the 1st diode has a higher temperature than |
|
|
99
|
Fri Feb 28 17:44:12 2020 |
Ronic Chiche | Fixed | report | lasers and optics | Optical room | Pointing stability with CVBG | Yesterday, with Titouan, we made some measurements
on pointing stability of the laser beam after
amplifier and CVBG. |
|
|
100
|
Tue Jun 16 13:03:52 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Finesse measurement after confinement | After 3 months without human presence,
finesse has been measured 3 times with
average optimization: |
|
|
101
|
Tue Jul 7 12:49:38 2020 |
Ronic Chiche | Fixed | info | lasers and optics | Optical room | Finesse measurement after the Edge installation | After the Edge installation inside the
cavity, the Finesse has been measured several
times by modulation technique with an average |
|
|
102
|
Tue Oct 27 13:13:50 2020 |
Loïc Amoudry | Fixed | info | lasers and optics | Optical room | Coating reflectivity | Coatings reflectivity curves and datas
for HR Saphir, HR Suprasil and HR ULE. |
6x |
|
103
|
Fri Nov 6 14:23:16 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Beam size and finesse | Measurement behind P4 (planar mirror)
|
|
|
104
|
Fri Dec 18 16:10:04 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Onefive ouput power and spectrum | After turning on, one can see the 133.33MHz
Onefive output power for ~40min with OD2
filter (~/20). So the real output power is |
|
|
105
|
Fri Dec 18 17:06:53 2020 |
Loïc Amoudry | Fixed | report | lasers and optics | Optical room | Onefive ouput power and spectrum | 1) Note: The OneFive laser used for
experimenting is the one for the SBox
but, for now only this laser arrived |
|
|
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 |
|
|
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 |
|