| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
3667
|
Thu Oct 7 14:39:50 2010 |
yuta | Update | PSL | measured PMC's laser power-output relation | (Rana, Yuta)
Motivation: |
|
|
3669
|
Thu Oct 7 15:05:46 2010 |
Koji | Update | PSL | measured PMC's laser power-output relation | It was a bit difficult to comprehend the
result.
Is it good? or bad? Have you seen |
|
|
3670
|
Thu Oct 7 15:21:51 2010 |
steve | Update | PSL | RF filter for PMC | We got two small RF filter for the PMC
from Valera They are made by http://www.larkengineering.com/
"MC35.5-3-AB" sma, 29300-01 |
|
|
3672
|
Thu Oct 7 16:34:06 2010 |
yuta | Update | PSL | measured PMC's laser power-output relation | Result2:
Attached is the visibility vs
incident power(assuming output of the PD |
|
|
3698
|
Tue Oct 12 16:35:17 2010 |
steve | Configuration | PSL | PSL output monitor in place | Innolight
PSL laser is set to @2.1A , ~1.6W output |
|
|
3709
|
Wed Oct 13 21:08:40 2010 |
kiwamu | Update | PSL | NPRO is still alive | The
NPRO at the PSL table still can generate |
|
|
3717
|
Thu Oct 14 12:53:29 2010 |
yuta | Update | PSL | mesured PMC's visibility vs power relation | Background:
I measured the PMC's visibility
vs incident power relation last week to see |
|
|
3743
|
Tue Oct 19 22:37:28 2010 |
Koji | Update | PSL | PSL table cleaning up | I cleaned up the scattered tools, optics,
and mounts of the PSL table. I gathered those
stuffs at the two coners. |
|
|
3747
|
Wed Oct 20 21:33:11 2010 |
Kevin | Update | PSL | Quarter Wave Plate Optimization | [Suresh and Kevin]
We placed the quarter wave plate
in front of the 2W laser and moved the half |
|
|
3755
|
Thu Oct 21 18:45:50 2010 |
Koji | Update | PSL | Found the beat at 1064nm | [Koji Suresh]
We found the beat at 1064nm. T(PSL)=26.59deg, |
|
|
3756
|
Thu Oct 21 19:10:39 2010 |
Aidan | Update | PSL | Found the beat at 1064nm | |
|
|
3759
|
Fri Oct 22 01:23:13 2010 |
Koji | Update | PSL | Found the beat at 1064nm | [Koji / Suresh]
We worked on the 1064 beating a bit
more. |
|
|
3760
|
Fri Oct 22 03:37:56 2010 |
Kevin | Update | PSL | Quarter Wave Plate Measurements | [Koji and Kevin]
We measured the reflection from the
PBS as a function of half wave plate rotation |
|
|
3768
|
Sat Oct 23 02:25:49 2010 |
Kevin | Update | PSL | Quarter Wave Plate Measurements |
|
|
|
3776
|
Mon Oct 25 02:25:21 2010 |
Koji | Update | PSL | Quarter Wave Plate Measurements | Q1. Suppose the laser beam has a certain
(i.e. arbitrary) polarization state but contains
only TEM00. Also suppose the PSB is perfect |
|
|
3781
|
Tue Oct 26 00:45:08 2010 |
rana | Update | PSL | New NPRO Diagnostic Wiring | |
|
|
3801
|
Wed Oct 27 21:51:29 2010 |
Suresh | Update | PSL | Attenuation of PSL NPRO removed | The laser
power was attenuated to 40 mW yesterday for
ensuring that the power built up within the |
|
|
3802
|
Thu Oct 28 02:01:51 2010 |
Kevin | Update | PSL | Filter for 2W Laser | [Rana and Kevin]
I made a low pass filter for the
piezo driver for the 2W laser that is now |
|
|
3818
|
Fri Oct 29 04:58:04 2010 |
Kevin | Update | PSL | PBS Optimization | [Koji and Kevin]
Since there was still a lot of power
being reflected from the PBS before the Faraday |
|
|
3819
|
Fri Oct 29 05:40:51 2010 |
kiwamu | Update | PSL | wideband EOM aligned : AM decreased by 24dB | At the
PSL table I aligned the wideband EOM more |
|
|
3825
|
Fri Oct 29 16:03:35 2010 |
kiwamu | Update | PSL | wideband EOM : installed the triple resonant box |
|
|
|
3856
|
Wed Nov 3 19:14:00 2010 |
rana | Update | PSL | PMC mode matching update | I moved the lens just before the PMC to
check the mode matching landscape. The PMC
trans went up from ~6.5 to ~6.8. That's 5% |
|
|
3899
|
Thu Nov 11 18:05:55 2010 |
valera | Update | PSL | PMC mode matching at full laser power | The
PMC mode matching was initially done at low
power ~150 mW. It was expected and found |
|
|
3909
|
Fri Nov 12 13:12:55 2010 |
kiwamu | Update | PSL | increased NPRO power | I maximized
the laser power by rotating the HWP after |
|
|
3921
|
Mon Nov 15 14:36:37 2010 |
Koji | Update | PSL | C1PSL rebooted? | Has C1PSL rebooted? Has burtrestore been
forgotten? Even without elog?
We found some settings are wrong |
|
|
3922
|
Mon Nov 15 14:42:01 2010 |
Aidan | Update | PSL | C1PSL rebooted? | Yeah. Joe and I rebooted c1psl a couple
of times this morning. I didn't realize the
burtrestore wasn't automatic. |
|
|
3924
|
Mon Nov 15 15:02:00 2010 |
Koji | Summary | PSL | power measurements around the PMC | [Valera Yuta Kiwamu Koji]
Kiwamu burtrestored c1psl. We measured
the power levels around the PMC. |
|
|
3951
|
Thu Nov 18 23:45:18 2010 |
rana | Configuration | PSL | PMC Refl Cam | Valera
and Haixing and I installed a PMC REFL camera |
|
|
4128
|
Sun Jan 9 15:50:55 2011 |
rana | HowTo | PSL | Setting the PMC gain | |
|
|
4137
|
Tue Jan 11 17:08:43 2011 |
Suresh | Configuration | PSL | replaced the pzt-steering mirror on PSL | [Rana,
Jenne, Suresh]
Yesterday, |
|
|
4223
|
Fri Jan 28 15:50:44 2011 |
Jenne | Configuration | PSL | The PSL has a name! | Back in the days when we were talking about
getting a new 2W PSL, I was given naming
rights by Rana for this new laser. |
|
|
4258
|
Mon Feb 7 21:23:11 2011 |
rana | Configuration | PSL | PSL FSS Temperature Sensor Interface box removed | I noticed that the RMTEMP channel was spiking
myteriously when Kiwamu opened the PSL door.
We found out that the LEMO connectors would |
|
|
4301
|
Tue Feb 15 11:57:06 2011 |
steve, valera | Configuration | PSL | PMC swap | We swapped the PMC s/n 2677 for s/n
lho006.
The table below summarizes the power |
|
|
4350
|
Thu Feb 24 16:47:26 2011 |
steve | Configuration | PSL | shutter is back on the PSL output | Uniblitz mechanical shutter was placed
into the beam path of the PSL output with
razor beam trap. The output power was 1.39W |
|
|
4375
|
Thu Mar 3 20:30:03 2011 |
rana | Summary | PSL | PMC Sweeps @ different input power levels to measure the Finesse | Its been well
noted in the past that sweeping the PMC
at high power leads to a distortion of the |
|
|
4417
|
Mon Mar 21 13:26:25 2011 |
Koji | Update | PSL | PMC Trans/RFPDDC | PMC TRANS/REFL on MEDM showed red values
for long time.
TRANS (a.k.a C1:PSL-PSL_TRANSPD) was |
|
|
4429
|
Wed Mar 23 09:48:20 2011 |
steve | Update | PSL | PSL enclosure: gets new window & laser | Solid door, numbered 4 at south west corner
of PSL enclosure was replaced by laser protective
window. |
|
|
4452
|
Mon Mar 28 21:12:14 2011 |
Jenne | Update | PSL | New PMC Base Riser Design | I (think) I have finished the new PMC base
riser. The eDrawing of it (so you can
view it on any computer) has been uploaded |
|
|
4453
|
Mon Mar 28 22:56:14 2011 |
rana | Update | PSL | New PMC Base Riser Design | Its going to need some kind of way to locate
the PMC on the top. In the previous design,
we had the 3 balls to decouple the body from |
|
|
4454
|
Mon Mar 28 23:51:54 2011 |
Jenne | Update | PSL | New PMC Base Riser Design |
|
|
|
4496
|
Thu Apr 7 11:38:56 2011 |
steve | Update | PSL | enclosure windows on the east side of the PSL | The PSL enclosure now have 4 windows on
each side. The bottom rail guides on the
east side will be replaced by one |
|
|
4633
|
Thu May 5 10:19:22 2011 |
steve | Update | PSL | PSL-FSS_RMTEMP is back | Valera and I installed the the temp sensor
and the interface box that Rana fixed. This
may help with diagnosing the PSL drift. |
|
|
4635
|
Thu May 5 13:12:06 2011 |
Jenne | Update | PSL | Temperature drift, trying to shield PMC with foil | eeek. I've been running around
all day, so this is an incomplete elog.
I'll fill in more stuff in the next hour |
|
|
4641
|
Thu May 5 15:05:06 2011 |
steve | Update | PSL | PSL-FSS_RMTEMP is not back |
|
|
|
4648
|
Thu May 5 20:47:41 2011 |
Koji | Update | PSL | PMC aligned | The PMC exhibited the reduction of the
transmission, so it was aligned.
The misalignment was not the angle |
|
|
4662
|
Sun May 8 22:59:40 2011 |
rana | Update | PSL | PSL reference cavity temperature box modifications | I looked at the PSL temperature box. It
started out as D980400-B-C. Then it was revised
by Peter King as per the LHO mods E020247. |
|
|
4663
|
Mon May 9 09:37:51 2011 |
valera | Update | PSL | PSL and MC trends | The attached plot shows 7 day trends of
the MC and PMC power levels, PSL QPDs, and
temperature. The MC stayed locked for ~40 |
|
|
4666
|
Mon May 9 15:21:36 2011 |
josephb | Update | PSL | Fixed channel names for PSL QPDs, fixed saturation, changed signs | [Valera,
Joe]
Software |
|
|
4672
|
Mon May 9 20:30:20 2011 |
rana | Update | PSL | PSL reference cavity temperature box modifications | I re-installed the box (@ ~8:15) after
reflowing some of the solder joints. I will
observe it over night and then remove the |
|
|
4677
|
Tue May 10 10:06:23 2011 |
josephb | Update | PSL | Fixed channel names for PSL QPDs, fixed saturation, changed signs | I added calculation entries to the /cvs/cds/caltech/target/c1iool0/c1ioo.db
file which are named C1:IOO-QPD_*_*, as the
channels were originally named. These |
|