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  Coating Ring-down Measurement Lab elog, Page 17 of 18  Not logged in ELOG logo
New entries since:Wed Dec 31 16:00:00 1969
ID Date Author Typeup Category Subject Text Attachments
  853   Fri Mar 27 15:32:29 2020 GabrieleGeneralMeasurementsS1600789 S16007912020-03-27


3:31pm in
chamber

S1600789 in CR1
S1600791
in CR2


3:32pm
  
  854   Tue Mar 31 13:12:21 2020 AlenaGeneralMeasurementsS1600784 S1600785 S1600789 S16007912020-03-31


1:00 pm
in chamber

S1600784in CR1
S1600785
in CR2
S1600789 in CR3
S1600791
  
  855   Tue Mar 31 18:56:31 2020 GabrieleGeneralMeasurementsS1600775 S16007882020-03-31


7:05pm in
chamber

S1600775 in CR1
S1600788
in CR2


7:09pm
  
  856   Thu Apr 2 14:07:18 2020 GabrieleGeneralMeasurementsS1600784 S1600785 S1600789 S16007912020-04-02


2:05 pm
in chamber

S1600784 in CR1
S1600785
in CR2
S1600789 in CR3
S1600791
  
  857   Fri Apr 3 10:26:00 2020 GabrieleGeneralMeasurementsS1600775 S16007882020-04-03


10:24am
in chamber

S1600775 in CR1
S1600788
in CR2


10:25am
  
  858   Tue Apr 7 10:06:43 2020 GabrieleGeneralMeasurementsS1600775 S1600784 S1600788 S16007912020-04-07


10:05 am
in chamber

S1600775 in CR1
S1600784
in CR2
S1600788 in CR3
S1600791
  
  859   Tue Apr 7 15:50:24 2020 GabrieleGeneralMeasurementsS1600785 S16007892020-04-07


3:50pm in
chamber

S1600785 in CR1
S1600789
in CR2


3:53pm
  
  860   Thu Apr 9 13:47:38 2020 GabrieleGeneralMeasurementsS1600775 S1600784 S1600788 S16007912020-04-09


1:46 pm
in chamber

S1600775 in CR1
S1600784
in CR2
S1600788 in CR3
S1600791
  
  861   Fri Apr 10 10:20:01 2020 GabrieleGeneralMeasurementsS1600785 S16007892020-04-10


10:17am
in chamber

S1600785 in CR1
S1600789
in CR2


10:20am
  
  862   Tue Apr 14 12:19:57 2020 GabrieleGeneralMeasurementsS1600775 S1600784 S1600788 S16007912020-04-14


12:18 pm
in chamber

S1600775 in CR1
S1600784
in CR2
S1600788 in CR3
S1600791
  
  863   Tue Apr 14 18:35:59 2020 GabrieleGeneralMeasurementsS1600785 S16007892020-04-14


6:35pm in
chamber

S1600785 in CR1
S1600789
in CR2


6:40pm
  
  864   Thu Apr 16 14:23:11 2020 GabrieleGeneralMeasurementsS1600775 S1600784 S1600788 S16007912020-04-16


2:21 pm
in chamber

S1600775 in CR1
S1600784
in CR2
S1600788 in CR3
S1600791
  
  865   Fri Apr 17 10:18:17 2020 GabrieleGeneralMeasurementsS1600785 S16007892020-04-17


10:17am
in chamber

S1600785 in CR1
S1600789
in CR2


10:20am
  
  866   Thu Apr 23 14:02:25 2020 GabrieleGeneralMeasurementsS16007762020-04-23


2:00pm in
chamber

S1600776 in CR1


2:02pm
roughing pump on
2:12pm turbo
  
  867   Fri Apr 24 10:53:40 2020 GabrieleGeneralMeasurementsS1600801 S1600802 S1600803 S16008042020-04-24


10:51 am
in chamber

S1600801 in CR1
S1600802
in CR2
S1600803 in CR3
S1600804
  
  868   Mon Apr 27 10:26:29 2020 GabrieleGeneralMeasurementsS1600805 S1600806 S1600807 S16008082020-04-24


10:25 am
in chamber

S1600805 in CR1
S1600806
in CR2
S1600807 in CR3
S1600808
  
  869   Thu May 28 11:43:19 2020 GabrieleGeneralMeasurementsS1600801 S1600802 S1600803 S1600805 S16008062020-05-28


11:40 am
in chamber

S1600801 in CR1
S1600802
in CR2
S1600803 in CR3
S1600805
  
  870   Fri May 29 10:10:51 2020 GabrieleGeneralMeasurementsS16008062020-05-28


10:00 am
in chamber

S1600806 in CR1


10:05
am roughing pumps on
10:15 am
  
  871   Tue Jun 2 10:16:40 2020 GabrieleGeneralMeasurementsS1600801 S16008022020-06-02


10:15 am
in chamber

S1600801 in CR1
S1600802
in CR2


10:20 am
  
  872   Fri Jun 5 18:55:27 2020 GabrieleGeneralMeasurementsS1600803 GaAs2020-06-05


6:50 pm
in chamber

S1600803 in CR1
GaAs
in CR2


6:55 pm
  
  873   Tue Jun 9 11:04:28 2020 GabrieleGeneralMeasurementsGaAs S16008052020-06-09


11:00 am
in chamber

GaAs in CR1
S1600805
in CR2


11:04 am
  
  874   Mon Jun 15 19:32:31 2020 GabrieleGeneralMeasurementsS1600803 GaAs2020-06-15


7:32 pm
in chamber

S1600803 in CR1
GaAs
in CR2


7:36 pm
  
  875   Tue Jun 16 15:43:29 2020 GabrieleGeneralMeasurementsS16008052020-06-16


3:42 pm
in chamber

S1600805 in CR1


3:45
pm roughing pumps on
3:55 pm turbo
  
  876   Thu Jun 18 17:46:51 2020 GabrieleGeneralMeasurementsS16008062020-06-18


5:45 pm
in chamber

S1600806 in CR1


5:50
pm roughing pumps on
6:00 pm turbo
  
  877   Tue Jun 23 16:22:42 2020 GabrieleGeneralMeasurementsS16008062020-06-23


4:20 pm
in chamber

S1600806 in CR1


4:21
pm roughing pumps on
4:31 pm turbo
  
  878   Wed Jun 24 14:17:45 2020 GabrieleGeneralMeasurementsS1600805 S16008062020-06-24


2:26 pm
in chamber

S1600805 in CR1
S1600806
in CR1


2:27 pm
  
  879   Thu Jun 25 08:49:24 2020 GabrieleGeneralMeasurementsS1600803 S1600805 S16008062020-06-25


8:47 am
in chamber

S1600803 in CR1
S1600805
in CR2
S1600806 in CR3


8:49
  
  880   Wed Jul 1 13:43:53 2020 GabrieleGeneralMeasurementsS1600803 in2020-07-01


1:42 pm
in chamber

S1600803 in CR1


1:43
pm roughing pumps on
1:53 pm turbo
  
  881   Thu Jul 2 14:43:09 2020 GabrieleGeneralMeasurementsS1600794 S1600795 S1600796 S16007972020-07-02


2:41 pm
in chamber

S1600794 in CR1
S1600795
in CR2
S1600796 in CR3
S1600797
  
  882   Tue Jul 7 15:40:44 2020 GabrieleGeneralMeasurementsS1600809 S1600810 S160081 S16008122020-07-02


3:39 pm
in chamber

S1600809 in CR1
S1600810
in CR2
S1600811 in CR3
S1600812
  
  15   Thu May 19 11:36:04 2016 GabrieleMechanicsDesignA first design of the disk assemblyHere are some screenshots of the disk assembly
and a look at how four of them will sit into
the vacuum chamber. The Solidworks models
 Screen_Shot_2016-05-18_at_3.41.06_PM.pngScreen_Shot_2016-05-18_at_3.40.43_PM.pngScreen_Shot_2016-05-18_at_3.41.25_PM.pngScreen_Shot_2016-05-18_at_3.41.33_PM.pngScreen_Shot_2016-05-18_at_3.41.25_PM.png 
  19   Fri May 27 02:09:37 2016 GabrieleMechanicsCharacterizationLowest usable mode of fused silica disksI did some FEA simulation of fused silica
disks, to identify the lowest usable eigenmode.
By usable I mean a mode that has zero elastic
 disk_75mm_0.12mm.pngdisk_75mm_1mm.pngdisk_100mm_0.4mm.pngdisk_200mm_0.4mm.png 
  76   Wed Aug 10 10:04:35 2016 GabrieleMechanicsDaily ProgressThe prototype of the disk retain system is hereYesterday we received the prototype of
the disk suspension and retain system. Everything
looks good. I checked that the disk fits
 6x 
  124   Fri Sep 23 08:11:48 2016 GabrieleMechanicsDaily ProgressTest of the disk retaining ring motionIn brief, it doesn't work. The magnets
and coils are strong enough to push up the
ring with a sample inside, but the friction
  
  189   Tue Nov 15 10:35:11 2016 GabrieleMechanicsDaily ProgressParts for laser polishing setup are hereThe parts all fit as expected. They're
mounted on the stages.

 2016-11-15_10.17.28.jpg2016-11-15_10.17.36.jpg2016-11-15_10.17.42.jpg 
  266   Thu Jan 19 14:16:53 2017 GabrieleMechanicsDesignNew concept for retaining ring motionSince my experiment with coil and magnets
didn't work out very well, here's
a new concept for the motion of the four
 7x 
  284   Tue Jan 31 11:21:44 2017 GabrieleMechanicsDaily ProgressRetaining ring mechanicsAll parts for the motion of the retaining
rings have been received and are ok. We're
going to clean and bake them. 
 2017-01-31_10.30.45.jpg2017-01-31_10.30.34-1.jpg 
  303   Fri Feb 10 17:16:28 2017 GabrieleMechanicsDaily ProgressTranslation stage to move retaining ringsThis afternoon I installed the picomotor
and the translation stage that will be used
to move the retaining rings up and down.
 2017-02-10_16.32.55.jpg2017-02-10_16.33.03.jpg 
  304   Sat Feb 11 16:22:26 2017 GabrieleMechanicsDaily ProgressTranslation stage to move retaining ringsThe ring motion up and down was not very
smooth, again due to friction on the centering
pins.
  
  405   Thu Aug 10 13:36:08 2017 Gabriele, ZachMechanicsConfigurationESD moved closer to disk in CR0We first measured the distance of the ESD
from the disk in the test chamber (CR0).
We had to remove the retaining ring to have
  
  406   Fri Aug 11 09:22:21 2017 GabrieleMechanicsConfigurationESD moved closer to disk in CR0The plots below compare the SNR and peak
amplitude of all excited modes, in the new
and old configuration. The new confgiuration
 esd_ampl.pngesd_snr.png 
  1   Wed Jul 11 23:01:01 2012 janoschOpticsCharacterizationstarting the multi-color scatter experimentSteve Maloney, a visiting highschool teacher,
and I have started to set up a new scattering
experiment in the Richter lab. The idea is
 DSCF3148.JPGDSCF3151.JPGDSCF3150.JPG 
  2   Fri Jul 13 10:34:35 2012 janoschOpticsCharacterizationcamera imageWe were confused a bit about how the camera
image changes when you move the arm that
holds the camera and lens around the
  
  3   Fri Jul 13 20:53:35 2012 janoschOpticsCharacterizationtwo imagesThe following two pictures were taken from
the same angle with green (left) and red
(right) incident laser at an angle of 15deg
 Green.pngRed.png 
  4   Tue Jul 17 18:32:11 2012 janoschOpticsCharacterizationpurple imagesWe have the new 405nm laser pointer. 
The image to the left shows the scattered
light from the red laser, the image to the
 Red_30deg.pngPurple_30deg.png 
  5   Wed Jul 18 18:43:34 2012 janoschOpticsCharacterizationgone with the windHere a little purple video. It starts with
scattering angle around 15deg and stops at
about 80deg. 
 Purple.avi 
  6   Fri Jul 20 18:35:42 2012 janoschOpticsCharacterizationpurple improvements and first uncalibrated BSDF curvesToday we improved alignment of the lens-camera
arm. We discovered earlier that this alignment
affects the amount of "snowfall"
 Purple.mp4Red.mp4Purple_BSDF.pngRed_BSDF.png 
  7   Tue Jul 24 10:59:59 2012 janoschOpticsCharacterizationsum of purple and redWe played around with Matlab today. The
first step was to convert light wavelengths
into RGB colors. In this way we can combine
 ImageSum.png 
  8   Fri Oct 12 16:23:20 2012 janoschOpticsDaily Progressreassembled setupNothing has happened since Steve, the visiting
highschool teacher, has left. Meanwhile,
some parts of the multi-color BRDF setup
  
  16   Fri May 20 15:18:58 2016 GabrieleOpticsDesignOptical levers layoutAttached a first layout of the optical
lever systems. The beam spot radius on the
QPD is about 0.8 mm, and the lever arm length
 crime_v1.pdf 
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