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ID Date Author Typeup Category Subject Text Attachments
  94   Mon Sep 13 18:24:52 2010 AidanLaserHartmann sensorEnclosure for the HWSI've assembled the box Mindy ordered from
Newport that will house the Hartmann sensor.
It's mainly to reduce ambient light, air
 00001.jpg00002.jpg00003.jpg00005.jpg 
  95   Tue Sep 28 10:41:32 2010 AidanLaserHartmann sensorAligning HWS cross-sample experiment - polarization issuesI'm in the process of aligning the cross-sampling
experiment for the HWS. I've put the 1"
PBS cube into the beam from the fiber-coupled
  
  96   Tue Sep 28 17:53:40 2010 AidanLaserHartmann sensorCrude alignment of cross-sampling measurementI've set up a crude alignment of the cross-sampling
system (optical layout to come). This was
just a sanity check to make sure that the
 2010_09_28-HWS_cross_sample_expt_crude_alignment_01.pdf 
  97   Wed Sep 29 16:49:36 2010 AidanLaserHartmann sensorCross-sampling experiment power budgetI've been setting up the cross-sampling
test of the Hartmann sensor, Right now I'm
waiting on a 50/50 BS so I'm improvising
 00001.jpg 
  98   Mon Oct 4 19:44:03 2010 AidanLaserHartmann sensorCross-sampling experiment - two beams on HWSI've set up the HWS with the probe beam
sampling two optics in a Michelson configuration
(source = SLED, beamsplitter = PBS cube).
 test001_two_beams_on_HWS.pdf 
  99   Tue Oct 5 12:51:16 2010 AidanLaserHartmann sensorVariable power in two beams of cross-sampling experimentThe SLED in the cross-sampling experiment
produces unpolarized light at 980nm. So I
added a PBS after the output and then a HWP
 test002_two_beams_on_HWS_analyze.pdfHartmann_Enclosure_Diagram__x-sampling.png 
  107   Fri Feb 18 14:53:50 2011 PhilLaserLaserLTG laser delivering specified powerI got the LTG CO2 laser to deliver 50.02W
as measured by the Thorlabs 200W power head
today. This required running the Glassman
  
  110   Thu Feb 24 10:23:31 2011 Christopher GuidoLaserLaserLTG initial noiseCheryl Vorvick, Chris Guido, Phil Willems
Attached is a PDF with some initial
noise testing. There are 5 spectrum plots
 LTG_InitialTest.pdf 
  128   Mon Mar 28 13:00:50 2011 AidanLaserHartmann sensorTo do: Check the polarization from the SLED    
  129   Wed Mar 30 12:55:54 2011 AidanLaserHartmann sensorPrism modulation experimentI've set up a quick experiment to modulate
the angle of the Hartmann sensor probe beam
at 10mHz and to monitor the measured prism.
  
  130   Thu Mar 31 11:27:02 2011 AidanLaserHartmann sensorPrism modulation experimentI changed the drive amplitude on the function
generator to 0.05Vpp and have measured the
angle of deflection by bouncing a laser off
  
  137   Sun Apr 17 21:55:51 2011 AidanLaserHartmann sensorHartmann sensor prism/displacement testI've set up an experiment to test the HWS
intensity distribution displacement measurement
code. Basically the beam from a SLED is just
 HWS_prims.jpg 
  151   Mon May 30 10:53:00 2011 AidanLaserHartmann sensorDefocus vs time I've had the output from a fiber
projected about 400mm onto the Hartmann sensor
for around 5 days now. (The divergence angle
 HWS_defocus_vs_temperature.pdf 
  152   Mon May 30 20:11:27 2011 AidanLaserHartmann sensorHartmann sensor lever arm calibration I ran through the procedure to calibrate
the lever arm of the Hartmann sensor. The
beam from a 632.8nm HeNe laser was expanded
  
  153   Thu Sep 1 15:51:38 2011 AidanLaserOrderingAccess Lasy50 50W laser arrived. The 50W Access Laser is now in the
lab. We need to wire up the interlock to
the laser, plumb the chiller lines to the
  
  186   Mon Jun 5 16:41:59 2017 AidanLaserHartmann sensorHWS long term measurement results.The data from the long-term measurement
of the HWS is presented here. The beam envelope
moves by, at most, about 0.3 pixels, or around
 HWS_envelope_long_term.pdfHWS_optical_parameters_long_term.pdfHWS_envelope_long_term_mm.pdfIMG_9836.JPG 
  193   Mon Oct 23 19:02:42 2017 Jon RichardsonLaserHartmann sensorMitigated Heating Beam LossesThere were known to be huge (65%) heating
beam power losses on the SRM AWC table, somewhere
between the CO2 laser and the test optic.
  
  200   Mon Oct 30 17:13:32 2017 Jon RichardsonLaserHartmann sensorWrite-Up of CO2 Projector MeasurementsFor archive purposes, attached is a write-up
of all the HWS measurements I've made
to date for the SRM CO2 projector mock-up.
 awc_srm_actuator_v1.pdf 
  204   Thu Jan 18 10:09:50 2018 Jon RichardsonLaserGeneralRIN Measurement of 400 mW CO2 Laser in ProgressThe 400 mW CO2 laser on the Hartmann table
is currently configured for a measurement
of its relative intensity noise. It is aligned
  
  205   Mon Jan 22 10:39:32 2018 Jon RichardsonLaserGeneralRIN Measurement of 400 mW CO2 Laser in ProgressAttached for reference is the RIN measurement
from the initial data.

 SRM_CO2_RIN_v1.pdf 
  207   Thu Feb 8 15:42:13 2018 AidanLaserLaserLow power CO2 laser [400mW] beam size measurementI did a beam size/beam propagation measurement
of the low power CO2 laser (Access Laser
L3, SN:154507-154935)
 L3_CO2_laser_beam_size.mL3_CO2_Laser_154507-154935.pdf 
  208   Fri May 11 12:32:21 2018 AidanLaserHartmann sensorHWS green LED fiber launcher [Aidan, Marie]

We tested the output of the fiber
launcher D1800125-v3. We were using a 6mm
 LED_test_01_20180511.pdf 
  209   Fri May 11 16:18:47 2018 AidanLaserHartmann sensorHWS green LED fiber launcherAnd here's the output of the fiber
launcher when I fixed it at 313mm from the
camera, attached an iris to the front and
 LED_test_02_20180511.pdf 
  210   Wed May 16 16:47:29 2018 AidanLaserHartmann sensorHWS green LED fiber launcher - D1800125-v5_SN01Here is the output from D1800125-v5_SN01.




 HWS_LED_D1800125_V5_sn01.pdfHWS_LED_D1800125_V5_sn01.mHWS_D1800125-v5_sn01_characterize_20180516.tar 
  211   Fri May 18 16:32:37 2018 AidanLaserHartmann sensorHWS green LED fiber launcher - D1800125-v5_SN01Title was wrong - this is actually config
[12,2,4,125]

  
  214   Thu Jun 21 17:12:38 2018 AidanLaserHartmann sensorTwo inch PBS from Edmund Optics - effect on ETM HWS transmissionI'm considering the 86-711 2"
532nm PBS from Edmund Optics for the ETM
HWS at the sites.
 PBS_Thorlabs_v_EdmundOptics.pdf 
  215   Tue Jul 10 17:49:13 2018 Aria ChaderjianLaserGeneralJuly 10, 2018Went down to the lab and showed Rana the
setup. He's fine with me being down there
as long as I let someone know. He also recommended
 IMG_4518.jpgIMG_4517.jpg 
  216   Thu Jul 12 18:48:21 2018 Aria ChaderjianLaserGeneralJuly 12, 2018The beam reflecting off the test mirror
was clipping the lens between gold mirror
and test mirror, so I reconfigured some of
  
  217   Fri Jul 13 16:42:50 2018 Aria ChaderjianLaserGeneralJuly 13, 2018The table is set up. The HWS and SLED were
moved slightly, and a minimal angle between
the test mirror and HWS was achieved.
  
  218   Mon Jul 23 10:04:19 2018 Aria ChaderjianLaserGeneralJuly 20, 2018With Jon's help, I changed the setup
to include a mode-matching telescope built
from the f=60mm (1 inch diameter) lens and
 37767216_2077953269190954_5080703241788850176_n.jpg 
  219   Tue Jul 24 16:52:44 2018 Aria ChaderjianLaserGeneralJuly 23, 2018 and July 24, 2018Attached the grid array of the HWS.

Applied voltage (5V, 7V, 9.9V,
14V) to the heater pad and took measurements
  
  220   Fri Aug 3 15:46:12 2018 Aria ChaderjianLaserGeneralAugust 3, 2018To the best of my ability, calculated the
magnification of the plane of the test optic
relative to the HWS (2.3) and input this
  
  9   Thu Feb 4 19:45:56 2010 AidanMiscRing HeaterRing heater transfer function - increasing collection areaI mounted the thinner Aluminium Watlow
heater inside a 14" long, 1" inner
diameter cylinder. The inner surface was
 low-emissivity-tube.jpg 
  44   Wed May 26 14:58:04 2010 AidanMiscHartmann sensorHartmann sensor cooling fins added14:55 -  Mindy stopped by with the
copper heater spreaders and the cooling fins
for the Hartmann sensor. We've set them all
 HWS_CONFIG1.jpg 
  49   Tue Jun 15 16:30:10 2010 Peter VeitchMiscHartmann sensorSpot displacement maps - temperate sensitivity testsResults of initial measurement of temperature
sensitivity of Hartmann sensor
"Cold" images were taken
 spot_displacements_same_temp_0611.jpgspot_displacements_diff_temp_0611.jpg 
  50   Wed Jun 16 11:47:11 2010 AidanMiscHartmann sensorSpot displacement maps - temperate sensitivity tests - PRISMI think that the second plot is just showing
PRISM and converting it to its radial components.
This is due to the fact that the sign of
 Prism_as_radial_vector.pdf 
  51   Thu Jun 17 07:40:07 2010 James KMiscHartmann sensorSURF Log -- Day 1, Getting Started For Wednesday, June 16:   
  52   Thu Jun 17 22:03:51 2010 James KMiscHartmann sensorSURF Log -- Day 2, Getting StartedFor Thursday, June 17:
Today I attended a basic laser safety
training orientation, the second Introduction
  
  53   Sat Jun 19 17:31:46 2010 James KMiscHartmann sensorSURF Log -- Day 3, Initial Image Analysis   7x 
  54   Tue Jun 22 00:21:47 2010 James KMiscHartmann sensorSurf Log -- Day 4, Hartmann Spot Flickering Investigation I started out
the day by taking some images from the CCD
 7x 
  55   Tue Jun 22 22:30:24 2010 James KMiscHartmann sensorSURF Log -- Day 5, more Hartmann image preliminary analysis Today I spoke with Dr. Brooks and
got a rough outline of what my experiment
for the next few weeks will entail. I'll
 13x 
  56   Wed Jun 23 06:49:48 2010 AidanMiscHartmann sensorSURF Log -- Day 5, more Hartmann image preliminary analysisNice work!
 

  
  57   Wed Jun 23 22:57:22 2010 James KMiscHartmann sensorSURF Log -- Day 6, Centroiding So in addition to taking steps towards
starting to set stuff up for the experiment
in the lab, I spent a good deal of the day
 10x 
  58   Fri Jun 25 00:11:13 2010 James KMiscHartmann sensorSURF Log -- Day 7, SLED Beam Characterization 
 BeamData.xlsxbeam_pdfs.zipbeamdata.mgsbeam.m 
  59   Fri Jun 25 10:47:08 2010 AidanMiscaLIGO ModelingUploaded aLIGO axicon+ITM COMSOL model to the 40m SVNI added a COMSOL model of the aLIGO ITM
being heated by an axicon-formed annulus
to the 40m SVN. The model assumes a fixed
 aLIGO_axicon_spacing_post-magnification_optimization.jpg 
  60   Fri Jun 25 10:59:43 2010 AidanMiscaLIGO ModelingUploaded aLIGO axicon+ITM COMSOL model to the 40m SVNHere are the results in the annulus thickness
vs annulus diameter space ...

 Screen_shot_2010-06-25_at_11.01.38_AM.png 
  62   Thu Jul 1 09:40:13 2010 James KunertMiscHartmann sensorSURF Log 8 -- more SLED characterizationAs I started setting up my next experiment,
I noticed that the beam size from the SLED
appeared to be larger than expected from
 8x 
  64   Tue Jul 6 21:57:19 2010 James KunertMiscHartmann sensorSURF Log -- SLED fiber output temporal analysisIn the previous log, I describe the direct
measurement of the fiber output beam using
the Hartmann sensor with the plate removed.
 6x 
  65   Thu Jul 15 20:06:37 2010 James KMiscHartmann sensorSURF Log: Thermally Induced Defocus ExperimentsA quick write-up on recent work can be
found at: Google
Docs
 pydefoc.mpyanalyze.mpyimportsingle.mpyimportM.mframesumexport2.py 
  69   Thu Jul 22 21:46:55 2010 James KunertMiscHartmann sensorHartmann Sensor Thermal Defocus Measurement Noise & Ambient Light EffectsAs discussed during the teleconference,
a series of experiments have been conducted
which attempt to measure the thermally induced
 72210b_ambient.png 
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