| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
494
|
Wed Feb 15 17:40:21 2023 |
Thejas | Optics | Characterization | A+ OMC perpendicularity of hole prisms | [Camille, Stephen, Thejas]
Contnuing the efforts to measure
and check perpendicularity: tombstone prisms |
20x |
|
495
|
Fri Feb 17 17:11:28 2023 |
Thejas | Optics | Characterization | A+ OMC beam-splitter prisms wedge angle measurement | [Camille, Stephen, Thejas]
Yesterday we measured wedge angle |
11x |
|
496
|
Fri Feb 17 17:25:39 2023 |
Thejas | Optics | Characterization | A+ OMC Breadboard measuerements | Yesterday we also measured weight and dimensions
of breadboard. Error for the following measurements
is same as the least count of the instruments |
|
|
497
|
Fri Feb 17 17:41:57 2023 |
Thejas | Electronics | Characterization | A+ OMC Piezos wedge angle | [Camille, Stephen, Thejas]
PZT model: Noliac 2124
Qty: 18 (Sr. No. 30 - 48) |
|
|
498
|
Mon Feb 27 17:40:27 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror characterization | [Camille, Stephen, Thejas]
Today, before the ZYGO lab was
cleaned and prepared for the cureved mirrors' |
|
|
499
|
Wed Mar 1 10:23:10 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror characterization | [Camille, Thejas, Stephen]
Yesterday, efforts were made to
measure ROC of curved mirrors (#6) in the |
|
|
501
|
Mon Mar 6 16:02:56 2023 |
Thejas | Optics | General | OMC test setup locking | On Feb 16, Camille and I attampted at locking
the OMC cavity. It was quick to re-align
the beam to the cavity (by using only the |
|
|
502
|
Tue Mar 7 10:20:55 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | [Camille, Stephen, Thejas]
Stephen returned the curved mirror
#6 to Liyuan for point transmission measurement. |
|
|
503
|
Tue Mar 7 23:00:16 2023 |
Thejas | Optics | Characterization | OMC Lab clean up | Today, Koji and I cleaned up the the lab
space and made some space on the
optical table for radius of curvature measurement |
|
|
504
|
Wed Mar 8 17:27:51 2023 |
Thejas | Optics | Characterization | A+ OMC Curvature minimum of curved optics | [Stephen, Thejas]
Today, a more rigorous effort was
made to re-measure the position of the optics |
|
|
506
|
Fri Mar 10 11:12:57 2023 |
Thejas | Optics | Characterization | A+ OMC Curvature minimum of curved optics | [GariLynn, Stephen, Thejas]
Yesterday, we placed an iris (borrowed
from OMC Lab) infront of the spherical transmission |
|
|
507
|
Tue Mar 14 10:41:06 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror characterization | [Camille, GarriLynn, Stephen, Thejas]
Folllowing the replacement of the
spherical transmission / reference mirror |
|
|
509
|
Tue Mar 14 18:24:03 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Today, I tried to measure the radius of
curvature of the curved mirror using the
input beam for the OMC test set-up. It was |
|
|
517
|
Mon Apr 3 11:06:47 2023 |
Thejas | Optics | Characterization | Flat mirror flatness | Data can be found in DCC document T2300050.
On Friday. Camille and I measured |
|
|
524
|
Mon Apr 17 17:56:25 2023 |
Thejas | Optics | Characterization | A+ OMC Piezos wedge angle | PZT dimension analyzed and characterized.
The blue dot in the images represents the
position of the cathode. The length of the |
19x |
|
530
|
Fri Apr 28 13:25:40 2023 |
Thejas | Optics | General | aLIGO OMC Unit-4 | [Camille, Koji, Thejas]
Yesterday, we cleaned the cavity
optics with first contact, aligned the input |
|
|
531
|
Fri Apr 28 14:24:03 2023 |
Thejas | Optics | Characterization | A+ OMC Matching | [Thejas, Camille, Stephen]
Here are some notes on how
I plan to approach matching of |
|
|
537
|
Thu May 11 10:46:17 2023 |
Thejas | General | Characterization | aLIGO OMC | [Thejas, Camille, Koji]
We aligned the laser beam to the
cavity and drove the OMC cavity PZTs (0 to |
|
|
539
|
Mon May 15 14:20:03 2023 |
Thejas | Optics | Characterization | A+ OMC ROC | Herewith attached are the results
of curved mirror radius of curvature characterization.
|
21x |
|
540
|
Mon May 15 14:24:41 2023 |
Thejas | Optics | Characterization | A+ OMC ROC | Koji's mirror measurement result attached
herewith for comparison.
|
|
|
544
|
Tue May 23 16:30:09 2023 |
Thejas | Electronics | Characterization | A+ OMC Piezos LA coupling | Oplev setup was built: arm length about
2 m
As the PZT 44 was actuated with |
|
|
511
|
Wed Mar 15 15:28:24 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Thanks for teh comment Koji. Yes, I did
see this effect by comparing the beam sizes
with and without the curved mirror. But the |
|
|
4
|
Wed Jun 20 20:37:45 2012 |
Zach | Optics | Configuration | Topology / parameter selection | EDIT (ZK): All the plots here were generated |
8x |
|
5
|
Thu Jun 21 03:07:27 2012 |
Zach | Optics | Configuration | Parameter selection / mode definition | EDIT 2 (ZK): As with the |
|
|
6
|
Fri Jun 29 11:26:04 2012 |
Zach | Optics | Characterization | RoC measurement setup | Here is the proposed RoC measurement
setup. Koji tells me that this is referred
to as "Anderson's method". |
|
|
9
|
Sun Jul 22 15:56:53 2012 |
Zach | Optics | Characterization | RoC measurement setup | Here is a more detailed version of
the setup, so that we can gather the parts
we will need. |
|
|
67
|
Tue Mar 5 19:37:00 2013 |
Zach | Optics | Characterization | eLIGO OMC visibility vs. power measurement details | EDIT (ZK): Koji points out that (1 -
Ti) should really be the non-resonant reflectivity
of the aligned cavity, which is much closer |
|
|
68
|
Wed Mar 6 23:24:58 2013 |
Zach | Optics | Characterization | eLIGO OMC visibility vs. power measurement details | I found that, in fact, I had lowered
the modulation depth since when I measured
it to be 0.45 rads --> Psb = 0.1. |
|
|
74
|
Wed Mar 20 09:38:02 2013 |
Zach | Optics | Characterization | [LLO] OMC test bench modified | For various reasons, I had to switch
NPROs (from the LightWave 126 to the Innolight
Prometheus). |
|
|
86
|
Thu Mar 28 03:37:07 2013 |
Zach | Optics | Configuration | Test setup input optics progress | [Lisa, Zach]
Last night (Tuesday), I finished
setting up and aligning most of the input |
|
|
87
|
Fri Mar 29 08:55:00 2013 |
Zach | Optics | Configuration | Beam launched into fiber |
|
|
|
94
|
Thu Apr 4 00:35:42 2013 |
Zach | Optics | Configuration | MMT installed on breadboard, periscope built | [Koji, Zach]
|
|
|
99
|
Fri Apr 5 18:18:36 2013 |
Zach | Optics | Configuration | AOM probably broken |
|
|
|
107
|
Wed Apr 10 00:40:30 2013 |
Zach | Optics | Configuration | fauxMC locked | [Koji, Zach]
|
|
|
137
|
Wed Jun 5 01:06:35 2013 |
Zach | General | Characterization | L1 OMC as-built diagram | D1300507
|
|
|
143
|
Thu Jun 13 12:12:20 2013 |
Zach | General | General | [LLO] OMC and OMCS in LVEA | https://alog.ligo-la.caltech.edu/aLOG/index.php?callRep=7395
|
|
|
293
|
Thu May 3 21:45:58 2018 |
awade | General | Loan / Lending | Borrowed toaster oven | I’ve borrowed the black and decker
toaster oven to dry some sonicated parts.
It is temporarly located in the QIL lab. |
|
|
405
|
Tue Nov 24 10:45:07 2020 |
gautam | Electronics | Characterization | The dark noise of the Q3000 QPDs | I see that these measurements are done
out to 100 kHz - I guess there is no reason
to suspect anything at 55 MHz which is where |
|
|
27
|
Tue Oct 16 14:50:54 2012 |
jamie, jeff | General | General | OMC breadboard/plate measurement dimensions | We have measured the dimensions and mass
of the OMC glass plates/breadboards:
|
|
|
286
|
Sat Jul 29 18:44:38 2017 |
rana | Electronics | Characterization | PDH amp | attachment 6: DCPD preamp looks like the
opamp is wired for positive feedback? |
|
|
393
|
Mon Sep 28 16:03:13 2020 |
rana | General | General | OMC Beam Dump Production Cure Bake |
are there any measurements of the BRDF
of these things? I'm curious how much
light is backscattered into the incoming |
|
|
372
|
Fri Aug 23 11:11:44 2019 |
shruti | Optics | Characterization | Finding the curvature bottom | I attempted to fit the data taken
by Koji of the beam spot precession at the
CCD in order to find the location of the |
|
|
373
|
Thu Aug 29 11:51:49 2019 |
shruti | Optics | Characterization | Wedging of the debonded PZTs - Calculation | Using the measurements of PZTs 12,13 taken
by Stephen, I estimated the wedging angle
and orientation following Section 2.3.1 of |
|
|
374
|
Thu Sep 5 15:40:42 2019 |
shruti | Optics | Configuration | PZT Sub-Assembly | Aim: To find the combinations
of mounting prism+PZT+curved mirror to build
two PZT sub-assemblies that best minimises |
|