| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
370
|
Mon Jul 1 12:49:42 2019 |
Koji | Optics | Characterization | Scattering measurement of A and C mirrors | Liyuan's scattering measurement for
the A and C mirrors. |
|
|
371
|
Thu Aug 22 12:35:53 2019 |
Stephen | Optics | Characterization | Wedging of the debonded PZTs 2019 August | Wedge and thickness measurements of PZTs
12 and 13 took place after debonding and
cleaning - results are shown in the first |
|
|
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 |
|
|
395
|
Thu Oct 8 19:55:22 2020 |
Koji | General | Characterization | Power Measurement of Mephisto 800NE 1166A | The output of Mephisto 800NE (former TNI
laser) was measured.
The output power was measured with |
|
|
402
|
Sat Nov 21 13:58:30 2020 |
Koji | Electronics | Characterization | Dark Current Measurement for InGaAs QPDs | Dark current measurement for InGaAs QPDs
(OSI FCI-InGaAs-Q3000) has been done using
Keithley 2450 and Frank's diode test |
|
|
403
|
Sun Nov 22 13:49:12 2020 |
Koji | Electronics | Characterization | Impedance Measurement for InGaAs QPDs | To know any anomaly to the junction
capacitance of the QPD segments, the RF impedances
were tested with a hand-made impedance measurement. |
|
|
404
|
Mon Nov 23 23:17:19 2020 |
Koji | Electronics | Characterization | The dark noise of the Q3000 QPDs | The dark noise levels of the four Q3000
QPDs were measured with FEMTO DLPCA200 low
noise transimpedance amp. |
|
|
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 |
|
|
406
|
Tue Nov 24 12:27:18 2020 |
Koji | Electronics | Characterization | The dark noise of the Q3000 QPDs | The amplifier BW was 400kHz at the gain
of 1e7 V/A. And the max BW is 500kHz even
at a lower gain. I have to setup something |
|
|
454
|
Mon Nov 14 08:34:45 2022 |
Camille | Optics | Characterization | transmission measurements through OMC #1 (before cleaning) | [Camille, Koji]
Friday, Nov 11th, 2022
Setting up OMC #1 for transmission |
|
|
455
|
Mon Nov 14 09:27:13 2022 |
Koji | Optics | Characterization | transmission measurements through OMC #1 (before cleaning) | The measured total optical loss of the
OMC was
1st: 0.015 +/- 0.003 |
|
|
460
|
Thu Nov 17 19:50:00 2022 |
Koji | Optics | Characterization | Conclusion on the cleaning of OMC #001 | Conclusion on the cleaning of OMC
#001
- After a couple of first contact |
|
|
464
|
Fri Dec 2 11:42:03 2022 |
Koji | Optics | Characterization | OMC #1 cleaning for water soluble contaminants | [Camille, Koji] Log of the work
on Nov 30, 2022
The
following is the notes from GariLynn
|
|
|
465
|
Fri Dec 2 12:38:15 2022 |
Koji | Optics | Characterization | OMC #1 cleaning for water soluble contaminants | Another set of FC cleaning was applied
to FM1/FM2/CM1/CM2 and SM2. Some FC strings
are visible on SM2. So I decided to clean |
|
|
466
|
Fri Dec 2 23:58:33 2022 |
Koji | Optics | Characterization | OMC #1 cleaning for water soluble contaminants | The second trial of the water scrub
A bright scatter is visible on
FM1, so I tried water scrub on FM1. This |
|
|
468
|
Fri Dec 9 13:13:13 2022 |
Koji | Optics | Characterization | FSR/TMS/Spot Positions/Transmission | [Camille Koji]
We quickly measured the basic parameters
of the OMC as is. |
|
|
469
|
Mon Dec 12 19:04:40 2022 |
Koji | Optics | Characterization | FSR/TMS/Spot Positions/Transmission 2nd trial | [Camille Koji]
We replaced CM2 with a PZT mirror
subassembly serialized by PZT "13" |
|
|
470
|
Mon Dec 19 18:51:50 2022 |
Koji | Optics | Characterization | TMS measurement with the PZT voltages altered | [Camille, Koji] Log of
the work on Dec 15, 2023
The vertical and horizontal |
|
|
489
|
Wed Feb 8 16:10:52 2023 |
Stephen | Optics | Characterization | A+ OMC, Parallelism of HR Prisms | [Camille, Thejas, Stephen]
We set up the white light autocollimator
in the Downs B119 cleanroom. (Nippon Kogaku, |
7x |
|
490
|
Thu Feb 9 15:54:41 2023 |
Thejas | Optics | Characterization | A+ OMC, Parallelism of HR Prisms | [Camille, Thejas, Stephen]
Continuing yesterday's efforts
to measure the wedge angle of the back surface |
19x |
|
491
|
Tue Feb 14 10:45:00 2023 |
Thejas | Optics | Characterization | A+ OMC Prism perpendicularity | [Camille, Stephen, Thejas]
Following the wedge angle measurements
of the prisms, perpendicularoty of their |
27x |
|
492
|
Tue Feb 14 22:52:35 2023 |
Thejas | Optics | Characterization | A+ OMC Prism perpendicularity of HR Prisms and BS | [Camille, Stephen, Thejas]
Continuing with the efforts to
measure the perpndicularity. |
18x |
|
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 |
|
|
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 |
|
|
505
|
Fri Mar 10 10:23:08 2023 |
Thejas | Optics | Characterization | A+ OMC curved mirror radius of curvature | OMC test set-up
Yesterday, laser beam output from
the fibre follwoing teh mode-matching lenses |
|
|
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 |
|
|
508
|
Tue Mar 14 12:12:41 2023 |
Koji | Optics | Characterization | A+ OMC curved mirror characterization | RoC: 2.65m ! Interesting. I'll wait
for the follow-up analysis/measurements.
The RoC may be dependent on the area (diameter) |
|
|
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 |
|
|
510
|
Tue Mar 14 20:06:03 2023 |
Koji | Optics | Characterization | A+ OMC Curved mirror radius of curvature | If the mirror has the RoC, it works as
a lens. And you should be able to see the
effect in the beam profile. |
|
|
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 |
|
|
512
|
Wed Mar 15 17:07:35 2023 |
Koji | Optics | Characterization | A+ OMC Curved mirror radius of curvature | I hope you can find useful lenses from
the lens kit in the cabinet. If you need
more lenses and mounts, talk to our students |
|
|
513
|
Fri Mar 17 15:01:21 2023 |
Koji | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Thanks Koji, the lenses available in the
cabinet in the lab actually sufficed.
|
|
|
514
|
Fri Mar 24 07:38:54 2023 |
Camille Makarem | Optics | Characterization | ROC measurements of the curved mirrors | [Thejas, Camille]
21 March 2023
We made slight adjustments to the |
|
|
515
|
Fri Mar 24 07:47:37 2023 |
Camille Makarem | Optics | Characterization | ROC measurements of the curved mirrors | [Camille]
22 March 2023
Beam profile measurements were continued |
|
|
516
|
Tue Mar 28 11:21:27 2023 |
Camille Makarem | Optics | Characterization | Sagitta measurements of curved mirrors | [Camille, Stephen, Thejas]
Curved mirror sn02 was used to test |
|
|
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 |
|
|
520
|
Tue Apr 11 16:18:25 2023 |
Thejas | Optics | Characterization | A+ OMC Curved mirror radius of curvature | Curved mirror radius of curvature raw data
can be found in the DCC document: T2300050
The input beam falling on the curved |
|
|
521
|
Thu Apr 13 07:47:28 2023 |
Camille Makarem | Optics | Characterization | Zygo setup for curved mirror measurements | [Camille, Thejas, Stephen]
We modified the Zygo setup for
measuring the sagitta of the curved mirrors. |
|
|
522
|
Fri Apr 14 15:52:53 2023 |
Camille Makarem | Optics | Characterization | Determining the curvature bottom of the curved mirrors | [Camille, Thejas]
We repeated Zygo measurements (using
the same setup and method as below) for curved |
|
|
523
|
Fri Apr 14 16:36:29 2023 |
Thejas | Optics | Characterization | Determining the curvature bottom of the curved mirrors | Attached here with are relevant plots.
|
21x |
|
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 |