| ID |
Date |
Author |
Type |
Category |
Subject |
Text |
 |
|
1
|
Fri Nov 6 20:09:47 2009 |
Aidan | Laser | Laser | Test | Does this work? |
|
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2
|
Thu Dec 10 22:23:47 2009 |
Not Aidan | Laser | Laser | Test | Yes.
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13
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Thu Feb 11 18:04:08 2010 |
Aidan | Laser | Ring Heater | Ring heater time constant | I've been looking to see what the time
constant of the ring heater is. The attached
plot shows the voltage measured by the photodiode |
|
|
42
|
Mon May 24 19:17:32 2010 |
Aidan | Laser | Hartmann sensor | Replaced Brass Plate with Invar Hartmann Plate | I just replaced the brass Hartmann plate
with the Invar one. The camera was off during
the process but has been turned on again. |
|
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43
|
Wed May 26 06:47:02 2010 |
Aidan | Laser | SLED | Switched off SLED - 6:40AM | |
|
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89
|
Mon Aug 9 10:58:37 2010 |
Aidan | Laser | SLED | SLED 15-day trend | Here's a plot of the 15-day output
of the SLED.
Currently there is an 980nm FC/APC |
|
|
94
|
Mon Sep 13 18:24:52 2010 |
Aidan | Laser | Hartmann sensor | Enclosure for the HWS | I've assembled the box Mindy ordered from
Newport that will house the Hartmann sensor.
It's mainly to reduce ambient light, air |
|
|
95
|
Tue Sep 28 10:41:32 2010 |
Aidan | Laser | Hartmann sensor | Aligning HWS cross-sample experiment - polarization issues | I'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 |
Aidan | Laser | Hartmann sensor | Crude alignment of cross-sampling measurement | I'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 |
|
|
97
|
Wed Sep 29 16:49:36 2010 |
Aidan | Laser | Hartmann sensor | Cross-sampling experiment power budget | I'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 |
|
|
98
|
Mon Oct 4 19:44:03 2010 |
Aidan | Laser | Hartmann sensor | Cross-sampling experiment - two beams on HWS | I've set up the HWS with the probe beam
sampling two optics in a Michelson configuration
(source = SLED, beamsplitter = PBS cube). |
|
|
99
|
Tue Oct 5 12:51:16 2010 |
Aidan | Laser | Hartmann sensor | Variable power in two beams of cross-sampling experiment | The SLED in the cross-sampling experiment
produces unpolarized light at 980nm. So I
added a PBS after the output and then a HWP |
|
|
107
|
Fri Feb 18 14:53:50 2011 |
Phil | Laser | Laser | LTG laser delivering specified power | I 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 Guido | Laser | Laser | LTG initial noise | Cheryl Vorvick, Chris Guido, Phil Willems
Attached is a PDF with some initial
noise testing. There are 5 spectrum plots |
|
|
128
|
Mon Mar 28 13:00:50 2011 |
Aidan | Laser | Hartmann sensor | To do: Check the polarization from the SLED | |
|
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129
|
Wed Mar 30 12:55:54 2011 |
Aidan | Laser | Hartmann sensor | Prism modulation experiment | I'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 |
Aidan | Laser | Hartmann sensor | Prism modulation experiment | I 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 |
Aidan | Laser | Hartmann sensor | Hartmann sensor prism/displacement test | I've set up an experiment to test the HWS
intensity distribution displacement measurement
code. Basically the beam from a SLED is just |
|
|
151
|
Mon May 30 10:53:00 2011 |
Aidan | Laser | Hartmann sensor | Defocus 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 |
|
|
152
|
Mon May 30 20:11:27 2011 |
Aidan | Laser | Hartmann sensor | Hartmann 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 |
Aidan | Laser | Ordering | Access 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 |
Aidan | Laser | Hartmann sensor | HWS 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 |
|
|
193
|
Mon Oct 23 19:02:42 2017 |
Jon Richardson | Laser | Hartmann sensor | Mitigated Heating Beam Losses | There 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 Richardson | Laser | Hartmann sensor | Write-Up of CO2 Projector Measurements | For archive purposes, attached is a write-up
of all the HWS measurements I've made
to date for the SRM CO2 projector mock-up. |
|
|
204
|
Thu Jan 18 10:09:50 2018 |
Jon Richardson | Laser | General | RIN Measurement of 400 mW CO2 Laser in Progress | The 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 Richardson | Laser | General | RIN Measurement of 400 mW CO2 Laser in Progress | Attached for reference is the RIN measurement
from the initial data.
|
|
|
207
|
Thu Feb 8 15:42:13 2018 |
Aidan | Laser | Laser | Low power CO2 laser [400mW] beam size measurement | I did a beam size/beam propagation measurement
of the low power CO2 laser (Access Laser
L3, SN:154507-154935) |
|
|
208
|
Fri May 11 12:32:21 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher | [Aidan, Marie]
We tested the output of the fiber
launcher D1800125-v3. We were using a 6mm |
|
|
209
|
Fri May 11 16:18:47 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher | And here's the output of the fiber
launcher when I fixed it at 313mm from the
camera, attached an iris to the front and |
|
|
210
|
Wed May 16 16:47:29 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher - D1800125-v5_SN01 | Here is the output from D1800125-v5_SN01.
|
|
|
211
|
Fri May 18 16:32:37 2018 |
Aidan | Laser | Hartmann sensor | HWS green LED fiber launcher - D1800125-v5_SN01 | Title was wrong - this is actually config
[12,2,4,125]
|
|
|
214
|
Thu Jun 21 17:12:38 2018 |
Aidan | Laser | Hartmann sensor | Two inch PBS from Edmund Optics - effect on ETM HWS transmission | I'm considering the 86-711 2"
532nm PBS from Edmund Optics for the ETM
HWS at the sites. |
|
|
215
|
Tue Jul 10 17:49:13 2018 |
Aria Chaderjian | Laser | General | July 10, 2018 | Went 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 |
|
|
216
|
Thu Jul 12 18:48:21 2018 |
Aria Chaderjian | Laser | General | July 12, 2018 | The 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 Chaderjian | Laser | General | July 13, 2018 | The 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 Chaderjian | Laser | General | July 20, 2018 | With Jon's help, I changed the setup
to include a mode-matching telescope built
from the f=60mm (1 inch diameter) lens and |
|
|
219
|
Tue Jul 24 16:52:44 2018 |
Aria Chaderjian | Laser | General | July 23, 2018 and July 24, 2018 | Attached 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 Chaderjian | Laser | General | August 3, 2018 | To 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 |
Aidan | Misc | Ring Heater | Ring heater transfer function - increasing collection area | I mounted the thinner Aluminium Watlow
heater inside a 14" long, 1" inner
diameter cylinder. The inner surface was |
|
|
44
|
Wed May 26 14:58:04 2010 |
Aidan | Misc | Hartmann sensor | Hartmann sensor cooling fins added | 14:55 - Mindy stopped by with the
copper heater spreaders and the cooling fins
for the Hartmann sensor. We've set them all |
|
|
49
|
Tue Jun 15 16:30:10 2010 |
Peter Veitch | Misc | Hartmann sensor | Spot displacement maps - temperate sensitivity tests | Results of initial measurement of temperature
sensitivity of Hartmann sensor
"Cold" images were taken |
|
|
50
|
Wed Jun 16 11:47:11 2010 |
Aidan | Misc | Hartmann sensor | Spot displacement maps - temperate sensitivity tests - PRISM | I 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 |
|
|
51
|
Thu Jun 17 07:40:07 2010 |
James K | Misc | Hartmann sensor | SURF Log -- Day 1, Getting Started | For Wednesday, June 16: |
|
|
52
|
Thu Jun 17 22:03:51 2010 |
James K | Misc | Hartmann sensor | SURF Log -- Day 2, Getting Started | For Thursday, June 17:
Today I attended a basic laser safety
training orientation, the second Introduction |
|
|
53
|
Sat Jun 19 17:31:46 2010 |
James K | Misc | Hartmann sensor | SURF Log -- Day 3, Initial Image Analysis | |
7x |
|
54
|
Tue Jun 22 00:21:47 2010 |
James K | Misc | Hartmann sensor | Surf 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 K | Misc | Hartmann sensor | SURF 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 |
Aidan | Misc | Hartmann sensor | SURF Log -- Day 5, more Hartmann image preliminary analysis | Nice work!
|
|
|
57
|
Wed Jun 23 22:57:22 2010 |
James K | Misc | Hartmann sensor | SURF 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 K | Misc | Hartmann sensor | SURF Log -- Day 7, SLED Beam Characterization |
|
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