Holzworth 00,329,125,000,000 → 00,329,130,000,000

I searched the server for the the original GandH aom mount from protolabs, but was unsuccessful.

I searched for the keywords [aom, protolab, mount, invoice, gandh, and gooch] in the servers [common, stronium, users, and strontiumwg]

Holzworth 00,329,120,000,000 → 00,329,125,000,000

Holzworth 00,329,095,000,000 → 00,329,120,000,000

There has been 5 days since the Holzworth has been adjusted, so I increased it by 25kHz due to the +5kHz/day.

I worked on the mount's inventor file for the GandH AOMs. I plan to finish it tomorrow.

Holzworth 00,329,095,000,000 → 00,329,095,000,000

I had to get the ODT to work, but was not seeing it. After testing different ideas with Grady, we determined that an AOM was not operating correct. I later confirmed this with Tyler. He explain he has been dealing with this issue.

I optimized the wiring from the Ixon camera to the computer with what the lab had on hand.

Currently, i trying to find the best way to focus light on to the target, that is repeatable.

I tried to focus a flash light through the test target's Star Sector, but i believe it was limited due to a 11.25 magnification and or 3 different objects having a tip tilt error (focus lens, window and test target. I was able to get a 16X Magnification but it wasn't entirely focused. It's the image below.

I locked lasers and got a image of atoms

Motor Mount:

The motor mount is working, and with a lower thickness. We switched the lens to a 45mm lens. Tyler and I tried a 38mm lens but the it was too thick and would hit the objective mount.

Fine Focus the Imaging:

We aligned the imaging path of the tweezer board and the image is roughly in focus. Goal for tomorrow is to get a fine image

Trapping Atoms:

I locked all the lasers, and adjusted the Holzworth

Holzworth 328884000 → 328889000

5kHz shift

making the ODT vertical:

in the Virtual Machine (Qcontrol → ADWin0 → Experiment Terminal)

Check if the Main.pys file is open

python script /home/lab/sequences/Main.pys →

in the main.pys file:

“dialy red mot calibration settings”

change self.VerticalImagingOn = 1 → save file → Control→ click Timing (top left) → Update

Move the card from the from Virtual imaging to Horizontal, then Attach the magnetic flipper mirror.

in Qcontrol, on right side, in Channel Setter. click Camera Trigger 6 times. you should see a change in Matlab script on imaging computer

turn on ODT, press run on VM

We now want to center of the atom cloud:

go to the Main .pys script in VM, then go to Self.BX(Z) section. : comments in this line of code will guide you. save file → Control→ click Timing (top left) → Update

switching back to horizontal imaging:

in the main file:

change self.VerticalImagingOn = 0 → save file → Control→ click Timing (top left) → Update

Move the card from the from horizontal imaging to vertical, then Un-Attach the magnetic flipper mirror.

in Qcontrol, on right side, in Channel Setter. click Camera Trigger 6 times. you should see a change in Matlab script on imaging computer

press run on VM

Turn off ODT

Holzworth 328881000 → 328884000

3kHz increase

trouble shooting imaging :

using matlab, the file is on a local loaction which is odd. matlab crashes

we need to connect to the server.

We check the Strontium is not connect to the server.( noted by the red X).

Now we run matlab. File still on a local file. Works.

The imaging software file is C:\Users\paul\Desktop\Images\AbsorptionImaging.m

We need to connect this file to the server (not be local)

IF the imaging computer restarts again, check if there is a connection to the server. then run Matlab R2018a

look for the file, launch, then run the Virtual Machine.

in imaging computer: find file C:Users\paul\Desktop\Holzworth\HolzworthHSXX01

IP 172.16.74.173 Holzworth 328879000 → 328881000

open file strontium\software\imaging\common\control_config

I lock the 689nm and 481nm lasers. Tyler helped with the 461nm laser, I wrote a personal instructions to lock the lasers. They aren't professional in any way, but I'll post them here.

locking_lazers.pdf

Tyler showed my how to lock, load and run the Red MOT, Blue MOT, and repumper.

Lab Meeting

The Actuator mounts came in, and seem to be working perfectly.

Lab Meeting

Goal:

1. Connect the 75mm lens mount electronics together.

Goal we achieved.

Lab Clean Up

Grady showed myself, Tyler, and Will how to update the power of 2 lasers.

Lab Meeting

Finalized and sent in the Actuator mounts to Protolabs.

I put the objective mirror back on the tweezer board. Then made the 497 and Blue MOT lasers colinear with the Red MOT. The Red MOT is our reference beam.

Tyler asked me to help with some wiring issues with the 75mm lens. I plan to help with that the following week.

First day of classes. Not in the lab.

Goals:

1. Finalized the actuator mount CAD, with approval.

2. Place the objective, stage, and mirror back on the tweezer board.

Goals:

1. Finish the CAD for the actuator mount.

After making the Mount CAD, My only concern is the joint of the push mount. If the metal is too thin, then we will have some error in movement with the actuator. I need to discuss this with Julio.

The goal was achieved.

The red item is the Actuator. The black items are the mount, The silver item is the objective stage.

Goals:

1. Find a way to fix the Objective stage mount.

2. Make a CAD of the actuator mounts.

3. Don't Break Anything.

In each linear direction, there exists a locking mechanism for the purpose of locking the movement. In this case, each one is disguised as the label for the whole stage. This mechanism pins down a metal plate up against one of the 3 moveable parts of the stage. A custom spacer is placed in between this plate and the stage itself because, without it, the stage will always be in the locked position. This locked position gave the appearance of a broken stage mount. The stage currently has 0 known mechanical issues.

After discussing with Julio, we determined that the actuator can be elevated to clear the path of the tilt actuator. I made the CAD for the holder of this actuator.

All goals were met.

Goals:

1. Draw up possible actuator mounts.

2. Don't Break Anything.

A schematic of the actuator has been made. It has yet to be made into a CAD file.

Both goals were met.

Goals:

1. Find possible configurations to place the new actuator on the objective stage.

2. Roughly align the Blue MOT.

3. DON'T BREAK ANYTHING OR LOSE ANY SMALL SCREWS.

I finished my lab clean-up by organizing and putting away the Beam Height shipment. And putting away any tool that isn't immediately necessary to the tweezer table.

I roughly aligned the blue mot, but I noticed potential alignment issues with the 497 beam path.

A custom actuator mount will most likely be needed. Im trying to think of most efficient placement for one.

Goals 2 and 3 were met.

Julio, Tyler, and I discussed the possible repositioning of the actuators for the objective mount. Since the new piezo actuators are too large to stick on the end.

Goals:

1. Find possible configurations to place the new actuator on the objective stage.

2. DON'T BREAK ANYTHING.

Our current actuator holders won't fit when repositioned. So, I will need to look online, and design one to make.

Goals:

1. Align the Red MOT through the objective.

2. Roughly align the Blue MOT

I learned more techniques regarding laser alignment through an objective. It is not as trivial as I thought. I only roughly align the Red MOT through the objective. Tyler believes, that having a 2 iris setup, just before the objective could make the alignment easier.

Both Goals were not met.

Goals:

1. Switch the position of the Camera and the Red MOT.

2. Set the Red mount beam height back to 3“.

3. Find the new screw-hole position for the 75mm lens just before the objective.

Tyler and I realized, the Lens mount did not need any reconstructing, but rather repositioning.

All Goals were met.

Goals:

1. Align Red MOT through the objective.

2. Align Blue Mot through the objective.

3. Set up 75mm lens mount, just before the objective.

The 2-lens telescope for the MOT are 25mm then 150mm for the RED MOT, and 25mm then 175mm for the BLUE MOT

Only Goal 1 was achieved.

I was not in lab.

Goals:

1. Reallagin the mirrors to fit the new configuration, and re-adjust the height.

2. Don't break anything.

The mirrors were rearranged to the current configuration, and their beam heights were optimized.

Both Goals were met.

Summer Program Presentations

I worked on aligning the blue MOT to gain a magnified image to show for my presentation. Tyler and I aligned the Laser but ran out of time to produce an image.

Goals:

1. Set the Blue MOT mirrors to the correct height regarding the flip mirror. 2. Roughly align the dark red tweezer board. 3. Don't break anything.

Goals:

1. Set optical equipment to 3”. 2. Place in 75mm lens for the telescope. 3. Approximately align the mirrors. 4. Don't break anything.

Most of the optical equipment was set to 3“. The 2 telescope system was placed in a cage system. Tyler showed me the proper step to fiber couple a laser, through using the power meter and adjusting the columnator. We went over the columnation of the blue mot.

We realized that the MOTs and some mirrors will need to be raised higher because the flip mirrors only work when they are in the vertical position (95.6mm).

Goals 2,3, and 4 were met. Goal 1 was partially met

I was not in lab.

Goals:

1. Start slides for the summer research presentation.

All Goals were met.

Was not in lab

Goals:

1. Start setting the beam height of the optical components to 3” 2. Don't break anything.

All optical equipment is set/waiting for preparation to be at 3“ beam height.

All Goals were met.

Not in lab.

Goals: 1. Reset Beam Height to 3” (76.2 mm) 2. Don't break anything.

I created a spreadsheet that has Specs of all the needed parts for the Tweezer board and required posts, spacers, etc to have them be 3“ high.

All Goals were achieved.

Goals: 1. Find all materials needed to set the beam height to 90mm. 2. Set optical equipment to 90mm. 3. Don't break anything.

I documented all the materials needed to achieve a beam height of 90mm for the tweezer board. A google sheet was created to organize the products needed from Thorlabs, plus numerical values to correspond with the specific equipment.

Goals 1 and 3 were achieved.

Goals: 1. Dont break anything. 2. Successfully use the iXON camera, and gain an image.

Here are Tutorial videos for the iXON Ultra.

The iXON has 13um pixel widths.

Here is the Hardware Guide.

Here is the Spec Sheet of the iXON Ultra.

This is a 40x image of the Test Target, taken by the iXON Camera.

T0 see an Image in the software:

go to Acquistion setup:: Readout Mode:Image ; disEnable EM Gain ; 30MHZ ; shift speed 4.33

Take a signal, then click on the Display setting →Change Display Mode → Image

go

The thickness of each line can be explained by this link.

Was not in lab.

Goals: 1. Learn about the iXON 888 camera and potentially test it with the telescope. 2. Don't break anything.

I found a completed Operation Manual for the iXON here

I received and installed the andor solis/sdk for windows.

Goals: 1. Updated Wiki from the previous week. 2. Align objective lens and tube lens to magnify test target 40x. 3. Don't break anything.

I had to use my phone light to for a higher intensity. Due to the focal length of 0.6mm of the objective I need to use one of the center targets, such as the 100um or 50um grid.

The 100um grid has 5um thick lines. Since the camera has a pixel width of 1.67um. The necessary pixel displacement should be about 120 pixels.

Through the help of Grady, he notices the Test Target was backward. Meaning the Writing was on the opposite side of the glass, which is more than 0.6 mm thick. The object would have never been able to focus on it because of that distance. Once I flipped the test target, the camera showed a much more clear image. I used the USAF 1951 Target. The thickness of each line can be explained by this link. I have achieved a magnification of 37x to 41x. Once the best distance between the objective and the tube lens, I will lock the cage system.

The Objective we are using is Infinity corrected, so the distance between it and the tube lens should not matter. After adjusting the distance between the tube lens and objective lens, I found the magnification was optimized when the Pupil Distance was about 3.3cm, and the tube lens working distance was 13cm. This configuration gave me a magnification of 39.66x.

Goals 2 and 3 were completed.

Ray Optics Sim

Tyler wanted me to review our need for a two telescope set up to magnify the atoms 195x. I started by placing two plano-convex lenses inline with a columnated beam to magnify them. I learn that the face of each lens matters in the direction of the beam path. If the angle between the surface of the lens and the beam is not symmetric, then aberrations can form. So for a telescope, the beam will enter the convex side of the 1st lens and exit the convex side of the 2nd lens.

I learned to find the Rayleigh Range of a columnated beam and how it connects to the tweezer exp.

I reviewed different Actuators for the Tweezers. I learned that we need close loop feedback and bi-directional repeatability. I created the Table with eight possible actuators. Robin discussed with me the four lasers involved with the Tweezer Exp. 461nm for the Blue MOT, 489nm for the Red MOT, 498nm for the Dipole Trapper, and a 4th laser specific to Strontium.

I reviewed the trapping and cooling techniques within Stellmer, Foot, and Phillips. The order in which our atoms are cooled and trapped is by the Zeeman slower, Blue MOT,(Repumper), Red MOT, then Dipole Trap.

I shadowed Owen and Will for the day. I learned more about aligning optics and placing each lens in the proper mounts. I learned that the combination of a Half-Wave Plate and a Quarter-Wave plate could reach any polarization of light.