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Проблема только в том, чтобы сделать фазовращатели, которые можно программировать на смещение фазы на заданную произвольную величину.. Я Мечтаю о таких чипах уже более 10 лет. Но я не инженер и не физик, я не знаю как они должны быть устроены, но точно знаю что они будут в сотни и тысячи раз быстрее кремниевых логических схем.

Thanks for this cool video and simulation program. Have you benchmarked the WaveSimulator2D against any other physical simulator? Can it be used for scientific (physically accurate) simulations with any degree of confidence? Many thanks.

Very cool - so simple - what would you say is the best large, macro effect quantum experiments that can be done? like mirror-like fingerprints on the inside of a full glass of water, or the best split beam experiment that delivers large, easy to see and understand results, things like detectors as well - the BS "quantum eraser" would be good to demystify this for at least 1 generation

How did you make sure you were always applying the correct pressure with the ruby on the material you were grooving? Did you aim for a specific depth for the grooves?

Impressive work! Appart from cost/manufacturability, is there an advantage of using an air bearings stage instead of a magnetic levitation stage?

Had so much success with this and am currently a 10th grade high school student!!! Thank you so much for tutorial - it's doing so much for building my portfolio and skills!

@10:33 I think you've got CCR2 and CCR3 switched in the diagram. Either that or I'm confused.

Great project for research and education, but I am very sceptical on the real practical use. Linear scale encoders are cheap nowadays. 3um/m accuracy and 100nm resolition incremental scales with quadrature output are less than 100USD. We have tested them at work and @0.2m lengh accuracy is <1.5um, some leas than 1um. 10nm resulution absolute scales with serial output 200-300USD. They are basically stick and forget, immune to dust, change of atmosferic condition, e.t.c. Single frequency interferometers with retroreflectors are very sensitive to lateral shifts and light intensity changes. To get the same micron level accuracy you have to calibrate and check it against atleast 1e-6 reference length standart under the same conditions. And that is only valid if your cheap LD is truly stablized, no mode jumps, single longitudinal mode, no contamination on the optics, e.t.c.

Great video! I'm delighted you used my image from wikipedia which is licensed for free use but if you had clicked on the image you would have gotten a much higher resolution image to use in your video. I love the combination of diagrams (and in 3D!), video of actual parts, and easy to understand narration.

thats some good quality content. thanks!

Awesome work, this has given me some ideas. Could you tell me specifics on the pump you are using (air consumption). The OAV ones are seriously costly, any need for inline filtering?

Impressive

Fantastic looking project thankyou for sharing!, if this project hits the design goals it might make an excellent option for homemade spindle error analysis for air/hydrostatic spindles/linear stages etc. Apologies is i.messed it but whats the expected cost roughly ?

I found a company selling a interferometer with a claimed accuracy of 5 PICOMETERS. That is about a tenth of the diameter of the smallest atom.

this is amazing. Tuning wire length sounds troublesome but feels like more robust

marvelous! I was about to do the exact same thing and then I find your video. I have experience in manufacturing temperature controllers with sub mK stability and heterodyne Mach-Zehnder interferometers. My original plan was to use one interferometer to stabilize the laser frequency, and then use and second heterodyne interferometry to measure the distance, so lambda /100 accuracy can be easily achieved. I considered helium-neon laser and diode laser, and I found that stabilizing the diode laser in a certain mode was quite A challenge, but if you pull it off, it could be as good as A stablized helium-neon laser

I was going to try this until I saw that it’s necessary to get hands up to 5x normal speed. I don’t think I can work that quickly :(

They rings seen when illuminating the glas sheet with a divergent source are not diffraction rings, but fringes of equal inclination otherwise known as Haidinger fringes.

Great idea with the plaster! I have tried pouring entire pads (like the ones usually made from graphite) and plaster also works there. This makes it very it easy to mold custom shapes!

🌊🌊🌊🌊🌊

Very well, now rotate that vertically and prove Einstein is wrong, please.

Would be curious to know the actual tuning range of current which you are using in this particular video. With my Osram 520nm device, I get good fringe contrast over a very limited range, maybe 36 mA +/- less than 1 mA but I think it is somewhat temperature-dependent. Have not yet tried the built-in monitor photodiode to stabilize optical output, which might be more reliable than simply stabilizing drive current.

I got an interference pattern similar to the one you called "good" using a 2x2x 1/4 inch piece of glass I got, sold as "GLP2X2-S Glass Streak Plate" from United Scientific. It was readily available. Maybe I just got lucky, I think this product does not guarantee precisely parallel surfaces.

Twice now, what I thought were useful comments went away. Are technical details not allowed?

You might consider to start with a higher grit (about 200 should be good) and then work your way down over 400, 600, 1200 to 2000 grit. That way, you will have no breakouts anymore at the edges of the grind.

Ah this is such a fabulous real-life demonstration of laser diode polarization. Great video, thank you for diving into the interesting fabrication details!!

classy

Have you thought about using a syringe to inject the plaster into the hole from the bottom up? That might reduce the chance of forming air bubbles.

I work in glass manufacturing and in quality department of the car windows so will be cool to show the quality of our imported glass. It is float glass, sometimes it feels really smooth and razor blade will glide on it sometimes really rough.

I do optics in my lab but I have no idea of what I'm looking at 😆

What grit of diamond whetstone do you recommend?

These things are nice, using an LED conversion matrix to convert different programs, into beams of color-coordinated light. These beams, can be refracted, using a secondary array, again translating various programs into angles of lenses. Which project into a globe, filled with nebulized liquids, or gasses, etc... To be used to display a 3D hologram, within a globe. This globe, could have a touch screen applied to the outer layer. This globe could contain light, refracted through water droplets, and mirrors, and lenses, Or ionized gasses Based on data conversion through a GPU....

I'm exited for this project! Great job so far!

I'm loving where this is going. Was that 800 grit whetstone by chance? I have a 2000 diamond lap but think that'll be a bit of a grind to get to dimension... I'll get me coat

That Fizeau interferometer idea is just genius!

i have been trying soldermask as a resist, it has very high viscosity but it works. I manage to get 25um resolution

you know this guy is legit because his glass didn't explode and fill his hand with glass fragments when he used the glass cutter

This is so cool device! I would never do something like this, but that is such satisfaction to just watch somebody did

Awesome so far, i have recently been getting interested in starting my own optics project, nothing nearly as involved as this, but just have no clue on where to source some of the parts...

Really loving this series. Thanks for sharing.

Thanx for sharing, I really like this video series!

This is a cool series. Can't wait for the rest. You might be interested in how easy it is to make an intentionally polarizing beamsplitter by coupling two glass prisms with a capiliary layer of melted sodium nitrate between them all sitting on a cleaved mica sheet to orient the crystal growth direction.

I Love this Project, can't wait to see more ❤ Greate job mate 👍

Sick! Would it b possible to extend this to 2D? So you can a surface and get a heightmap of sorts?

Great stuff! Can't wait for more. For me, information density is just spot on

INCREDIBLE

Why is something like this not widely found. Drives me crazy that compressor are either OFF or run at 100%. Impressive!

really looking forward to this. I'd like to build a device like this for machine building purposes.

Haven't been this excited about a DIY photonics project in a long time.

Insane! I love your attention to Details, very impressive work 😊