Kyle Daane Chesnut

//PhD Student at @UCIrvine in Plasma Physics//
//Ultrafast Lasers ~ High-field Science ~ Nuclear Photonics//

[Kyle Daane Chesnut @KDChesnut]

@jwt0625 I did not know this interview existed, thanks for posting it! This is especially interesting to me as Harris was my advisor's advisor haha

[Kyle Daane Chesnut @KDChesnut]

@zerohedge With housing at all time unaffordability what if the money from refi's doesn't flow back into RE and there is a price decline in the housing market. What will happen if housing prices fall below where they were refi'd and rates are lower? Will people just walk away?

[Kyle Daane Chesnut @KDChesnut]

Biblically accurate laser far field

[Kyle Daane Chesnut @KDChesnut]

@jwt0625 Ya really interesting simulation work. Making radially polarized beams at high intensity is very difficult so they propose approximating it by combining multiple linearly polarized beams

[Kyle Daane Chesnut @KDChesnut]

@DKThomp Please stop talking about it, Oprah already did a number on the place with her "Happiest Town in America" hit piece

[Kyle Daane Chesnut @KDChesnut]

I don't think I've ever seen 4 named storms in the E Pacific at the same time. Unfortunately what was supposed to be a well organized hurricane is now split between Emilia and Fabio

[Kyle Daane Chesnut @KDChesnut]

Recent publication (1st author E Nelson not on X) in @OpticaPubsGroup from the Barty Group @UCIPhysAstro on the distortions of focused space-time entangled beams earned not just the Editor's Pick, but also, the even higher distinction, of being cited on RP Photonics

[Kyle Daane Chesnut @KDChesnut]

Initial alignment of the CW cavity produced a nice round beam with 1.1 W output power and ~30% optical-to-optical efficiency

[Kyle Daane Chesnut @KDChesnut]

I've been slow to update on this but the CW portion of the Ti:Sapphire oscillator build has progressed quite nicely! Picture here are the two curved mirrors for the z-fold cavity, crystal mount, and initial pump alignment.

[Kyle Daane Chesnut @KDChesnut]

@CliveWismayer We already did this on Dec 16, 1773

[Kyle Daane Chesnut @KDChesnut]

Finished prodcut

[Kyle Daane Chesnut @KDChesnut]

Home made water cooled Ti:Sapphire crystal mount. Modeled this up in SolidWorks then had it CNC'd out of copper. Had to get a bit creative with my hose barbs (couldn't find small enough compression fittings) so I soldered some single core wire I wound around the pipe.

[Kyle Daane Chesnut @KDChesnut]

Home made water cooled Ti:Sapphire crystal mount. Modeled this up in SolidWorks then had it CNC'd out of copper. Had to get a bit creative with my hose barbs (couldn't find small enough compression fittings) so I soldered some single core wire I wound around the pipe.

[Kyle Daane Chesnut @KDChesnut]

Interesting timing of the Apple and OpenAI deal just two months after articles came out describing that LLMs are running out of training data

[Kyle Daane Chesnut @KDChesnut]

Custom CNC'd and OEM parts for a Ti:Sapphire oscillator build

[Kyle Daane Chesnut @KDChesnut]

Laser twitter, if you have a used or new Pockels cell that would work for a Ti:Sapphire regenerative amplifier that you are willing to sell please DM me

[Kyle Daane Chesnut @KDChesnut]

@Steps66717589 Very interesting, thank you for the recommendation! After the two earthquakes here yesterday this is very pertinent haha

[Kyle Daane Chesnut @KDChesnut]

Restarting with a completely fresh optical table for my final project is simultaneously frightening and exciting (there is probably a German word for this).

[Kyle Daane Chesnut @KDChesnut]

@spencer_jolly Read this the other day! Cool work

[Kyle Daane Chesnut @KDChesnut]

Combined with two Brewster's angle porro prisms creates an ultrabroadband interferometer with output spectrally identical to the input. This is great for ultrafast pulse characterization and spectroscopy where the source and signal are the same.

https://t.co/feBVSNt9Pz

[Kyle Daane Chesnut @KDChesnut]

New technique just dropped on how to make identical spectral copies of ultrabroadband arbitrary light fields.

Recent pub in @OpticaPubsGroup from the Barty Group at @UCIPhysAstro details how to use the Fresnel reflections from an uncoated optic to create a novel beam spiltter.

[Kyle Daane Chesnut @KDChesnut]

Instead, one can combine multiple Fresnel events from an optical flat--at a very specific AOI--to produce a beam splitter with nearly zero spectral amplitude distortion over an ultrabroad bandwidth.