Introduction to Terahertz Lecture Part 1

Physics Professor Mark Sherwin presents an introduction to Terahertz radiation and technology at UCSB's Broida Hall.
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This material is based upon work supported by the National Science Foundation under Grant Number DMR 1126894.
Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

[@elfriedy]

Let’s try and see

[@RR_DM]

Maybe something that could better detect fluctuations in temperature, where it is super important, like in the cabin of an aircraft, thanks again

[@MultiZirkon]

>This wasn't much about Terahertz. It was just a little junior high school standard stuff about the electro magnetic spectrum. Sorry, disappointed.

[@ronr.53400]

... eventually we all are 😁🤘

[@delmarphotonics]

The THz field is detected via Electro-optic (EO) sampling in a GaP crystal (DelMar Photonics Inc.) using a small percentage of the output of the ultrafastamplifier at 800 nm that is not used to seed the OPA. This crystal is different fromthe one used by Allodi et al.16in that it has a thin EO active layer optically con-tacted to a thicker inactive layer. Specifically, a GaP (110) layer 200 mm thick, andcapable of EO sampling, is optically contacted to a GaP (100) layer 4 mm thick thatis EO inactive. This provides the advantage of pushing etalon features, or recur-rences of the pulse in the time domain, outside the window being scanned. Thisensures that any changes between the sample scan and the reference scan in thetime domain will not lead to artificial signals in the frequency domain. www.researchgate.net/publication/265138100_THz_and_mid-IR_spectroscopy_of_interstellar_ice_analogs_Methyl_and_carboxylic_acid_groups

[@ronr.53400]

HEVEEEEE DOOOTY STUFFFF 😁🤘

[@ronr.53400]

lets grab the ben guy and interrogate 😁🤘