Institute for Terahertz Science and Technology (ITST) in University of California Santa Barbara (UCSB)
The Mission for ITST is to advance science and technology at the heart of the electromagnetic spectrum while training and inspiring new generations of scientists, engineers, and the public at large and supporting research with outstanding service in a warm, welcoming and fun workplace.
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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.
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Thank you. As new medical devices are now available. Would be great to UPDATE these video tests. Please show us not only if it can see through (research tools)but can THz penetrate glass? Others show yes it can.
Thank you. Excellent lecture!!! Very nice demonstration of the power of THz.
Maybe something that could better detect fluctuations in temperature, where it is super important, like in the cabin of an aircraft, thanks again
I want to build a small one
🙏 thanks for showing and explanation, I now begin to “understand “ why teraherz frequencies can be useful in the medical field… 🙏
Let’s try and see
Skip right over to part 2 if you have at least half a brain.
lets grab the ben guy and interrogate 😁🤘
>This wasn't much about Terahertz. It was just a little junior high school standard stuff about the electro magnetic spectrum. Sorry, disappointed.
... eventually we all are 😁🤘
so this is non visible
this is cool orange is a fuzzy belt static gereatoer
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
HEVEEEEE DOOOTY STUFFFF 😁🤘
i want to know what it can not detect?? can it detect kitchenwaste like vegetable peals and tea leaves and others kitchen wastes..
As I know, THz is transparent with package like clothes, bags...
New publication! Terahertz nonlinear conduction and absorption saturation in silicon waveguides arxiv.org/abs/1503.05639 Shanshan Li, Gagan Kumar, Thomas E. Murphy (Submitted on 19 Mar 2015) We employ a silicon dielectric waveguide to confine and concentrate terahertz pulses, and observe that the absorption saturates under strong terahertz fields. By comparing the response between lightly-doped and intrinsic silicon waveguides, we confirm the role of hot carriers in this saturable absorption. We introduce a nonlinear dynamical model of Drude conductivity that, when incorporated into a wave propagation equation, accurately reproduces the observations and elucidates the physical mechanisms underlying this nonlinear effect. The results are numerically confirmed by Monte Carlo simulations of the Boltzmann transport equation, coupled with split-step nonlinear wave propagation. The following crystal was used to generate powerful THz radiation: Stoichiometric MgO(0.6%):LiNbO3 crystals - request a custom quote at [email protected] now in stock! www.dmphotonics.com/MgO-LiNbO3-wafers-crystals/MgO-LiNbO3%20wafer,%20Y-cut,%203inchx1.0%20mm,%20two%20sides%20polished.htm Common specifications MgO (0.6%) doped SLN crystal Size : 5.0 <001> * 5.0 <100 > * 9.81 <010> mm 2 faces 5 x 5 mm2 laser grade polished, with the end side cut at 63° and AR coating at 800nm on the both sides. All other specifications are according to custom drawing Part number: MgO(0.6%):LiNbO3_5_5_9.81 [MgO-LiNbO3-5-9.81-5] - in stock in online store! greyhawkoptics.com/product_info.php?products_id=821&osCsid=b761fe3823141aecaff0c8fe46579871
very good content but poor coordination....in presentation....