Prof. Mona Jarrahi

Prof. Jarrahi describes the terahertz gap, where her primary work lies. She and her team are developing high performance electronic and optoelectronic components, as well as imaging and spectroscopy systems that operate at teraherz frequencies. Applications include non-invasive chemical detection, security screening, and medical imaging. She wants students to learn to be independent thinkers, and to approach new problems and new challenges with confidence. And she talks about the importance of interdisciplinary research to solving the problems of the next generation. Website:
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  1. are you my cousin..?!
    my last name is jarrahi too..
    amazing I'm from Tunisia.. where are you from professor ??!💗💜💜

  2. I wonder why don't you mention about communication capabilities of THz frequencies? Moreover, besides the advantages of THz frequencies, its attenuation in even free space medium is high enough, so if we use it for any kind of bidirectional link it suffers from path loss for wireless application. Am I right?

  3. All of these are because technology is not efficient enough to fulfill all its capacity unless consuming large powers and bulky setups. I agree that some applications might not ask for high sensitivity or might not be too restricting in sensing environment and distance, for which existing terahertz technologies would be suitable. But this does not mean that we have realized all the promises of the terahertz field!

  4. Have you asked yourself why airport security scanners need to scan people from such a close distance, rather than a safer farther distance? Have you though why we can detect skin and breast cancer tumors with terahertz scanners, but not a tumor deeper inside human body?

  5. All these companies are doing a great job of pushing technology limits but we should not forget that we are still far from fulfilling all the capabilities offered at this frequency range. Have you ever thought why NASA Earth Observing System AURA Satellite is still carrying a bulky CO2 laser together with a massive supply of liquid helium and cryogenic setups to just measure the concentration of OH gas at 2.5 THz to evaluate the Ozone destruction process?

  6. It is not enough to just evaluate a system based on its compactness without looking at other specifications. If that was the case, even 10 years ago, one could use room-temperature Schottky diode-based frequency multiplier and rectifier from Virginia diodes and build a compact terahertz system, even more compact compared with what Picometrix, Zomega, Teraview, … are offering today. Another important aspect is what sensitivity, bandwidth, and spectral resolution the system offers.

  7. I'm just a layman, so please set me straight. What about handheld Zomega unit,- continuous wave, aforementioned API/Picometrix T-Ray 5000, (anomaly detection device), plused Time-domain, weighs 35 pounds, fully field tested), the work at Bridge12 next advances in MRI imaging with DNP-MNR, (a gyrotron instread of laser to generate THz – all compact and to my knowledge don't require any type of cooling…the recent Frauhafer unit, which is also 35 pds.TDI. Tell me what I'm missing? Thanks

  8. There is no doubt that Picometrix has greatly advanced terahertz sensing capabilities over years. However, existing technologies are not yet field-portable and cannot offer quantum-limited sensitivities required for chemical detection and imaging applications in various operational settings such as bio-sensing, atmospheric/space studies, medical imaging, and detection of chemical/biological hazards unless employing bulky cryogenic cooled setups.

  9. Terahertz electronics lab is very familiar with Picometrix and is already in close contact with them exchanging materials, supplies and ideas.

  10. How is possible that the University of Michigan terahertz group, has apparently never heard of picometrx which is a spin-off of the U of M, which is also located in Ann Arbor? Prof. Jarrahi, comments ignore the compact, industtrial hardened, powerful terahertz unit the T-Ray 4000, and soon the 5000, which belies her comments that existing THz units are bulky, inefficient, and not suited for industrial use. Amazing!!

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