CWTe - TechTalk - Free-space sensing enabled by coherent pulsed circuits
Please be invited for the talk of Prof. Daniel van der Weide (University of Wisconsin - Madison).
Subject:
Free-space sensing enabled by coherent pulsed circuits
Time: Tuesday October 18, 14.00 – 15.00
Location: Flux 2.251 and MT Team (see bottom of this email for the link)
Abstract:
Sub-picosecond, multi-volt pulses have spectral content across the microwave through deep sub-millimeter wave regime, and coherent detection of polarized waves from such sources having antennas on-chip provides a broad range of possibilities for physical measurements. I will explain how nonlinear transmission line circuits operate, how they are fabricated and how they can be creatively applied for sensing (e.g., film thickness and radar) exploiting the spatial and temporal coherence of waves they produce.
Speakers Bio:
Daniel van der Weide is a pioneer in terahertz integrated circuits, having measured the shortest electronically generated and measured 480 fs, 3.5 V pulses using GaAs nonlinear transmission lines and samplers. At UW-Madison since 1999, Professor van der Weide has contributed to terahertz electronics with coherent measurements, ultrabroadband antennas, and slow-wave structures, recently publishing self-winding helices for THz traveling wave tubes.
He invented a triaxial antenna to deliver ablative power to cancer tissue, ultimately establishing NeuWave Medical, which has treated thousands of patients, acquired by J&J in 2016. He co-founded Elucent Medical Inc., treating hundreds of patients with wireless surgical navigation hailed as a breakthrough in breast cancer surgery.
His interests in coherent signal analysis in optical fiber for >100 Gbps communications led him to co-found Optametra, acquired by Tektronix 2011.
His IEEE Fellow citation reads, “for contributions to ultrafast terahertz electronics and biomedical applications of microwaves.”
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