4.6 Article

Generation of nanosecond THz pulses using a high gain ring resonator with a semiconductor switch

期刊

APPLIED PHYSICS LETTERS
卷 121, 期 4, 页码 -

出版社

AIP Publishing
DOI: 10.1063/5.0098718

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资金

  1. National of Institutes of Health (NIH) National Institute of Biomedical Imaging and Bioengineering (NIBIB) [R01-EB001965, R01-EB004866]
  2. DOE HEP [DESC0015566]
  3. DOE FES [DE-FC02-93ER54186]

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A 250 GHz quasi-optical ring resonator with an input coupler and three mirrors has been designed and tested. It utilizes a low-loss silicon wafer for output coupling when irradiated by a pulse from a 532 nm laser. The resonator generates high-power pulses and has a wide range of applications, including spectroscopy at low power and testing of accelerator structures and materials at high power.
A 250 GHz quasi-optical ring resonator consisting of an input coupler and three mirrors has been designed and tested. A low-loss silicon wafer in the ring provides output coupling of the stored power when irradiated by a pulse from a 532 nm laser. The ring created 5.8 ns , 268 mW output power pulses when excited by a 17 mW , 250 GHz continuously operating input source, achieving a power gain of 16. In a fully tuned ring, higher gain is achievable. If the ring was used with a pulsed input source having a pulse length of several times the fill time, the ring could be used as an efficient pulse compressor with similar high gain. The resonator has a wide range of applications, including, at low power, spectroscopy and, at high power, testing of accelerator structures and materials. (C) 2022 Author(s).

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