OSU Navigation Bar

The Ohio State University University Libraries Knowledge Bank

CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz

Please use this identifier to cite or link to this item: http://hdl.handle.net/1811/52411

Show full item record

Files Size Format View
abstract.gif 55.40Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
CPFT2.pptx 3.038Mb Microsoft PowerPoint 2007 View/Open
Slide1.GIF 100.0Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide2.GIF 77.45Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide3.GIF 84.93Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide4.GIF 89.37Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide5.GIF 89.97Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide6.GIF 100.2Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide7.GIF 72.15Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide8.GIF 85.63Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide9.GIF 109.0Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide10.GIF 92.74Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide11.GIF 89.47Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide12.GIF 115.2Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Slide13.GIF 102.0Kb GIF image Thumbnail of CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz

Title: CHIRPED-PULSE FOURIER TRANSFORM MM-WAVE SPECTROSCOPY FROM 260-290 GHz
Creators: Harris, Brent J.; Steber, Amanda L.; Neill, Justin L.; Lehmann, Kevin K.; Pate, Brooks H.
Issue Date: 2012
Abstract: A broadband chirped-pulse Fourier transform mm-wave spectrometer operating in the 260-290 GHz frequency range has been constructed. The spectrometer uses a dual channel arbitrary waveform generator to create both the chirped excitation pulse and local oscillator (LO) inputs to the mm-wave multiplier chains for excitation (x24) and detection in a sub-harmonic mixer. The excitation and LO pulses are derived from the same single frequency phase-locked microwave oscillator giving good phase stability to permit deep averages of the molecule free induction decay signals. The excitation chirp from 2 to 3.5 GHz is generated by a high-speed arbitrary waveform generator and provides direct access to the full bandwidth of the spectrometer. All frequency sources in the experiment are locked to a 10 MHz Rb-disciplined oscillator providing direct frequency calibration for molecular transitions in the Fourier transform frequency-domain spectrum. Benchmark measurements on methylamine, ethyl cyanide, acetonitrile, and acrylonitrile will be presented. The design advantages and disadvantages for full bandwidth and segmented measurements will be discussed with an emphasis on detection limits caused by the presence of spurious signals from either LO purity or intermodulation (IM) at the digitizer.
URI: http://hdl.handle.net/1811/52411
Other Identifiers: 2012-FC-06
Bookmark and Share