Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications

Gordon S. Humphries, Ralf Bauer, Michael Lengden

Research output: Contribution to conferencePaper

62 Downloads (Pure)

Abstract

A design is presented for an acoustically resonant cell, based on the excitation of azimuthal resonances, to enhance the sensitivity of multi-pass photoacoustic spectroscopy. The acoustic cell is fabricated in one part using a photo-polymerization based 3D-Printing technique. Characterization of the cell performance is undertaken using calibrated concentrations of methane. The quality factor (< 76) of the cell compares favorably to existing designs based on longitudinal resonances. The minimum detectable normalized noise equivalent absorption coefficient for the cell was measured as: 3.667×10^ -10 Wcm^-1 Hz^-1/2, resulting in a minimum sensitivity for methane of 6 ppm with 700 s of averaging.
Original languageEnglish
Number of pages3
Publication statusPublished - 30 Oct 2017
EventIEEE SENSORS 2017 - Scottish Exhibition and Conference Centre, Glasgow, United Kingdom
Duration: 29 Oct 20171 Nov 2017
http://www.ieee-sensors2017.org

Conference

ConferenceIEEE SENSORS 2017
CountryUnited Kingdom
CityGlasgow
Period29/10/171/11/17
Internet address

Keywords

  • photoacoustic sensors
  • 3D printed photoacoustic trace gas sensor
  • 3D Printing
  • photoacoustic spectroscopy (PAS)
  • laser absorption
  • TDLS

Fingerprint Dive into the research topics of 'Performance of a azimuthally excited 3D-printed resonator for multi-pass spectroscopic applications'. Together they form a unique fingerprint.

Cite this