Now showing items 1-6 of 6

    • Gas Sensing using Terahertz Time-Domain Spectroscopy 

      Mittleman, Daniel M.; Jacobsen, R. H.; Neelamani, Ramesh; Baraniuk, Richard G.; Nuss, Martin C. (1998-01-15)
      A method for detection and identification of polar gases and gas mixtures based on the technique of terahertz time-domain spectroscopy is presented. This relatively new technology promises to be the first portable far-infared ...
    • Improved Tuning Fork for Terahertz Quartz-Enhanced Photoacoustic Spectroscopy 

      Sampaolo, Angelo; Patimisco, Pietro; Giglio, Marilena; Vitiello, Miriam S.; Beere, Harvey E.; Ritchie, David A.; Scamarcio, Gaetano; Tittel, Frank K.; Spagnolo, Vincenzo (2016)
      We report on a quartz-enhanced photoacoustic (QEPAS) sensor for methanol (CH₃OH) detection employing a novel quartz tuning fork (QTF), specifically designed to enhance the QEPAS sensing performance in the terahertz (THz) ...
    • Low power consumption quartz-enhanced photoacoustic gas sensor employing a quantum cascade laser in pulsed operation 

      Sampaolo, Angelo; Patimisco, Pietro; Gluszek, Aleksander; Hudzikowski, Arkadiusz; Giglio, Marilena; Zheng, Huadan; Tittel, Frank K.; Spagnolo, Vincenzo (2017)
      We report here an analysis of the performance of a quartz-enhanced photoacoustic (QEPAS) system operating in a pulsed mode by employing a quantum cascade laser (QCL). The QEPAS system is based on a quartz tuning fork (QTF) ...
    • Pure amplitude and wavelength modulation spectroscopy for detection of N2O using a three-sections quantum cascade laser 

      Patimisco, Pietro; Sampaolo, Angelo; Bidaux, Yves; Bismuto, Alfredo; Scott, Marshall; Jiang, James; Tittel, Frank K.; Spagnolo, Vincenzo (2017)
      We report on a novel quantum cascade laser (QCL) capable of operating in pure amplitude or wavelength modulation configuration thereby allowing the acquisition of background-free gas absorption-line profiles using ...
    • Quartz-Enhanced Photoacoustic Spectroscopy: A Review 

      Patimisco, Pietro; Scamarcio, Gaetano; Tittel, Frank K.; Spagnolo, Vincenzo (2014)
      A detailed review on the development of quartz-enhanced photoacoustic sensors (QEPAS) for the sensitive and selective quantification of molecular trace gas species with resolved spectroscopic features is reported. The basis ...
    • Single-tube on beam quartz-enhanced photoacoustic spectrophones exploiting a custom quartz tuning fork operating in the overtone mode 

      Giglio, Marilena; Sampaolo, Angelo; Patimisco, Pietro; Zheng, Huadan; Wu, Hongpeng; Dong, Lei; Tittel, Frank K.; Spagnolo, Vincenzo (2017)
      We report here on the realization of a single-tube on-beam quartz-enhanced photoacoustic (QEPAS) spectroscopy sensor employing a custom-made quartz tuning fork (QTF) with a large prong spacing. The prongs of the QTF have ...