Journal of Lasers, Optics & Photonics

Subodh Kumar

Publications

• Research Article
  Standoff Detection of Hazardous Molecules for Defense Applications
  Author(s): Deepak Kumar, Subodh Kumar, Saurabh Gupta, Hari B Srivastava and Ramesh C SharmaDeepak Kumar, Subodh Kumar, Saurabh Gupta, Hari B Srivastava and Ramesh C Sharma
  
  The paper is focused on the development of measurement technique and processing of signal for the detection of chemical, explosive, biological agents and its simulants using Engineered Quartz Enhanced Laser Photoacoustic Spectroscopy (QE-LPAS) technique. Hazardous materials like Sarin, TATP (Tri acetone tri-peroxide) and their simulants like DMMP (Dimethyl Methyl Phosphonate), Acetone, and atmospheric species were detected at 7 to 11 μm wavelength band. QE PAS technique is developed and demonstrated from a standoff distance of up to 30 meters in gaseous/vapourous and aerosols based on retro-reflector in ~2.0 ppm concentration. Hazardous biomolecules like Tryphatophan and DPA were detected on diffused aluminum adsorbed surface plate. Explosive and its simulants, TNT on adsorbed surface and DMMP, Nitrobenzene, Acetone were detected in vapour/aerosol form. A dedicated single screen, s.. Read More»
  DOI: 10.4172/2469-410X.1000134

  Abstract PDF