Development of a Thermal Evaporation Cell for Gas-Phase Infrared Absorption Spectroscopy of Compounds with Low Volatility

Abstract

To facilitate in-depth hazard prediction models, we must understand the spectral properties of expulsion plumes from conventional weapon attacks. Precise data on the spectral absorption of three chemical weapon agent simulants, in the infrared regime, are required to properly determine the mass of simulant in expulsion plumes from field demonstrations and small scale tests. Data for triethyl phosphate (a Soman simulant), triethyl phosphite (a Sarin simulant), and tributyl phosphate (a VX simulant) are presented. A thermal evaporation cell was designed and built that incorporated features that are not commercially available.

All-solid-state rapidly tunable coherent 6-10 μm light source for lidar environmental sensing

“…On the other hand, absorption spectra of chemical agents are also observed from 6 to 11 µm. 1,2 To remotely conduct the identification and decontamination of chemical agents, the development of lidar system equipped with a high-energy tunable mid-infrared coherent light source as a transmitter is one of urgent issues for a safe and secure society.…”

Watt-level widely tunable femtosecond mid-infrared KTiOAsO4 optical parametric oscillator pumped by a 103 μm Yb:KGW laser

“…High-power, high-repetition-rate, continuously tunable femtosecond lasers in the near-infrared (NIR) and mid-infrared (MIR) ranges have many applications in various fields, such as time-resolved spectroscopy, optical microscopy, and pump-probe measurements [1][2][3][4][5]. Synchronously pumped femtosecond optical parametric oscillators (OPOs) based on nonlinear frequency conversion operating in the NIR region are potentially in great demand for optical communication to obtain optically high capacity and high data rates.…”