Nanosecond Gated Raman Spectroscopy for Standoff Detection of Hazardous Materials

UV gated Raman spectroscopy for standoff detection of explosives

Real-time detection and identification of explosives at a standoff distance is a major issue in efforts to develop defense against so-called improvised explosive devices (IED). It is recognized that the only method, which is potentially capable to standoff detection of minimal amounts of explosives is laser-based spectroscopy. LDS technique belongs to trace detection, namely to its micro-partic...

Standoff raman spectroscopy system for remote chemical detection

We have developed a class of aperture coding schemes for Remote Raman Spectrometers (RRS) that remove the traditional trade-off between throughput and spectral resolution. As a result, the size of the remote interrogation region can be driven by operational, rather than optical considerations. In this paper we present the design of our coded-aperture standoff spectroscopy system as well as expe...

High Performance Method for Skin Roughness Detection Using Raman Spectroscopy

Results of a Uv Teps/raman System for Standoff Detection of Energetic Materials

A fully integrated UV Townsend Effect Plasma Spectroscopy (TEPS)-Raman system has been constructed for use of standoff detection of energetic materials. A single 266nm Q-Switched Nd:YAG Laser was used for Raman excitation and TEPS plasma ignition. A nearly simultaneous 10.6um CO2 laser is employed for the signal enhancement in the TEPS measurements. Chemometric techniques are presented for anal...

Single Broadband Phase-Shaped Pulse Stimulated Raman Spectroscopy for Standoff Trace Explosive Detection.

Recent success with trace explosives detection based on the single ultrafast pulse excitation for remote stimulated Raman scattering (SUPER-SRS) prompts us to provide new results and a Perspective that describes the theoretical foundation of the strategy used for achieving the desired sensitivity and selectivity. SUPER-SRS provides fast and selective imaging while being blind to optical propert...