- Full text PDF available (1)
- This year (0)
- Last 5 years (0)
- Last 10 years (3)
Journals and Conferences
We measured the 229 nm absolute ultraviolet (UV) Raman cross-sections of the explosives trinitrotoluene (TNT), pentaerythritol tetranitrate (PETN), cyclotrimethylene-trinitramine (RDX), the chemically related nitroamine explosive HMX, and ammonium nitrate in solution. The 229 nm Raman cross-sections are 1000-fold greater than those excited in the… (More)
We show that intracavity group-velocity dispersion compensation with the use of prisms composed of conventional optical materials can be accomplished while simultaneously eliminating the round-trip cavity cubic phase. The ability to compensate perfectly both second- and third-order dispersion exists for pulses whose central wavelengths lie within a range… (More)
A near-diffraction-limited transform-limited multiterawatt laser system that produces approximately 30-fs 125-mJ 800-nm pulses at a repetition rate of 10 Hz has been constructed. Methods for the control of femtosecond time-scale phase and amplitude distortions have been developed and implemented.
We propose three XUV laser schemes in the 30-50-nm wavelength region that can be driven by 10-Hz ultrashort-pulse terawatt laser systems. Tunneling ionization by circularly polarized radiation produces both the ions and hot electrons necessary to excite the upper laser level.
Pressurized rail tank cars transport large volumes of volatile liquids and gases throughout the country, much of which is hazardous and/or flammable. Our group is developing a trackside inspection system for these tank cars. It consists of five narrow frequency band pressure sensors with center frequencies of 40 and 75 kHz, a broad band microphone for sound… (More)
We have developed a new technique that uses Raman spectra obtained from multiple DUV excitation wavelengths for explosive detection. The strong dependence on excitation wavelength of the Raman signal provides a unique signature, improving specificity.
We present a strategy for integrating ‘agile electronics’ within optical network devices to create low power, low latency, and compact WDM LAN components suitable for avionics applications. We present the development of a multi-channel DWDM transmitter and the feasibility of an optical-electrical-optical (OEO) wavelength router for realization… (More)