A5046787716- Solid State Laser Technologies
- Spectroscopy and Laser Applications
- Nuclear Physics and Applications
- High-pressure geophysics and materials
- Advanced Fiber Laser Technologies
- Laser-Plasma Interactions and Diagnostics
- Radiation Detection and Scintillator Technologies
- Laser Design and Applications
- Planetary Science and Exploration
- Astro and Planetary Science
- Radiation Therapy and Dosimetry
- Laser-Matter Interactions and Applications
University of Rochester
2016-2022
Energetics (United States)
2019-2022
Experiments in high-energy-density physics often use optical pyrometry to determine temperatures of dynamically compressed materials. In combination with simultaneous shock-velocity and optical-reflectivity measurements using velocity interferometry, these experiments provide accurate equation-of-state data at extreme pressures (P > 1 Mbar) (T 0.5 eV). This paper reports on the absolute calibration streaked pyrometer (SOP) Omega Laser Facility. The wavelength-dependent system response was...
In microchannel plate applications, such as in space telescopes, night-vision devices, or time-of-flight particle detection, reducing the sensitivity to signals from background sources, γ-rays, is beneficial for system design and performance. The response of a single-stage lead-free borosilicate-glass 14-MeV neutrons γ-rays produced via (n, γ) reactions surrounding structures was investigated at OMEGA. average efficiency values secondary electron production were found be (5.1 ± 0.7) × 10−3...
A new neutron time-of-flight (nTOF) detector for deuterium-deuterium (DD)-fusion yield and ion-temperature measurements was designed, installed, calibrated the OMEGA Laser Facility. This provides an additional line of sight DD yields exceeding 1 × 1010 with higher precision than existing detectors. The nTOF consists a 90-mm-diam, 20-mm-thick BC-422 scintillator gated Photek photomultiplier tube (PMT240). PMT collects scintillating light through 20-mm side without use guide. There is no lead...
Solid-state optical comb-pulse generators provide a convenient and accurate method to include timing fiducials in streak camera image for time base correction. Commercially available vertical-cavity surface-emitting lasers (VCSEL's) emitting the visible currently use can be modulated up 2 GHz. An optically passive is presented interleave time-delayed path of 2-GHz comb with itself, producing 4-GHz comb. This technique applied VCSEL's higher modulation rates. A fiber-delivered, randomly...
Solid-state optical fiducial timing pulse generators provide a convenient and accurate method to include fiducials in streak-camera image for time-base correction. Current commercially available vertical-cavity surface-emitting lasers (VCSELs) emitting the visible range can be amplitude modulated up 5 GHz. An optically passive is utilized interleave time-delayed path of 5-GHz pulsed light with itself, producing 10-GHz fiducial, or comb. Comb rates at 0.5, 1.0, 2.5 GHz also selected. The...