A5026155397- Solid State Laser Technologies
- Space Satellite Systems and Control
- Photorefractive and Nonlinear Optics
- Astro and Planetary Science
- Laser Design and Applications
- Spacecraft Design and Technology
- Laser Material Processing Techniques
- Semiconductor Lasers and Optical Devices
- Ocular and Laser Science Research
- Gamma-ray bursts and supernovae
- Advanced Fiber Laser Technologies
- Adaptive optics and wavefront sensing
- Advanced optical system design
- Satellite Communication Systems
- Glass properties and applications
- Optical Systems and Laser Technology
- Planetary Science and Exploration
- Traumatic Ocular and Foreign Body Injuries
- Space Exploration and Technology
- CCD and CMOS Imaging Sensors
- Laser-induced spectroscopy and plasma
- Luminescence Properties of Advanced Materials
Lawrence Livermore National Laboratory
1989-2012
University of California System
1989
University of Southern California
1987
The expansion of small satellite networks in Earth's orbit has resulted a plethora Earth optical imagery available to the civil, defense, and commercial sectors. Small satellites (less than 1000 kilograms (kg) mass) their constellations can be delivered rapidly at low cost, are more difficult target by adversaries - key consideration defense industry. Yet, size constraints often result reduced payload capacity, power or loss redundancy. Traditionally, cost an telescope on board scales...
The Space-based Telescopes for Actionable Refinement of Ephemeris (STARE) program will collect the information needed to help satellite operators avoid collisions in space by using a network nanosatellites determine more accurate trajectories selected objects orbiting Earth. In first phase STARE program, two pathfinder cube-satellites (CubeSats) equipped with an optical imaging payload are being developed and deployed demonstrate main elements concept. We give overview program. details...
Orbital collisions pose a hazard to space operations. Using high performance computer modeling and simulation environment for situational awareness, we explore new paradigm improving satellite conjunction analysis by obtaining more precise orbital information only those objects that collision risk greater than defined threshold specific set of satellites during specified time interval. In particular, assess the improvement in quality can be achieved using distributed network ground-based telescopes.
Quasi-cw operation of Ti:sapphire crystals pumped by a chopped cw argon-ion laser was used to determine gain and loss coefficients this material. A considerable variation in the material observed as function coordinates volume crystal, indicating crystal inhomogeneity.
Unique materials properties requirements for solid state high average power (HAP) lasers dictate a development research program. A review of the desirable laser, optical and thermo-mechanical HAP precedes an assessment status crystalline glass hosts optimized lasers.
The high-resolution absolute-intensity spectrum of a Vortek-arc lamp is obtained in order to evaluate the as candidate for pump source crystal-laser amplifiers. Spectra are also at lower resolution Ar-Kr and Ar-Xe mixtures. These spectra convolved with Nd:YAG absorption cross section assuming YAG crystal thickness 0.5 cm doping 2 x 10 20th/cu cm. Emphasis placed on wavelength intensity calibrations, assembling spectral regions, low-resolution spectra. A overlap bands discussed, well pulsed...
We report on methods for eliminating of optical absorption in neodymium, chromium doped gadolinium scandium gallium garnet (Nd;Cr:GSGG) due to tetravalent at the laser wavelength. These include doping crystal melt with specific additive as well post growth heat treatments.