Direct solar-pumped iodine laser amplifier. Semiannual progress report, 1 March-30 September 1987

Technical Report · Thu Oct 01 00:00:00 EDT 1987

OSTI ID:5881726

Han, K S

This semiannual progress report covers the period from March 1, 1987 to September 30, 1987 under NASA grant NAG1-441 entitled Direct solar-pumped iodine laser amplifier. During this period Nd:YAG and Nd:Cr:GSGG crystals have been tested for the solar-simulator pumped cw laser, and loss mechanisms of the laser output power in a flashlamp-pumped iodine laser also have been identified theoretically. It was observed that the threshold pump-beam intensities for both Nd:YAG and Nd:Cr:GSGG crystals were about 1000 solar constants, and the cw laser operation of the Nd:Cr:GSGG crystal was more difficult than that of the Nd:YAG crystal under the solar-simulator pumping. The possibility of the Nd:Cr:GSGG laser operation with a fast continuously chopped pumping was also observed. In addition, good agreement between the theoretical calculations and the experimental data on the loss mechanisms of a flashlamp-pumped iodine laser at various fill pressures and various lasants was achieved.

• Research Organization: Hampton Inst., VA (USA)
• OSTI ID: 5881726
• Report Number(s): N-87-29820; NASA-CR-181391; NAS-1.26:181391
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DYE LASERS
AMPLIFIERS
OPTICAL PUMPING
NEODYMIUM LASERS
CHROMIUM
IODINE
NEODYMIUM
PROGRESS REPORT
SOLAR ENERGY
SOLAR SIMULATORS
ANALOG SYSTEMS
DOCUMENT TYPES
ELECTRONIC EQUIPMENT
ELEMENTS
ENERGY
ENERGY SOURCES
EQUIPMENT
FUNCTIONAL MODELS
HALOGENS
LASERS
LIQUID LASERS
METALS
NONMETALS
PUMPING
RARE EARTHS
RENEWABLE ENERGY SOURCES
SIMULATORS
SOLAR EQUIPMENT
SOLID STATE LASERS
TRANSITION ELEMENTS
420300* - Engineering- Lasers- (-1989)