Direct solar-pumped iodine laser amplifier. Final report, 1 March 1984-28 February 1990

Technical Report · Thu Mar 01 04:00:00 EST 1990

OSTI ID:6714956

Han, K S; Hwang, I H

The optimum conditions of a solar pumped iodine laser are found in this research for the case of a continuous wave operation and a pulsed operation. The optimum product of the pressure(p) inside the laser tube and the tube diameter(d) was pd=40 approx. 50 torr-cm on the contrary to the case of a high intensity flashlamp pumped iodine laser where the optimum value of the product is known to be pd=150 torr-cm. The pressure-diameter product is less than 1/3 of that of the high power iodine laser. During the research period, various laser materials were also studied for solar pumping. Among the laser materials, Nd:YAG is found to have the lowest laser threshold pumping intensity of about 200 solar constant. The Rhodamine 6G was also tested as the solar pumped laser material. The threshold pumping power was measured to be about 20,000 solar constant. The amplification experiment for a continuously pumped iodine laser amplifier was performed using Vortek solar simulator and the amplification factors were measured for single pass amplification and triple pass amplification of the 15 cm long amplifier tube. The amplification of 5 was obtained for the triple pass amplification.

• Research Organization: Hampton Inst., VA (USA)
• OSTI ID: 6714956
• Report Number(s): N-90-22030; NASA-CR--186442; NAS--1.26:186442
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
AMPLIFICATION
DOCUMENT TYPES
DYE LASERS
LASER MATERIALS
LASERS
LIQUID LASERS
MATERIALS
OPTICAL PUMPING
PROGRESS REPORT
PUMPING
RADIATIONS
SOLAR CONSTANT
SOLAR RADIATION
STELLAR RADIATION