Abstract
Previously, the perfluoro-t-butyl iodide (CF3)3CI, or t-QF9I has been identified as the most promising lasant for a space-based, direct solar-pumped laser power system because of its good solar spectrum utilization, excellent laser kinetics, and minimal recycling requirements.1–3 The iodide t-C4F9I has demonstrated more than twice the laser output of n-C3F7I, the usual iodide, with flashlamp excitation,1 where the ratio of spectral irradiance in the absorption band of t-C4F9I and n-C3F7I was 1.4. However, this ratio is significantly different from the ratio 2.2 for the air mass zero (AMO) solar spectrum. Therefore, pumping t-C4F9I by a closely simulated solar spectrum is expected to give even better laser efficiency. This paper reports the results of a comparative study on laser performances of t-C4F9I and n-C3F7I under closely simulated solar pumping. The closely simulated solar irradiance was obtained by using a filtering jacket over the laser tube.
© 1991 Optical Society of America
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