Abstract
Energy transfer through absorbing media with pulses short compared to the acoustic transit time has been investigated experimentally and theoretically for collimated beams in a homogeneous wind field. Two experimental approaches were used: a low intensity cw CO2 laser probe beam technique giving a continuous record of the lensing of the medium following the transmission of a coaxial high power TEA laser pulse and a direct determination of high power pulse train blooming using a thermofax covered drum. The experimental results support the predictions of a geometric optics perturbation solution as well as those of existing propagation codes. An interesting case, namely, enhancement resulting in a 20–30% increase of the original nonbloomed peak intensity is observed when the pulse separation time is approximately 1–2 times the wind flow time across the beam.
© 1975 Optical Society of America
Full Article | PDF ArticleMore Like This
Rudolf G. Buser and Robert S. Rohde
Appl. Opt. 14(1) 50-55 (1975)
James Wallace and Joseph Pasciak
J. Opt. Soc. Am. 65(11) 1257-1260 (1975)
Paul J. Berger, Peter B. Ulrich, Jeanne T. Ulrich, and Frederick G. Gebhardt
Appl. Opt. 16(2) 345-354 (1977)