IMAGING OF FLAMES AND COLD FLOWS IN AIR BY DIFFRACTION FROM A LASER-INDUCED GRATING

Authors
HEMMERLING B STAMPANONIPANARIELLO A
Citation
B. Hemmerling et A. Stampanonipanariello, IMAGING OF FLAMES AND COLD FLOWS IN AIR BY DIFFRACTION FROM A LASER-INDUCED GRATING, Applied physics. B, Photophysics and laser chemistry, 57(4), 1993, pp. 281-285
Citations number
11
Categorie Soggetti
Physics, Applied
Journal title
Applied physics. B, Photophysics and laser chemistry → ACNP
ISSN journal
07217269
Volume
57
Issue
4
Year of publication
1993
Pages
281 - 285
Database
ISI
SICI code
0721-7269(1993)57:4<281:IOFACF>2.0.ZU;2-V
Abstract
Nonresonant laser-induced gratings are created in gases employing the second-harmonic output of a Nd:YAG laser in a degenerate four-wave mix ing beam geometry. The diffraction efficiency of the gratings has been investigated as a function of laser intensity and gas pressure. Singl e-shot images of a helium flow in ambient air illustrate that diffract ion of light from a laser-induced grating has the potential for remote , two-dimensional diagnostics of gas mixing processes. In addition, th is coherent technique is used to image a sooty flame.