OPTICAL PATTERNS OF THERMALLY SELF‐DEFOCUSED LIGHT
作者:
W. R. Callen,
B. G. Huth,
R. H. Pantell,
期刊:
Applied Physics Letters
(AIP Available online 1967)
卷期:
Volume 11,
issue 3
页码: 103-105
ISSN:0003-6951
年代: 1967
DOI:10.1063/1.1755036
出版商: AIP
数据来源: AIP
摘要:
In this Letter we discuss the observation of a pattern of concentric annuli formed as a result of thermal effects upon a light beam. To our knowledge, this is the first time such patterns have been reported.When a beam of light passes through an absorbing medium whose refractive index decreases as a function of temperature, the medium behaves as a negative lens. Gordon et al.1observed this phenomenon by placing a cell containing an absorbing liquid between the mirrors of a helium‐neon laser. The absorption constants for several liquids with very low absorbencies have been determined using this effect.2Rieckhoff3measured the increase in the diameter of a light beam that passed through a thermal self‐defocusing liquid placed external to the laser inter‐ferometer. Recently Leite et al.4demonstrated that this effect may be used as a power limiting device.
点击下载:
PDF
(161KB)
返 回