Study of the behaviour of reflectance and phase change on reflection at thin and very thick films

✍ Scribed by L. Ward

• Book ID: 104160293
• Publisher: Elsevier Science
• Year: 1998
• Tongue: English
• Weight: 256 KB
• Volume: 30
• Category: Article
• ISSN: 0030-3992
• DOI: 10.1016/s0030-3992(98)00026-7

✦ Synopsis

It is shown that equations for the four functions, R s , R p , F s and F p for solid materials can be expressed as either quartics in e 4 (e 4 =e 1 Àe 3 ) and e 2 or in polar co-ordinates; in each case, when e 2 is plotted against e 4 , heart-shaped ®gures are produced. Over the intermediate thickness range between the limit of validity of AbeleÁ s' equations and solids, the re¯ectances and phase changes show a series of maxima and minima due to interference between rays re¯ected from the top and bottom of the layer in agreement with the exact theory. The plots of these functions in the e 4 , e 2 plane change from circles (in the AbeleÁ s regime) to heart-shaped ®gures as the thickness increases.