DETERMINATION OF THE REFRACTIVE-INDEX PROFILE OF LIGHT-FOCUSING RODS: ACCURACY OF A METHOD USING INTERPHAKO INTERFERENCE MICROSCOPY.

Yasuji Ohtsuka, Yasuhiro Koike

Research output: Contribution to journalArticle

52 Citations (Scopus)

Abstract

Two analysis procedures for determining the refractive-index profile using Interphako interference microscopy are compared for accuracy: (I) expressing the profile as a five-nomial equation; and (II) considering ray bending due to the index gradient and using Abel inversion. Computer simulations show that the errors are comparable except for index mismatching between the specimen periphery and immersion oil, where for both procedures (I) is more accurate than (II). The partial splitting method is more practicable than total splitting for a rodlike specimen. In addition, the improved partial splitting procedure facilitates reduction of error. Correlation between measured profiles and measuring conditions agreed with the simulations. It is concluded that (I) is preferable to (II) when n//p does not equal n//2 and that the improved partial splitting procedure is a practicable method for determining the index profile of a LFR.

Original languageEnglish
Pages (from-to)2866-2872
Number of pages7
JournalApplied Optics
Volume19
Issue number16
Publication statusPublished - 1980 Aug

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Refractive index
Microscopic examination
rods
refractivity
microscopy
interference
profiles
Computer simulation
submerging
rays
computerized simulation
oils
inversions
gradients
simulation
Oils

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

DETERMINATION OF THE REFRACTIVE-INDEX PROFILE OF LIGHT-FOCUSING RODS : ACCURACY OF A METHOD USING INTERPHAKO INTERFERENCE MICROSCOPY. / Ohtsuka, Yasuji; Koike, Yasuhiro.

In: Applied Optics, Vol. 19, No. 16, 08.1980, p. 2866-2872.

Research output: Contribution to journalArticle

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