Wave Optics Theory of Rotary Compensators*

Holmes, D. A.

doi:10.1364/josa.54.001340

Cited by 20 publications

(7 citation statements)

References 10 publications

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“…(12) for N = 1.5 (glass film in air), and for two other values of N = 2.5 and 4 (Ge film in air in the IR). These results agree with those obtained by Holmes 6 (based on a different formulation) who suggested the use of a tilted dielectric slab as a compensator for the analysis of polarized light.…”

supporting

confidence: 91%

Transmission ellipsometry on transparent unbacked or embedded thin films with application to soap films in air

Azzam

1991

Appl. Opt.

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The ratio Pt = Tp/T, of the complex amplitude transmission coefficients for the p and s polarizations of a transparent unbacked or embedded thin film is examined as a function of the film thickness-to-wavelength ratio d/X and the angle of incidence 0 for a given film refractive index N. The maximum value of the differential transmission phase shift (or retardance), At = argPt, is determined, for given N and X, by a simple geometrical construction that involves the iso-k circle locus of Pt in the complex plane. The upper bound on this maximum equals arctan[N -(1N)]I21 and is attained in the limit of grazing incidence. An analytical noniterative method is developed for determining N and d of the film from Pt measured by transmission ellipsometry (TELL) at (p = 45°. An explicit expression for At of an ultrathin film, d/X << 1, is derived in product form that shows the dependence of At on N, , and d/X separately. The angular dependence is given by an obliquity factor, fo(0) = 21/2 sino tan, which is verified experimentally by TELL measurements on a stable planar soap film in air at X = 633 nm. The singularity of f at 4, = 90° is resolved; At is shown to have a maximum just short of grazing incidence and drops to 0 at 4 = 900. Because N and d/ are inseparable for an ultrathin film, N is determined by a Brewster angle measurement and d/X is subsequently obtained from At.Finally, the ellipsometric function in reflection Pr is related to that in transmission Pt.

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supporting

confidence: 91%

Transmission ellipsometry on transparent unbacked or embedded thin films with application to soap films in air

Azzam

1991

Appl. Opt.

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“…In principle, it is also possible to use other means for the bias adjustment. For example, one can employ the Babinet-Soleil compensator [26], the Ehringhaus compensator [26,35], the Berek compensator [26,36], or its analogue made of quartz [37], electro-optic, or piezo-optical modulators [38]. All of these methods could be readily calibrated for the quantitative bias variation.…”

Section: Differential Interference Contrast Microscopy (Dic) 27mentioning

confidence: 99%

Differential Interference Contrast Microscopy (DIC)

Shribak

2013

Biomedical Optical Phase Microscopy and Nanoscopy

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“…The retardation error is less than 4 ı between 400 and 1000 nm (see figure 2 in Furusho et al 1999 and table 1). The HWP is covered by glass with BBAR (Broad-Band Anti-Reflection coating) on both sides, which diminishes the retardation error due to surface reflections on the HWP, noted by Holmes (1964) and Serkowski (1974). The calcite Wollaston prism splits the incident beam into two orthogonal beams, namely, o-and e-rays.…”

Section: Overview Of the Optical Systemmentioning

confidence: 99%

Polarimetric Imager for Comets, PICO

Ikeda¹,

Kawakita²,

Furusho³

et al. 2007

Publications of the Astronomical Society of Japan

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We constructed an imaging polarimeter, PICO, that was optimized for comets and/or cometary objects. PICO has a field-of-view of 5 0 10 0 and employs a fixed Wollaston prism as an analyzer. In the case of polarimeters using a double-beam prism, such as a Wollaston prism, lateral chromatic aberrations originating from the prism often degrade the image quality and measurement accuracy. However, PICO suffers little lateral chromatic aberration due to compensation provided by newly designed lens systems that generate opposite lateral colors. Owing to this design, PICO can obtain highly resolved and very accurate polarization images throughout the FOV (field-of-view). The total accuracy is estimated to be ∆P ' OE.P =85/ 2 + 0:3 2 1=2 % in polarization degree and Â Ä 3 ı in position angle; these values are satisfactory for cometary studies.

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Wave Optics Theory of Rotary Compensators*

Cited by 20 publications

References 10 publications

Transmission ellipsometry on transparent unbacked or embedded thin films with application to soap films in air

Transmission ellipsometry on transparent unbacked or embedded thin films with application to soap films in air

Differential Interference Contrast Microscopy (DIC)

Polarimetric Imager for Comets, PICO

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