Title

Reflection Of Light By Composite Volume Holograms: Fresnel Corrections And Fabry-Perot Spectral Filtering

Abstract

Effects in composite volume Bragg gratings (VBGs) are studied theoretically and experimentally. The mathematics of reflection is formulated with a unified account of Fresnel reflections by the boundaries and of VBG reflection. We introduce the strength S of reflection by an arbitrary lossless element such that the intensity of reflection is R =tanh2 S. We show that the ultimate maximum /minimum of reflection by a composite lossless system corresponds to addition/subtraction of relevant strengths of the sequential elements. We present a new physical interpretation of standard Fresnel reflection: Strength for TE or for TM reflection is given by addition or by subtraction of two contributions. One of them is an angle-independent contribution of the impedance step, while the other is an angle-dependent contribution of the step of propagation speed. We study an assembly of two VBG mirrors with a thin immersion layer between them that constitutes a Fabry-Perot spectral filter. The transmission wavelength of the assembly depends on the phase shift between the two VBGs. Spectral resolution Δλ(FWHM) =25 pm at λ=1063.4 nm is achieved with the device of small total physical thickness 2L=5.52mm. © 2008 Optical Society of America.

Publication Date

1-1-2008

Publication Title

Journal of the Optical Society of America A: Optics and Image Science, and Vision

Volume

25

Issue

3

Number of Pages

751-764

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1364/JOSAA.25.000751

Socpus ID

44349090451 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/44349090451

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