Nanostructured GRIN microlenses for Gaussian beam focusing

Jedrzej M. Nowosielski; Ryszard Buczynski; Florian Hudelist; Andrew J. Waddie; Mohammad R. Taghizadeh

doi:10.1016/j.optcom.2009.12.047

Nanostructured GRIN microlenses for Gaussian beam focusing

Jedrzej M. Nowosielski, Ryszard Buczynski, Florian Hudelist, Andrew J. Waddie, Mohammad R. Taghizadeh

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

26 Citations (Scopus)

Abstract

Gaussian beam propagation through a novel high refractive index contrast nanostructured Gradient-Index (GRIN) microlens with an arbitrary refractive index distribution is investigated. The concept of the nanostructured GRIN microlenses is based on the effective medium theory and we show numerically, using the FDTD method, that nanostructured GRIN microlenses can focus Gaussian beams in an identical manner to conventional GRIN microlenses. Nanostructured GRIN microlenses have a reduced thickness by almost two orders of magnitude compared to conventional GRIN lenses. We also investigate the accuracy of the standard scalar and paraxial GRIN theory in the case of a very high contrast nanostructured GRIN microlens. The paraxial GRIN lens theory is shown only to give an approximate description of Gaussian beam propagation in such a high contrast nanostructured GRIN microlens. © 2009 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	1938-1944
Number of pages	7
Journal	Optics Communications
Volume	283
Issue number	9
DOIs	https://doi.org/10.1016/j.optcom.2009.12.047
Publication status	Published - 1 May 2010

Keywords

Effective medium theory
Gaussian beam propagation
GRIN lenses
Nanostructured media

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10.1016/j.optcom.2009.12.047

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title = "Nanostructured GRIN microlenses for Gaussian beam focusing",

abstract = "Gaussian beam propagation through a novel high refractive index contrast nanostructured Gradient-Index (GRIN) microlens with an arbitrary refractive index distribution is investigated. The concept of the nanostructured GRIN microlenses is based on the effective medium theory and we show numerically, using the FDTD method, that nanostructured GRIN microlenses can focus Gaussian beams in an identical manner to conventional GRIN microlenses. Nanostructured GRIN microlenses have a reduced thickness by almost two orders of magnitude compared to conventional GRIN lenses. We also investigate the accuracy of the standard scalar and paraxial GRIN theory in the case of a very high contrast nanostructured GRIN microlens. The paraxial GRIN lens theory is shown only to give an approximate description of Gaussian beam propagation in such a high contrast nanostructured GRIN microlens. {\textcopyright} 2009 Elsevier B.V. All rights reserved.",

keywords = "Effective medium theory, Gaussian beam propagation, GRIN lenses, Nanostructured media",

author = "Nowosielski, {Jedrzej M.} and Ryszard Buczynski and Florian Hudelist and Waddie, {Andrew J.} and Taghizadeh, {Mohammad R.}",

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language = "English",

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TY - JOUR

T1 - Nanostructured GRIN microlenses for Gaussian beam focusing

AU - Nowosielski, Jedrzej M.

AU - Buczynski, Ryszard

AU - Hudelist, Florian

AU - Waddie, Andrew J.

AU - Taghizadeh, Mohammad R.

PY - 2010/5/1

Y1 - 2010/5/1

N2 - Gaussian beam propagation through a novel high refractive index contrast nanostructured Gradient-Index (GRIN) microlens with an arbitrary refractive index distribution is investigated. The concept of the nanostructured GRIN microlenses is based on the effective medium theory and we show numerically, using the FDTD method, that nanostructured GRIN microlenses can focus Gaussian beams in an identical manner to conventional GRIN microlenses. Nanostructured GRIN microlenses have a reduced thickness by almost two orders of magnitude compared to conventional GRIN lenses. We also investigate the accuracy of the standard scalar and paraxial GRIN theory in the case of a very high contrast nanostructured GRIN microlens. The paraxial GRIN lens theory is shown only to give an approximate description of Gaussian beam propagation in such a high contrast nanostructured GRIN microlens. © 2009 Elsevier B.V. All rights reserved.

AB - Gaussian beam propagation through a novel high refractive index contrast nanostructured Gradient-Index (GRIN) microlens with an arbitrary refractive index distribution is investigated. The concept of the nanostructured GRIN microlenses is based on the effective medium theory and we show numerically, using the FDTD method, that nanostructured GRIN microlenses can focus Gaussian beams in an identical manner to conventional GRIN microlenses. Nanostructured GRIN microlenses have a reduced thickness by almost two orders of magnitude compared to conventional GRIN lenses. We also investigate the accuracy of the standard scalar and paraxial GRIN theory in the case of a very high contrast nanostructured GRIN microlens. The paraxial GRIN lens theory is shown only to give an approximate description of Gaussian beam propagation in such a high contrast nanostructured GRIN microlens. © 2009 Elsevier B.V. All rights reserved.

KW - Effective medium theory

KW - Gaussian beam propagation

KW - GRIN lenses

KW - Nanostructured media

U2 - 10.1016/j.optcom.2009.12.047

DO - 10.1016/j.optcom.2009.12.047

M3 - Article

SN - 0030-4018

VL - 283

SP - 1938

EP - 1944

JO - Optics Communications

JF - Optics Communications

IS - 9

ER -

Nanostructured GRIN microlenses for Gaussian beam focusing

Abstract

Keywords

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