Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating

Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating

We show that in a silicon double-groove grating with two different groove widths per period attached on top of a semi-infinite SiO2 substrate, almost 100% reflectivity is achieved for the -1st-order reflection with an incident angle of 60° in the Littrow mounting condition. The modal analysis reveal...

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Main Authors: Kota Ito, Hideo Iizuka
Format: Article
Language:English
Published: AIP Publishing LLC 2013-06-01
Series:AIP Advances
Online Access:http://link.aip.org/link/doi/10.1063/1.4811466
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spelling doaj-fbdd2a87eeb44b36971bef681f28d59c2020-11-25T00:40:32ZengAIP Publishing LLCAIP Advances2158-32262013-06-013606211906211910.1063/1.4811466Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove gratingKota ItoHideo IizukaWe show that in a silicon double-groove grating with two different groove widths per period attached on top of a semi-infinite SiO2 substrate, almost 100% reflectivity is achieved for the -1st-order reflection with an incident angle of 60° in the Littrow mounting condition. The modal analysis reveals that modes propagating in the upward and downward directions have nearly the same amplitudes at resonance. They are added constructively for the -1st-order reflection and destructively for the 0th-order reflection and the -1st-order and 0th-order transmission. The asymmetric structure with a dielectric material poses a unique feature as a four port device.http://link.aip.org/link/doi/10.1063/1.4811466
collection DOAJ
language English
format Article
sources DOAJ
author Kota Ito
Hideo Iizuka
spellingShingle Kota Ito
Hideo Iizuka
Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating
AIP Advances
author_facet Kota Ito
Hideo Iizuka
author_sort Kota Ito
title Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating
title_short Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating
title_full Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating
title_fullStr Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating
title_full_unstemmed Highly efficient -1st-order reflection in Littrow mounted dielectric double-groove grating
title_sort highly efficient -1st-order reflection in littrow mounted dielectric double-groove grating
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2013-06-01
description We show that in a silicon double-groove grating with two different groove widths per period attached on top of a semi-infinite SiO2 substrate, almost 100% reflectivity is achieved for the -1st-order reflection with an incident angle of 60° in the Littrow mounting condition. The modal analysis reveals that modes propagating in the upward and downward directions have nearly the same amplitudes at resonance. They are added constructively for the -1st-order reflection and destructively for the 0th-order reflection and the -1st-order and 0th-order transmission. The asymmetric structure with a dielectric material poses a unique feature as a four port device.
url http://link.aip.org/link/doi/10.1063/1.4811466
work_keys_str_mv AT kotaito highlyefficient1storderreflectioninlittrowmounteddielectricdoublegroovegrating
AT hideoiizuka highlyefficient1storderreflectioninlittrowmounteddielectricdoublegroovegrating
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