Experimental high numerical aperture focusing with high contrast gratings

Annett B. Klemm; Daan Stellinga; Emiliano R. Martins; Liam Lewis; Guillaume Huyet; Liam O'Faolain; Thomas F. Krauss

doi:10.1364/OL.38.003410

Experimental high numerical aperture focusing with high contrast gratings

Annett B. Klemm^*, Daan Stellinga, Emiliano R. Martins, Liam Lewis, Guillaume Huyet, Liam O'Faolain, Thomas F. Krauss

^*Corresponding author for this work

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

Abstract

We demonstrate high aperture (up to NA ∼ 0.64) three-dimensional focusing in free space based on wavefrontengineered diffraction gratings. The grating lens’ optical response is tailored by spatially varying the grating ridge and groove width in two dimensions to achieve focal lengths of order 100 μm that are crucial for micro-optical applications. The phase profile of the lens includes multiple 2π phase jumps and was obtained by applying an algorithm for finding the optimal path for both phase and amplitude. Experimental measurements reveal a lateral spot size of 5 μm that is close to the size of a corresponding Airy disk.

Original language	English
Pages (from-to)	3410-3413
Number of pages	4
Journal	Optics Letters
Volume	38
Issue number	17
DOIs	https://doi.org/10.1364/OL.38.003410
Publication status	Published - 15 Feb 2014

Access to Document

10.1364/OL.38.003410

Cite this

@article{2c0786eeea134dfab8dd2e52614993bd,

title = "Experimental high numerical aperture focusing with high contrast gratings",

abstract = "We demonstrate high aperture (up to NA ∼ 0.64) three-dimensional focusing in free space based on wavefrontengineered diffraction gratings. The grating lens{\textquoteright} optical response is tailored by spatially varying the grating ridge and groove width in two dimensions to achieve focal lengths of order 100 μm that are crucial for micro-optical applications. The phase profile of the lens includes multiple 2π phase jumps and was obtained by applying an algorithm for finding the optimal path for both phase and amplitude. Experimental measurements reveal a lateral spot size of 5 μm that is close to the size of a corresponding Airy disk.",

author = "Klemm, \{Annett B.\} and Daan Stellinga and Martins, \{Emiliano R.\} and Liam Lewis and Guillaume Huyet and Liam O'Faolain and Krauss, \{Thomas F.\}",

year = "2014",

month = feb,

day = "15",

doi = "10.1364/OL.38.003410",

language = "English",

volume = "38",

pages = "3410--3413",

journal = "Optics Letters",

issn = "0146-9592",

publisher = "Optica Publishing Group (formerly OSA)",

number = "17",

}

TY - JOUR

T1 - Experimental high numerical aperture focusing with high contrast gratings

AU - Klemm, Annett B.

AU - Stellinga, Daan

AU - Martins, Emiliano R.

AU - Lewis, Liam

AU - Huyet, Guillaume

AU - O'Faolain, Liam

AU - Krauss, Thomas F.

PY - 2014/2/15

Y1 - 2014/2/15

N2 - We demonstrate high aperture (up to NA ∼ 0.64) three-dimensional focusing in free space based on wavefrontengineered diffraction gratings. The grating lens’ optical response is tailored by spatially varying the grating ridge and groove width in two dimensions to achieve focal lengths of order 100 μm that are crucial for micro-optical applications. The phase profile of the lens includes multiple 2π phase jumps and was obtained by applying an algorithm for finding the optimal path for both phase and amplitude. Experimental measurements reveal a lateral spot size of 5 μm that is close to the size of a corresponding Airy disk.

AB - We demonstrate high aperture (up to NA ∼ 0.64) three-dimensional focusing in free space based on wavefrontengineered diffraction gratings. The grating lens’ optical response is tailored by spatially varying the grating ridge and groove width in two dimensions to achieve focal lengths of order 100 μm that are crucial for micro-optical applications. The phase profile of the lens includes multiple 2π phase jumps and was obtained by applying an algorithm for finding the optimal path for both phase and amplitude. Experimental measurements reveal a lateral spot size of 5 μm that is close to the size of a corresponding Airy disk.

UR - https://www.scopus.com/pages/publications/84897401784

U2 - 10.1364/OL.38.003410

DO - 10.1364/OL.38.003410

M3 - Article

SN - 0146-9592

VL - 38

SP - 3410

EP - 3413

JO - Optics Letters

JF - Optics Letters

IS - 17

ER -

Experimental high numerical aperture focusing with high contrast gratings

Abstract

Access to Document

Other files and links

Fingerprint

Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light

Light management in optoelectronic devices

Cite this

Experimental high numerical aperture focusing with high contrast gratings

Abstract

Access to Document

Other files and links

Fingerprint

Projects

Challening the Limits of Photonics: stru: Challenging the Limits of Photonics: Structured Light

Student theses

Light management in optoelectronic devices

Cite this