Ultrafast laser inscribed integrated waveguide components for L-band interferometry

A. Arriola; Sebabrata Mukherjee; Debaditya Choudhury; L. Labadie; R. R. Thomson

doi:10.1117/12.2056494

Ultrafast laser inscribed integrated waveguide components for L-band interferometry

A. Arriola, Sebabrata Mukherjee, Debaditya Choudhury, L. Labadie, R. R. Thomson

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

3 Citations (Scopus)

Abstract

In this paper we report the fabrication and mid-infrared characterization (λ = 3.39 μm) of evanescent field directional couplers. These devices were fabricated using the femtosecond laser direct-writing technique in commercially available Gallium Lanthanum Sulphide (GLS) glass substrates. We demonstrate that the power splitting ratios of the devices can be controlled by adjusting the length of the interaction section between the waveguides, and consequently we demonstrate power splitting ratios of between 8% and 99% for 3.39 μm light. We anticipate that mid-IR beam integrated-optic beam combination instruments based on this technology will be key for future mid-infrared astronomical interferometry, particularly for nulling interferometry and earth-like exoplanet imaging.

Original language	English
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Publisher	SPIE
Volume	9146
ISBN (Print)	9780819496140
DOIs	https://doi.org/10.1117/12.2056494
Publication status	Published - 2014
Event	Optical and Infrared Interferometry IV - Montreal, United Kingdom Duration: 23 Jun 2014 → 27 Jun 2014

Conference

Conference	Optical and Infrared Interferometry IV
Country/Territory	United Kingdom
City	Montreal
Period	23/06/14 → 27/06/14

Keywords

astronomy
chalcogenide
direct-writing
evanescent field couplers
femtosecond
interferometry
mid-infrared

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10.1117/12.2056494

Cite this

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title = "Ultrafast laser inscribed integrated waveguide components for L-band interferometry",

abstract = "In this paper we report the fabrication and mid-infrared characterization (λ = 3.39 μm) of evanescent field directional couplers. These devices were fabricated using the femtosecond laser direct-writing technique in commercially available Gallium Lanthanum Sulphide (GLS) glass substrates. We demonstrate that the power splitting ratios of the devices can be controlled by adjusting the length of the interaction section between the waveguides, and consequently we demonstrate power splitting ratios of between 8% and 99% for 3.39 μm light. We anticipate that mid-IR beam integrated-optic beam combination instruments based on this technology will be key for future mid-infrared astronomical interferometry, particularly for nulling interferometry and earth-like exoplanet imaging.",

keywords = "astronomy, chalcogenide, direct-writing, evanescent field couplers, femtosecond, interferometry, mid-infrared",

author = "A. Arriola and Sebabrata Mukherjee and Debaditya Choudhury and L. Labadie and Thomson, {R. R.}",

year = "2014",

doi = "10.1117/12.2056494",

language = "English",

isbn = "9780819496140",

volume = "9146",

booktitle = "Proceedings of SPIE - The International Society for Optical Engineering",

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note = "Optical and Infrared Interferometry IV ; Conference date: 23-06-2014 Through 27-06-2014",

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TY - GEN

T1 - Ultrafast laser inscribed integrated waveguide components for L-band interferometry

AU - Arriola, A.

AU - Mukherjee, Sebabrata

AU - Choudhury, Debaditya

AU - Labadie, L.

AU - Thomson, R. R.

PY - 2014

Y1 - 2014

N2 - In this paper we report the fabrication and mid-infrared characterization (λ = 3.39 μm) of evanescent field directional couplers. These devices were fabricated using the femtosecond laser direct-writing technique in commercially available Gallium Lanthanum Sulphide (GLS) glass substrates. We demonstrate that the power splitting ratios of the devices can be controlled by adjusting the length of the interaction section between the waveguides, and consequently we demonstrate power splitting ratios of between 8% and 99% for 3.39 μm light. We anticipate that mid-IR beam integrated-optic beam combination instruments based on this technology will be key for future mid-infrared astronomical interferometry, particularly for nulling interferometry and earth-like exoplanet imaging.

AB - In this paper we report the fabrication and mid-infrared characterization (λ = 3.39 μm) of evanescent field directional couplers. These devices were fabricated using the femtosecond laser direct-writing technique in commercially available Gallium Lanthanum Sulphide (GLS) glass substrates. We demonstrate that the power splitting ratios of the devices can be controlled by adjusting the length of the interaction section between the waveguides, and consequently we demonstrate power splitting ratios of between 8% and 99% for 3.39 μm light. We anticipate that mid-IR beam integrated-optic beam combination instruments based on this technology will be key for future mid-infrared astronomical interferometry, particularly for nulling interferometry and earth-like exoplanet imaging.

KW - astronomy

KW - chalcogenide

KW - direct-writing

KW - evanescent field couplers

KW - femtosecond

KW - interferometry

KW - mid-infrared

U2 - 10.1117/12.2056494

DO - 10.1117/12.2056494

M3 - Conference contribution

AN - SCOPUS:84922725599

SN - 9780819496140

VL - 9146

BT - Proceedings of SPIE - The International Society for Optical Engineering

PB - SPIE

T2 - Optical and Infrared Interferometry IV

Y2 - 23 June 2014 through 27 June 2014

ER -

Ultrafast laser inscribed integrated waveguide components for L-band interferometry

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