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Nonlinear optics in wavelength-size waveguides: how far can the conversion efficiency be pushed?

Nonlinear optics in wavelength-size waveguides: how far can the conversion efficiency be pushed?
Nonlinear optics in wavelength-size waveguides: how far can the conversion efficiency be pushed?
When their size approach the wavelength of light propagating in them, waveguides exhibit favorable properties such as high nonlinearity and strong confinement. These properties have been used for a variety of nonlinear effects, including supercontinuum generation, second-, third- and one-third- harmonic generation, pulse shaping and nonlinear switching.
Although simulations predicted conversion efficiencies well in excess of 30% for most of harmonic generation, experiments showed conversions of a fraction of a percent, at best.
This talk will discuss harmonic generation in wavelength-size waveguides and limitations to the practical achievement of theoretical efficiency. In particular, intrinsic surface roughness due to thermal surface waves frozen during fabrication provide a constantly changing detuning from the ideal phase matching conditions, considerably reducing the overall efficiency for waveguides longer than 1mm.
Abdul Khudus, M.I.M.
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Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Lee, Timothy
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Gouveia, Marcelo A.
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Wang, Pengfei
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Wang, Yun
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Ismaeel, Rand
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Huang, Tianye
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Wu, Zhifang
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Sun, Yujia
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Shao, Xuguang
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Shum, Perry
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Brambilla, Gilberto
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Abdul Khudus, M.I.M.
17127b8f-cde4-4c11-aca0-3c9151a42d94
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Gouveia, Marcelo A.
8ada4013-f50e-4d66-b485-f47ddf16cef2
Wang, Pengfei
a1ba240f-d4f0-4150-bcd8-cb418e841dcb
Wang, Yun
84511b41-72fa-46d3-845d-e92d6cab5332
Ismaeel, Rand
c1fb0984-a4c0-484a-8aef-625d48a62086
Huang, Tianye
802c90e3-cb40-4cf2-82f5-ef60d2169bf4
Wu, Zhifang
397f70a9-aed7-43c6-ab3c-e73303520730
Sun, Yujia
b99327a8-2122-4f91-b978-f4b89b82b493
Shao, Xuguang
02d0b239-e3a1-4d8c-a7cd-07670b56969d
Shum, Perry
48b24037-369e-475c-8d4c-35d30f3e0f65
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

Abdul Khudus, M.I.M., Horak, Peter, Lee, Timothy, Gouveia, Marcelo A., Wang, Pengfei, Wang, Yun, Ismaeel, Rand, Huang, Tianye, Wu, Zhifang, Sun, Yujia, Shao, Xuguang, Shum, Perry and Brambilla, Gilberto (2015) Nonlinear optics in wavelength-size waveguides: how far can the conversion efficiency be pushed? ICMAT2015: International Conference on Materials for Advanced Technologies, Singapore. 28 Jun - 03 Jul 2015.

Record type: Conference or Workshop Item (Other)

Abstract

When their size approach the wavelength of light propagating in them, waveguides exhibit favorable properties such as high nonlinearity and strong confinement. These properties have been used for a variety of nonlinear effects, including supercontinuum generation, second-, third- and one-third- harmonic generation, pulse shaping and nonlinear switching.
Although simulations predicted conversion efficiencies well in excess of 30% for most of harmonic generation, experiments showed conversions of a fraction of a percent, at best.
This talk will discuss harmonic generation in wavelength-size waveguides and limitations to the practical achievement of theoretical efficiency. In particular, intrinsic surface roughness due to thermal surface waves frozen during fabrication provide a constantly changing detuning from the ideal phase matching conditions, considerably reducing the overall efficiency for waveguides longer than 1mm.

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Published date: 29 June 2015
Venue - Dates: ICMAT2015: International Conference on Materials for Advanced Technologies, Singapore, 2015-06-28 - 2015-07-03
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 382321
URI: https://eprints.soton.ac.uk/id/eprint/382321
PURE UUID: db226eba-65f7-4705-839d-ab6e5b258db0
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764
ORCID for Yun Wang: ORCID iD orcid.org/0000-0001-9125-8047
ORCID for Yujia Sun: ORCID iD orcid.org/0000-0002-3783-6990

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Date deposited: 28 Oct 2015 11:43
Last modified: 17 Nov 2018 01:34

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Contributors

Author: M.I.M. Abdul Khudus
Author: Peter Horak ORCID iD
Author: Timothy Lee
Author: Pengfei Wang
Author: Yun Wang ORCID iD
Author: Rand Ismaeel
Author: Tianye Huang
Author: Zhifang Wu
Author: Yujia Sun ORCID iD
Author: Xuguang Shao
Author: Perry Shum

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