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Four-wave mixing UV generation in optical microfibers

Four-wave mixing UV generation in optical microfibers
Four-wave mixing UV generation in optical microfibers
UV generation via four-wave-mixing (FWM) in optical microfibres (OMFs) was demonstrated. This was achieved by exploiting the tailorable dispersion of the OMF in order to phase match the propagation constant of the four frequencies involved in the FWM process. In order to satisfy the frequency requirement for FWM, a Master Oscillator Power Amplifier (MOPA) working at the telecom C-band was connected to a periodically poled silica fibre (PPSF), producing a fundamental frequency (FF) at 1550.3nm and a second harmonic (SH) frequency at 775.2nm. A by-product of this second harmonic generation is the generation of a signal at the third harmonic (TH) frequency of 516.7nm via degenerate FWM. This then allows the generation of the fourth harmonic (FH) at 387.6nm and the fifth harmonic (5H) at 310nm via degenerate and nondegenerate FWM in the OMF.The output of the PPSF was connected to a pure silica core fibre which was being tapered using the modified flame brushing technique from an initial diameter of 125µm to 0.5µm. While no signal at any UV wavelength was initially observed, as the OMF diameter reached the correct phase matching diameters, signals at 387.6nm appeared. Signals at 310nm also appeared although it is not phase matched, as the small difference in the propagation constant is bridged by other nonlinear processes such as self-phase and cross phase modulation.
Abdul Khudus, Muhammad
17127b8f-cde4-4c11-aca0-3c9151a42d94
De Lucia, Francesco
cf9ad28f-b654-4375-90f6-2b60ee0088f3
Corbari, Costantino
273904e8-5f90-4110-bc17-3d3f2c27d461
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Sazio, Pier-John
0d6200b5-9947-469a-8e97-9147da8a7158
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
Abdul Khudus, Muhammad
17127b8f-cde4-4c11-aca0-3c9151a42d94
De Lucia, Francesco
cf9ad28f-b654-4375-90f6-2b60ee0088f3
Corbari, Costantino
273904e8-5f90-4110-bc17-3d3f2c27d461
Lee, Timothy
beb3b88e-3e5a-4c3f-8636-bb6de8040fcc
Horak, Peter
520489b5-ccc7-4d29-bb30-c1e36436ea03
Sazio, Pier-John
0d6200b5-9947-469a-8e97-9147da8a7158
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

Abdul Khudus, Muhammad, De Lucia, Francesco, Corbari, Costantino, Lee, Timothy, Horak, Peter, Sazio, Pier-John and Brambilla, Gilberto (2016) Four-wave mixing UV generation in optical microfibers. Photonics Europe 2016, Belgium, Belgium. 04 - 07 Apr 2016. 6 pp . (In Press) (doi:10.1117/12.2227585).

Record type: Conference or Workshop Item (Poster)

Abstract

UV generation via four-wave-mixing (FWM) in optical microfibres (OMFs) was demonstrated. This was achieved by exploiting the tailorable dispersion of the OMF in order to phase match the propagation constant of the four frequencies involved in the FWM process. In order to satisfy the frequency requirement for FWM, a Master Oscillator Power Amplifier (MOPA) working at the telecom C-band was connected to a periodically poled silica fibre (PPSF), producing a fundamental frequency (FF) at 1550.3nm and a second harmonic (SH) frequency at 775.2nm. A by-product of this second harmonic generation is the generation of a signal at the third harmonic (TH) frequency of 516.7nm via degenerate FWM. This then allows the generation of the fourth harmonic (FH) at 387.6nm and the fifth harmonic (5H) at 310nm via degenerate and nondegenerate FWM in the OMF.The output of the PPSF was connected to a pure silica core fibre which was being tapered using the modified flame brushing technique from an initial diameter of 125µm to 0.5µm. While no signal at any UV wavelength was initially observed, as the OMF diameter reached the correct phase matching diameters, signals at 387.6nm appeared. Signals at 310nm also appeared although it is not phase matched, as the small difference in the propagation constant is bridged by other nonlinear processes such as self-phase and cross phase modulation.

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PhotonicsEurope_397138_2016.pdf - Accepted Manuscript
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Accepted/In Press date: 27 April 2016
Venue - Dates: Photonics Europe 2016, Belgium, Belgium, 2016-04-04 - 2016-04-07
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 397138
URI: http://eprints.soton.ac.uk/id/eprint/397138
PURE UUID: 1a1db379-a197-4b31-8c01-688735686f69
ORCID for Timothy Lee: ORCID iD orcid.org/0000-0001-9665-5578
ORCID for Peter Horak: ORCID iD orcid.org/0000-0002-8710-8764
ORCID for Pier-John Sazio: ORCID iD orcid.org/0000-0002-6506-9266
ORCID for Gilberto Brambilla: ORCID iD orcid.org/0000-0002-5730-0499

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Date deposited: 30 Jun 2016 07:44
Last modified: 15 Mar 2024 03:13

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Contributors

Author: Muhammad Abdul Khudus
Author: Francesco De Lucia
Author: Costantino Corbari
Author: Timothy Lee ORCID iD
Author: Peter Horak ORCID iD
Author: Pier-John Sazio ORCID iD

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