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RGB generation by four-wave mixing in small-core holey fibers

RGB generation by four-wave mixing in small-core holey fibers
RGB generation by four-wave mixing in small-core holey fibers
We report the generation of white light comprising red, green, and blue spectral bands from a frequency-doubled fiber laser by an efficient four-wave mixing process in submicron-sized cores of microstructured holey fibers. A master-oscillator power amplifier (MOPA) source based on Yb-doped fiber is employed to generate 80 ps pulses at 1060 nm wavelength with 32 MHz repetition rate, which are then frequency-doubled in an LBO crystal to generate up to 2 W average power of green light. The green pump is then carefully launched into secondary cores of the cladding of photonic bandgap fibers. These secondary cores with diameters of about 400 to 800 nm act as highly nonlinear waveguides. At the output, we observe strong red and blue sidebands which, together with the remaining green pump light, form a visible white light source of about 360 mW. The generating process is identified as four-wave mixing where phase matching is achieved by birefringence in the secondary cores which arises from non-symmetric deformation during the fiber fabrication. Numerical models of the fiber structure and of the nonlinear processes confirm our interpretation. Finally, we discuss power scaling and limitations of the white light source due to the damage threshold of silica fibers.
nonlinear fiber optics, RGB generation, microstructured fibers
Horak, P.
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Dupriez, P.
4a46a78f-54e8-4611-822f-b55db0c37239
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Jeong, Y.
85777b88-d35d-4e46-addb-1894fde2385d
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d
Horak, P.
520489b5-ccc7-4d29-bb30-c1e36436ea03
Dupriez, P.
4a46a78f-54e8-4611-822f-b55db0c37239
Poletti, F.
9adcef99-5558-4644-96d7-ce24b5897491
Petrovich, M.N.
bfe895a0-da85-4a40-870a-2c7bfc84a4cf
Jeong, Y.
85777b88-d35d-4e46-addb-1894fde2385d
Nilsson, J.
f41d0948-4ca9-4b93-b44d-680ca0bf157b
Richardson, D.J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Payne, D.N.
4f592b24-707f-456e-b2c6-8a6f750e296d

Horak, P., Dupriez, P., Poletti, F., Petrovich, M.N., Jeong, Y., Nilsson, J., Richardson, D.J. and Payne, D.N. (2007) RGB generation by four-wave mixing in small-core holey fibers At SPIE Optics + Photonics 2007. 26 - 30 Aug 2007. 8 pp.

Record type: Conference or Workshop Item (Paper)

Abstract

We report the generation of white light comprising red, green, and blue spectral bands from a frequency-doubled fiber laser by an efficient four-wave mixing process in submicron-sized cores of microstructured holey fibers. A master-oscillator power amplifier (MOPA) source based on Yb-doped fiber is employed to generate 80 ps pulses at 1060 nm wavelength with 32 MHz repetition rate, which are then frequency-doubled in an LBO crystal to generate up to 2 W average power of green light. The green pump is then carefully launched into secondary cores of the cladding of photonic bandgap fibers. These secondary cores with diameters of about 400 to 800 nm act as highly nonlinear waveguides. At the output, we observe strong red and blue sidebands which, together with the remaining green pump light, form a visible white light source of about 360 mW. The generating process is identified as four-wave mixing where phase matching is achieved by birefringence in the secondary cores which arises from non-symmetric deformation during the fiber fabrication. Numerical models of the fiber structure and of the nonlinear processes confirm our interpretation. Finally, we discuss power scaling and limitations of the white light source due to the damage threshold of silica fibers.

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Published date: 2007
Venue - Dates: SPIE Optics + Photonics 2007, 2007-08-26 - 2007-08-30
Keywords: nonlinear fiber optics, RGB generation, microstructured fibers

Identifiers

Local EPrints ID: 49815
URI: http://eprints.soton.ac.uk/id/eprint/49815
PURE UUID: d8c7c45a-cadf-47fd-b2e9-513ac5d3890a
ORCID for P. Horak: ORCID iD orcid.org/0000-0002-8710-8764
ORCID for F. Poletti: ORCID iD orcid.org/0000-0002-1000-3083
ORCID for J. Nilsson: ORCID iD orcid.org/0000-0003-1691-7959

Catalogue record

Date deposited: 05 Dec 2007
Last modified: 30 Oct 2017 16:45

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Contributors

Author: P. Horak ORCID iD
Author: P. Dupriez
Author: F. Poletti ORCID iD
Author: M.N. Petrovich
Author: Y. Jeong
Author: J. Nilsson ORCID iD
Author: D.J. Richardson
Author: D.N. Payne

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