A fiber based synchronously pumped tunable Raman laser in the NIR
A fiber based synchronously pumped tunable Raman laser in the NIR
Raman lasers have attracted much interest since they allow a very wide range of wavelengths to be generated [1]. Operation in the pulsed regime is compromised by the power dependence of the gain - different parts of the pulse with different instantaneous power will undergo differing amounts of Raman scattering leading to major variations in spectral content across the pulse (varying amounts of light in different Raman orders). To address this issue active pulse shaping technique can be applied to obtain rectangular shaped output pulses so that constant Raman gain can be ensured across the pulse profile [2]. Here we demonstrate a new approach combining pulse shaping with a synchronously pumped scheme [3] to produce narrower linewidths as well as higher extinction ratios between neighboring Raman Stokes lines. Several tens of nanometer of tuning range for each Stokes order and a total tuning range of over 200 nm was achieved using resonant feedback from an external bulk grating.
Alam, Shaif-ul
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Lin, Dejiao
3f549d76-a6b0-47a7-a1be-c0daa7d47468
Teh, Peh Siong
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Chen, Kang Kang
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Richardson, David J.
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Alam, Shaif-ul
2b6bdbe5-ddcc-4a88-9057-299360b93435
Lin, Dejiao
3f549d76-a6b0-47a7-a1be-c0daa7d47468
Teh, Peh Siong
ec22f853-00e2-42a7-9e68-8b1c5eee1271
Chen, Kang Kang
37c5f50d-c027-44bb-ac51-23624f4ebcd4
Richardson, David J.
ebfe1ff9-d0c2-4e52-b7ae-c1b13bccdef3
Alam, Shaif-ul, Lin, Dejiao, Teh, Peh Siong, Chen, Kang Kang and Richardson, David J.
(2011)
A fiber based synchronously pumped tunable Raman laser in the NIR.
European Conference on Lasers and Electro-Optics, , Munich, Germany.
22 - 26 May 2011.
Record type:
Conference or Workshop Item
(Paper)
Abstract
Raman lasers have attracted much interest since they allow a very wide range of wavelengths to be generated [1]. Operation in the pulsed regime is compromised by the power dependence of the gain - different parts of the pulse with different instantaneous power will undergo differing amounts of Raman scattering leading to major variations in spectral content across the pulse (varying amounts of light in different Raman orders). To address this issue active pulse shaping technique can be applied to obtain rectangular shaped output pulses so that constant Raman gain can be ensured across the pulse profile [2]. Here we demonstrate a new approach combining pulse shaping with a synchronously pumped scheme [3] to produce narrower linewidths as well as higher extinction ratios between neighboring Raman Stokes lines. Several tens of nanometer of tuning range for each Stokes order and a total tuning range of over 200 nm was achieved using resonant feedback from an external bulk grating.
More information
e-pub ahead of print date: 2011
Additional Information:
CJ1.3
Venue - Dates:
European Conference on Lasers and Electro-Optics, , Munich, Germany, 2011-05-22 - 2011-05-26
Organisations:
Optoelectronics Research Centre
Identifiers
Local EPrints ID: 341340
URI: http://eprints.soton.ac.uk/id/eprint/341340
PURE UUID: 74bcd63e-d1e5-43ee-9b23-4c59fc0b0df5
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Date deposited: 20 Jul 2012 10:08
Last modified: 15 Mar 2024 02:41
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Contributors
Author:
Shaif-ul Alam
Author:
Dejiao Lin
Author:
Peh Siong Teh
Author:
Kang Kang Chen
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