Power scaling of ytterbium-doped fiber superfluorescent sources
Wang, P., Sahu, J.K. and Clarkson, W.A. (2007) Power scaling of ytterbium-doped fiber superfluorescent sources. IEEE Journal of Selected Topics in Quantum Electronics, 13, (3), 580-587. (doi:10.1109/JSTQE.2007.897181).
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Description/Abstract
Power scaling of ytterbium-doped fiber superfluorescent sources based on single-stage and two-stage cladding-pumped fiber configurations is reported. For the single-stage configuration, a novel fiber-end termination scheme was employed to suppress laser oscillation in combination with a simple all-fiber scheme for achieving a predominantly single-ended output. The fiber was cladding-pumped by a diode stack at 976 nm and yielded ~62 W of single-ended amplified spontaneous emission output for 119 W of launched pump power, limited by the onset of parasitic lasing. At pump powers in excess of 40 W, the slope efficiency with respect to the launched pump power was 67%. The emission spectrum spanned the wavelength range from 1030 to 1100 nm and the bandwidth (FWHM) was 12 nm. Scaling to higher power levels was demonstrated using a two-stage cladding-pumped fiber configuration comprising of a low-power fiber superfluorescent seed source and a high-power amplifier. The two-stage source yielded 122W of amplified spontaneous emission output (limited by available pump power) in a beam with M ~ 2.1. The slope efficiency for the amplifier with respect to the launched pump power was 77%. The prospects for further improvement in performance and output power are considered.
| Item Type: | Article |
|---|---|
| ISSNs: | 1077-260X (print) |
| Related URLs: | |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > Optoelectronics Research Centre |
| Item ID: | 47785 |
| Date Deposited: | 10 Aug 2007 |
| Last Modified: | 10 May 2013 01:03 |
| Contributors: | Wang, P. (Author) Sahu, J.K. (Author) Clarkson, W.A. (Author) |
| Date: | May 2007 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/47785 |
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