Journal
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
Volume 21, Issue 1, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2014.2344293
Keywords
Random media; Raman scattering; Rayleigh scattering; Distributed feedback lasers; optical fiber lasers
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Funding
- Natural Science Foundation of China [61205048, 61290312]
- Research Fund for the Doctoral Program of Higher Education of China [20120185120003]
- Fundamental Research Funds for the Central Universities [ZYGX2012J002]
- PCSIRT Project [IRT1218]
- 111 project [B14039]
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In this paper, we make a comprehensive study on a highly efficient half-open cavity design for high power random fiber laser (RFL). With the theoretical analysis, we optimize the cavity's fiber length for getting higher output power within the scheme, i.e., shorter fiber length is preferred for efficiently harvesting the first order random lasing at the open end of the cavity. As the verification of the theory, we experimentally demonstrate a high output power (7 W), highly efficient (70% optical conversion efficiency) RFL working at 1140 nm, using 10W 1090 nm laser as the pump source and only 1 km standard single-mode fiber as the distributed cavity.
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