Journal
LASER PHYSICS
Volume 22, Issue 1, Pages 203-206Publisher
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1054660X11230125
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Funding
- National Natural Science Foundation of China [11074078]
- Specialized Research Fund for the Doctoral Program of Higher Education, China [20094407110002]
- Foundation for Distinguished Young Talents in Higher Education of Guangdong, China [C10183]
- Key Program for Scientific and Technological Innovations of Higher Education Institutes in Guangdong Province [cxzd1011]
- South China Normal University, China
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A wide-band tunable passively Q-switched all-fiber ring laser based on nonlinear polarization rotation (NPR) technique is demonstrated. The NPR-induced intensity-dependent loss effect acts as an artificial saturable absorber, which was used to achieve the Q-switched operation with a low pump threshold of about 25 mW. Taking advantage of the intracavity birefringence-induced spectral filtering effect, the central wavelength of Q-switched pulse can be continuously tuned from 1543.4 to 1592.4 nm by simply rotating the PCs.
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