Authors:
Lin Htein
1
;
Pramod R. Watekar
2
;
Weiwei Fan
1
;
Seongmin Ju
1
;
Bok Hyeon Kim
1
and
Won-Taek Han
1
Affiliations:
1
Gwangju Institute of Science and Technology, Korea, Republic of
;
2
Sterlite Technologies Limited, India
Keyword(s):
Broadband Fiber Laser, Codoped Optical Fiber, Energy Transfer, near Infrared Emission, Nd3+, Tm3+, Spectroscopic Properties.
Related
Ontology
Subjects/Areas/Topics:
Fiber Lasers and Applications
;
Fiber Optics
;
Lasers
;
Optics
;
Photonics, Optics and Laser Technology
;
Spectroscopy, Imaging and Metrology
Abstract:
The emission bands at 934, 1083, 1279, 1362, 1414 and 1720 nm were found to appear from the Tm3+/Nd3+ codoped optical fiber upon excitation at 633 nm. Near infrared emissions of Tm3+ at 1279, 1414 and 1720 nm confirmed a very efficient energy transfer (ET) between Tm3+ and Nd3+ ions. Since the emission band of Nd3+ at 1362 nm helped to bridge the wavelength gap between the emission peaks of Tm3+ at 1279 and 1414 nm, the ET process made the Tm3+/Nd3+ codoped fiber applicable in broadband fiber laser operating around 1215–1515 nm. Further, cross-sections for the respective bands, spectroscopic properties and nonlinear characteristics of the Tm3+/Nd3+ codoped fiber were investigated.