Performance comparison of single-mode single-cladding thulium doped and thulium/holmium co-doped fiber lasers in ring cavity
Document Type
Article
Publication Date
1-1-2016
Abstract
We investigate and compare the performance of the thulium-doped fiber laser (TDFL) and thulium holmium co-doped fiber laser (THDFL) based on 800 nm pumping. Both fiber lasers generated a broadband amplified spontaneous emission (ASE) across a wavelength range of 1720-2010 nm, with a threshold pump power of 155.58 mW. The THDFL and the TDFL are operating at single wavelength of 1908.87 nm and at dual wavelength of 1931.62 nm and 1937.09 nm respectively with a signal-to-noise ratio (SNR) of more than 30 dB. We also discuss the cross-relaxation process for TDFL and energy transfer for THDFL operations. With 1550 nm pumping, the THDFL operates at 1986.4 nm due to energy transfer from Tm3+ to Ho3+ in the active medium.
Keywords
Thulium-doped fiber, Thulium-holmium doped fiber, Continuous-wave fiber laser
Divisions
fac_eng,PHYSICS
Funders
Ministry of Higher Education (Grant No: FRGS/1/2015/SG02/UITM/03/3),University of Malaya (Grant No: PG105-2014B)
Publication Title
Journal of Optoelectronics and Advanced Materials
Volume
18
Issue
9-10
Publisher
National Institute of Optoelectronics