
Proceedings Paper
Design and performance analysis of a tunable and self-pulsation diode pumped double-clad D-shaped Yb3+-doped silica fiber laserFormat | Member Price | Non-Member Price |
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Paper Abstract
Ytterbium doped silica fibers exhibits very broad absorption and emission band, from ~800 nm to
~1064 nm for absorption and ~970 nm to ~1200 nm for emission according to the cavity length. A
wide range of applications for tunable ytterbium fiber laser like development of single-frequency
sources for spectroscopic applications, pumping source of Pr: ZBLAN amplifier and Tm: ZBLAN
up conversion laser, material processing and military applications. In this paper, a 976 nm high
power fiber coupled diode laser of up to 5 W end pumped ytterbium doped multimode D-shaped
fiber laser using Fabry-Perot cavity with different regime of operation with the output coupler
reflectivities of 80%, 60%, and Fresnel reflection of 4%. The output laser wavelength ranges from
1041 nm to 1094 nm for a cavity length from 1 m to 10 m, respectively. The optical to optical slope
efficiency of 45% at 1 m and increased to be 60% at 4 m cavity length were measured. The
maximum slope efficiency of 82.12% at cavity length of 2m were investigated with Fresnel
reflection output coupler, and the measured lowest threshold pump power for this configuration was
130 mW. Also, the self-pulsation phenomena were observed just at higher pumping power of more
than 4W and its threshold pumping power were (4.3W, 4.5W and 4.7W) with output coupler
reflectivities of (80%, 60%, and Fresnel reflection of 4%), respectively at 10 m fiber length.
Paper Details
Date Published: 23 August 2010
PDF: 16 pages
Proc. SPIE 7789, Laser Beam Shaping XI, 778911 (23 August 2010); doi: 10.1117/12.860462
Published in SPIE Proceedings Vol. 7789:
Laser Beam Shaping XI
Andrew Forbes; Todd E. Lizotte, Editor(s)
PDF: 16 pages
Proc. SPIE 7789, Laser Beam Shaping XI, 778911 (23 August 2010); doi: 10.1117/12.860462
Show Author Affiliations
Ashraf F. El-Sherif, Egyptian Armed Forces (Egypt)
Mohamed K. El-Tahlawy, Egyptian Armed Forces (Egypt)
Published in SPIE Proceedings Vol. 7789:
Laser Beam Shaping XI
Andrew Forbes; Todd E. Lizotte, Editor(s)
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