Ali, S M M and Saidin, N and Damanhuri, S S A and Harun, S W and Halder, A and Paul, Mukul Chandra and Ahmad, H and Das, Shyamal and Pal, Mrinmay and Bhadra, Shyamal Kumar (2012) Comparison of linear and ring lasers of thulium-ytterbium co-doped fiber. In: 2012 International Conference on Computer and Communication Engineering, ICCCE 2012, 3 - 5 July 2012, Kuala Lumpur, Malaysia.

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Performance of a double-clad Tm 3+/Yb 3+ co-doped yttria-alumino-silicate fiber (TYDF) fiber laser are compared for linear laser and ring laser using 905nm and 931nm pump wavelengths. TYDF used has a D-shaped cross section structure with Tm 3+ concentration of 5.55à 10 19ions/cc and Yb 3+ concentration is 13.5à 10 19ions/cc. Cladding-pumping scheme is applied for this fiber. Linear laser operates at 1901nm which is the operating wavelength of the fiber-Bragg grating used in the configuration. Ring lasers operate at lower pump power threshold of only 0.8W and 1.2W for pump wavelengths of 931nm and 905nm, respectively. Linear lasers have much higher pump power thresholds of 1.2W and 2.2W for the same pump wavelengths used. Maximum output power of 7.03mW was achieved for linear laser pumped 905nm. Efficiency of linear laser using 905nm pump is 0.84 compared to ring laser's efficiency of only 0.56 using the same pump wavelength. For 931nm pump, linear laser efficiency is 0.70 while ring laser's efficiency is only 0.40. It is proven that linear laser gives superior performance in terms of maximum output power and efficiency compared to ring laser. It is also apparent that lasers pumped with 905nm is more efficient compared to 931nm pump. © 2012 IEEE.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Conference of 2012 International Conference on Computer and Communication Engineering, ICCCE 2012; Conference Date: 3 July 2012 through 5 July 2012; Conference Code: 93052 DOI: 10.1109/ICCCE.2012.6271262
Uncontrolled Keywords: cladding-punping; Co-doped; Cross section; Double clad fibers; Double-clad; Linear lasers; Lower pump power; Maximum output power; Operating wavelength; Pump power; Pump wavelength; thulium-ytterbium, Communication; Efficiency; Fiber lasers; Fibers; Glass fibers; Pumps; Ring lasers; Silicates; Thulium; Wavelength; Ytterbium, Pumping (laser)
Subjects: Processing Science
Divisions: Fiber Optics and Photonics
Depositing User: Bidhan Chaudhuri
Date Deposited: 07 Feb 2013 13:18
Last Modified: 07 Feb 2013 13:18

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