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Filling factor, , is a quantity measuring the efficiency of absorption of pump in the core of a double-clad fiber.〔D. Kouznetsov, J. V. Moloney. Efficiency of pump in the double-clad fiber amplifiers. 2. Broken circular symmetry. JOSA B, 19, No.6, p.1259-1263 (2002). ()〕〔D. Kouznetsov, J. V. Moloney. Efficiency of pump absorption in double-clad fibers amplifiers. 3. Calculation of modes. JOSA B, 19, No.6, p.1304-1309 (2002). ()〕〔D. Kouznetsov, J. V. Moloney. Highly efficient, high gain, short wavelength and power scalable incoherent diode slab-pumped fiber laser amplifier. IEEE Journal of Quantum Electronics, v.39, No.11, p.1452-1461 (2003). ()〕 ==Definition== The efficiency of absorption of pumping energy in the fiber is an important parameter of a double-clad fiber laser. In many cases this efficiency can be approximated with : where : is the cross-sectional area of the cladding : is the radius of the core (which is taken to be circular) : is the absorption coefficient of pump light in the core : is the length of the double-clad fiber, and : is a dimensionless adjusting parameter, which is sometimes called the "filling factor"; 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Filling factor」の詳細全文を読む スポンサード リンク
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