Laser Characteristics of Cladding-Pumped Short Er3+/yb3+ Codoped Single Mode Phosphate Glass Fibre

• 来源期刊: 中国物理快报(英文版)
• 年，卷（期）: 2009,（1）
• 页码范围: 105-107
• 页数: 3页
• 语种: 英文

摘要

We experimentally investigate the laser characteristics of a ser/es of short pieces of newly-developed Er3+/Yb3+ codoped single mode phosphate glass fibres via the cladding pump of a 976nm multimode laser diode. A stable continuous-wave single transverse mode laser with over 85 m W at 1553 nm is generated from a 5.5-cm-long active fibre. Single mode laser output power per unit length is up to 15 m W/cm. Moreover, the slope efficiency is 11.8% when the pump power is below 940mW and the 3dB linewidth is 0.06nm at the maximum pump power. The numerical simulation results show that the laser emission slope efficiency can exceed 20% by means of increasing the coupling efficiency of the pump to the fibre core further.