Emission enhancement in Er3+/pr3+-codoped germanate glasses and their use as a 2.7-μm laser material

• 来源期刊: 中国光学快报（英文版）
• 年，卷（期）: 2013,（12）
• 页码范围: 63-65
• 页数: 3页
• 语种: 英文
• DOI: 10.3788/COL201311.121601

摘要

Emission enhancement at 2.7 μm is observed in Er3+/pr3+-codoped germanate glasses when pumped by a 980-nm laser diode.Significant reductions in 1.5-μm emission and upconversion intensity indicate efficient energy transfer between Er3+ and pr3+;the energy transfer efficiency is as high as 77.4％.The mechanisms of energy transfer are discussed in detail.The calculated emission cross-section of Er3+/pr3+-codoped germanate glass is 8.44× 10-21 cm2,which suggests that Er3+/pr3+-codoped germanate glass can be used to achieve efficient 2.7-μm emission.