概括
本研究介绍了一种萨格纳克型干扰仪,用于中红外光纤激光器的高效连贯光束组合 (CBC). 该系统在连续波激光器中达到90%以上的效率,在超快激光器中达到84%.
科学领域:
- 光学和光子学 在光学和光子学.
- 激光物理 激光物理
- 光纤光学是指光纤的使用.
背景情况:
- 中红外 (中红外) 激光器对于各种应用至关重要,包括光谱学和遥感.
- 扩展光纤激光器的输出功率,特别是在中红外线中,仍然是一个重大挑战.
- 连贯光束组合 (CBC) 为高功率激光生成提供了一个有前途的途径.
研究的目的:
- 为中红外光纤激光器开发和演示高效连贯光束组合 (CBC) 系统.
- 为了研究CBC系统在连续波 (CW) 和超快脉冲操作下的性能.
- 评估使用拟议的萨格纳克型CBC设置的中红外CW和超快光纤激光器功率扩展的潜力.
主要方法:
- 采用两个化纤维放大器的萨格纳克型干扰仪的实施.
- 在2.8微米波长的CBC系统的操作和特征.
- 在连续波 (CW) 和皮秒脉冲 (1-ps) 激光条件下的测试.
主要成果:
- 在CW操作中实现了>90%的组合效率,提供2.8W的输出功率,M2 <1.2.2.
- 证明了1-ps脉冲的放大和时间压缩到~170 fs.
- 对于放大超快激光束,获得了~84%的CBC效率,导致~1W的重组功率.
结论:
- 萨格纳克型CBC系统在CW和超高速中红外光纤激光器上都表现出高效率.
- 该设置显示了光纤激光源在2.8μm光谱区域功率扩展的巨大潜力.
- 这种方法是产生高功率中红外激光输出的可行方法.
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