材料科学
光纤激光器
铥
光学
边坡效率
光电子学
包层(金属加工)
激光器
放大器
二极管
光纤放大器
兴奋剂
波长
物理
冶金
CMOS芯片
作者
Justin Cook,Alex Sincore,Nicholas Vail,Ria G. Krämer,Thorsten A. Goebel,Patrick Roumayah,Joshua Bryan,Nathan Bodnar,Stefan Nolte,Martin Richardson
出处
期刊:Optics Express
[The Optical Society]
日期:2023-08-17
卷期号:31 (18): 29245-29245
被引量:2
摘要
We detail the design and performance of a high efficiency in-band pumped thulium fiber amplifier operating at the 100 W level. Using a novel pumping architecture based on three incoherently combined thulium fiber oscillators at 1904 nm and a seed laser tunable from 1970–1990 nm, efficient amplification is demonstrated in a high dopant concentration 25/65/250 µm thulium fiber. Here we use the 65 µm pedestal surrounding the core as a pump cladding to increase the cladding to core overlap and improve the overall pump absorption. Up to 89% slope efficiency is obtained with ∼100 W output power at 1990 nm. These results indicate that in-band pumping is a viable route to circumvent the thermal limitations associated with 793 nm diode pumping and provide a pathway for development of multi-kW laser sources in the 2 µm spectral window.
科研通智能强力驱动
Strongly Powered by AbleSci AI