Springer R, Pflaum C (2018)
Publication Type: Book chapter / Article in edited volumes
Publication year: 2018
Edited Volumes: SPIE Photonics Europe Proceedings
Event location: Strasbourg, France
The numerical simulation of a regenerative amplifier based on codoped Tm,Ho:YAG is presented. Within this
work, a maximum pulse energy of 3.1 mJ is observed for 0.9 kW continous wave end-pumping at 785 nm. The
simulation results demonstrate that interionic mechanisms such as upconversion and energy transfer significantly
influence the population of states and consequently, the amplification. In detail, the most dominant mechanisms
are identified by introducing the rate term kxNiNm as a quantity to compare the strength of all occuring
interionic mechanisms. It can then be shown that the energy transfer mechanism E6512 between Holmium and
Thulium ions is the greatest source of population loss for the upper lasing state 5 I7 in Holmium. In summary,
the presented model represents an efficient tool to characterize the influence of interionic mechanisms on the
extractable energy in solid-state media under pulsed operation.
Springer, R., & Pflaum, C. (2018). Influence of interionic energy transfer mechanisms in Tm,Ho:YAG on the maximum extractable energy in regenerative amplifiers. In SPIE Photonics Europe Proceedings..
Springer, Ramon, and Christoph Pflaum. "Influence of interionic energy transfer mechanisms in Tm,Ho:YAG on the maximum extractable energy in regenerative amplifiers." SPIE Photonics Europe Proceedings. 2018.