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Power scaling of Tm:YLF-pumped Ho:YAG lasers

Power scaling of Tm:YLF-pumped Ho:YAG lasers
Power scaling of Tm:YLF-pumped Ho:YAG lasers
Reported in this thesis are methodologies for power-scaling Ho:YAG lasers for both the continuous-wave (CW) and Q-switched regime. Advancement in Ho:YAG laser power is made possible through the improvements in output power of the Tm:YLF pump lasers. The slab geometry provides good thermal management characteristics which helps to overcome the limitations set by the thermally-induced stress fracture when scaling output power of Tm:YLF lasers. In conjunction with the use of novel holmium cavity designs that allow the use of slab pump lasers, high-power Ho:YAG lasers are realised. of 18.3 x 3.3. The slope efficiency was 61 % with respect to the thulium incident power, and the lasing wavelength was 2090 nm. Pulse energies as high as 14 mJ were achieved when Q-switched at 20 Hz, with a pulse duration of 17 ns. Further future improvements in output power and beam quality are also discussed.
So, S.
160ee139-f4ca-45a4-8ed9-a24c9d7b3f9b
So, S.
160ee139-f4ca-45a4-8ed9-a24c9d7b3f9b

So, S. (2007) Power scaling of Tm:YLF-pumped Ho:YAG lasers. University of Southampton, Optoelectronic Research Centre, Doctoral Thesis, 147pp.

Record type: Thesis (Doctoral)

Abstract

Reported in this thesis are methodologies for power-scaling Ho:YAG lasers for both the continuous-wave (CW) and Q-switched regime. Advancement in Ho:YAG laser power is made possible through the improvements in output power of the Tm:YLF pump lasers. The slab geometry provides good thermal management characteristics which helps to overcome the limitations set by the thermally-induced stress fracture when scaling output power of Tm:YLF lasers. In conjunction with the use of novel holmium cavity designs that allow the use of slab pump lasers, high-power Ho:YAG lasers are realised. of 18.3 x 3.3. The slope efficiency was 61 % with respect to the thulium incident power, and the lasing wavelength was 2090 nm. Pulse energies as high as 14 mJ were achieved when Q-switched at 20 Hz, with a pulse duration of 17 ns. Further future improvements in output power and beam quality are also discussed.

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Published date: 2007
Organisations: University of Southampton

Identifiers

Local EPrints ID: 50700
URI: http://eprints.soton.ac.uk/id/eprint/50700
PURE UUID: 6a148b63-1593-4784-8b65-51cdb748e3be

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Date deposited: 19 Mar 2008
Last modified: 13 Mar 2019 20:50

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