Thermal considerations in transverse geometries for high power copper vapour laser pumped Ti:sapphire lasers

W. J. Wadsworth*, D. W. Coutts, C. E. Webb

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution

Abstract

Developed were thermal and kinetic computer models of CVL pumped Ti:sapphire slab lasers in order to assist in the design of a new Ti:sapphire slab laser. A zigzag slab resonator design such as those used in many high power solid state laser systems allows a TEM0,0 mode to be matched to a large pumped volume. At pump powers in excess of 50 W the thermal gradients set up in the crystal create a significant astigmatic thermal lens, which can greatly complicate cavity designs incorporating the crystal. The thermal modeling has shown that the increased thermal conductivity of sapphire at cryogenic temperatures reduces the thermal relaxation time of the slab to less than the interpulse period. This yields a near flat thermal profile across the crystal at the time of lasing, with a correspondingly small thermal lens. The lens is further reduced by a six fold reduction in dn/dT from 300 K to 77 K.

Original languageEnglish
Title of host publicationProceedings of European Meeting on Lasers and Electro-Optics
Place of PublicationPiscataway, N.J.
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages58
Number of pages1
ISBN (Electronic)0780331702
ISBN (Print)0780331699
DOIs
Publication statusPublished - 1996
Externally publishedYes
EventProceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe - Hamburg, Ger
Duration: 8 Sep 199613 Sep 1996

Other

OtherProceedings of the 1996 Conference on Lasers and Electro-Optics Europe, CLEO/Europe
CityHamburg, Ger
Period8/09/9613/09/96

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Wadsworth, W. J., Coutts, D. W., & Webb, C. E. (1996). Thermal considerations in transverse geometries for high power copper vapour laser pumped Ti:sapphire lasers. In Proceedings of European Meeting on Lasers and Electro-Optics (pp. 58). Piscataway, N.J.: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/CLEOE.1996.562056