Wavelength and polarisation dependence of pump-induced loss in Ti:sapphire

Simpson, Niall and Lee, Martin and Kemp, Alan J. (2024) Wavelength and polarisation dependence of pump-induced loss in Ti:sapphire. Optical Materials Express, 14 (5). pp. 1370-1389. ISSN 2159-3930 (https://doi.org/10.1364/OME.511506)

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Abstract

We use pump beam wavelength and polarisation to demonstrate that the phenomenon of pump-induced loss in Ti:sapphire is linked to simultaneous excitation of two separate absorption bands: the Ti3+ pump band and the parasitic 400 nm residual absorption. We find that the degree of pump-induced loss is linked to the relative absorption strengths of the residual absorption band and the Ti3+ pump band at the wavelength(s) of excitation.

ORCID iDs

Simpson, Niall ORCID logoORCID: https://orcid.org/0000-0003-3139-472X, Lee, Martin and Kemp, Alan J. ORCID logoORCID: https://orcid.org/0000-0002-1076-3138;
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