Temperature-dependent fluorescence and site-selective excitation studies of ytterbium doped silica

Brian Topper; Alexander Neumann; Stefan Kuhn; Denny Häßner; Sigrun Hein; Christian Hupel; Johannes Nold; Nicoletta Haarlammert; Arash Mafi; Thomas Schreiber

doi:10.1117/12.3000259

12 March 2024 Temperature-dependent fluorescence and site-selective excitation studies of ytterbium doped silica

Brian Topper, Alexander Neumann, Stefan Kuhn, Denny Häßner, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Arash Mafi, Thomas Schreiber

Author Affiliations +

Proceedings Volume 12865, Fiber Lasers XXI: Technology and Systems; 128650F (2024) https://doi.org/10.1117/12.3000259
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

This contribution presents temperature-dependent and site-selective spectroscopy measurements of Yb, Al, F co-doped silica. White light absorption and fluorescence measurements using a multimode 915 nm diode for excitation were both made over the range 77 K to 420 K. Low temperature measurements allow determination of the Stark levels. The high temperature measurements allow quantification of how the laser cross-sections vary with temperature over intervals applicable to high power laser operation. Between room temperature and 420 K, the cross-sections for some spectral regions change by more than 10%, whereas other regions are essentially unchanged over the same temperature range.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Brian Topper, Alexander Neumann, Stefan Kuhn, Denny Häßner, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Arash Mafi, and Thomas Schreiber "Temperature-dependent fluorescence and site-selective excitation studies of ytterbium doped silica", Proc. SPIE 12865, Fiber Lasers XXI: Technology and Systems, 128650F (12 March 2024); https://doi.org/10.1117/12.3000259

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