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Proceedings Paper

LED-pumped Alexandrite laser oscillator and amplifier
Author(s): Pierre Pichon; Jean-Philippe Blanchot; François Balembois; Frédéric Druon; Patrick Georges
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Paper Abstract

In this paper, we report the first LED-pumped transition-metal-doped laser oscillator and amplifier based on an alexandrite crystal (Cr3+:BeAl2O4). A Ce:YAG luminescent concentrator illuminated by blue LEDs is used to reach higher pump powers than with LEDs alone. The luminescent 200-mm-long-composit luminescent concentrator involving 2240 LEDs can delivers up to 268 mJ for a peak irradiance of 8.5 kW/cm2. In oscillator configuration, an LED-pumped alexandrite laser delivering an energy of 2.9 mJ at 748 nm in free running operation is demonstrated. In the cavity, we measured a double pass small signal gain of 1.28, in good agreement with numerical simulations. As amplifier, the system demonstrated to boost a CW Ti:sapphire laser by a factor of 4 at 750 nm in 8 passes with a large tuning range from 710 nm to 800 nm.

Paper Details

Date Published: 15 February 2018
PDF: 11 pages
Proc. SPIE 10511, Solid State Lasers XXVII: Technology and Devices, 105111J (15 February 2018); doi: 10.1117/12.2287808
Show Author Affiliations
Pierre Pichon, Lab. Charles Fabry, Institut d'Optique, CNRS, Univ. Paris Saclay (France)
Effilux (France)
Jean-Philippe Blanchot, Effilux (France)
François Balembois, Effilux (France)
Frédéric Druon, Lab. Charles Fabry, Institut d'Optique, CNRS, Univ. Paris Saclay (France)
Patrick Georges, Lab. Charles Fabry, Institut d'Optique, CNRS, Univ. Paris Saclay (France)


Published in SPIE Proceedings Vol. 10511:
Solid State Lasers XXVII: Technology and Devices
W. Andrew Clarkson; Ramesh K. Shori, Editor(s)

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