CTH:YAG : from laser medium to luminescent concentrator - Groupe Lasers
Journal Articles Optics Express Year : 2024

CTH:YAG : from laser medium to luminescent concentrator

Abstract

This work presents what we believe is a new way to use a CTH:YAG crystal for spontaneous emission instead of laser emission. The spontaneous emission is collected in one main direction thanks to a luminescent concentrator configuration. The CTH:YAG is indirectly LED-pumped by a Ce:YAG delivering 3.5 ms pulses at 10 Hz with an energy of 2 J in the visible (550-650 nm). In a configuration optimized for light extraction, the CTH:YAG luminescent concentrator provides a broadband emission between 1.8 µm and 2.1 µm with a unique combination of power (1 W) and brightness (21.2 W/cm 2 /sr) that could be useful for short-wave infrared (SWIR) lighting applications.

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Optics / Photonic
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https://iogs.hal.science/hal-04723557

Submitted on : Monday, October 7, 2024-11:23:34 AM

Last modification on : Friday, October 11, 2024-3:12:53 AM

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Dates and versions

hal-04723557 , version 1 (07-10-2024)

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Lisa Lopez, Pierre Pichon, Frédéric Druon, Sophie Coumar, Clément Oriol, et al.. CTH:YAG : from laser medium to luminescent concentrator. Optics Express, 2024, 32 (8), pp.14321. ⟨10.1364/OE.515421⟩. ⟨hal-04723557⟩

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