Compact multipass alexandrite amplifier pumped by 2850 LEDs, on the road to 100 Hz operation - Institut d'Optique Graduate School
Communication Dans Un Congrès Année : 2023

Compact multipass alexandrite amplifier pumped by 2850 LEDs, on the road to 100 Hz operation

Résumé

Alexandrite (Cr 3+ :BeAl 2 O 3 ) is a well-known laser material used in dermatology [1], and for LiDAR applications [2]. It is usually pumped by flashlamp [3], red laser diodes [2] and more recently by LED-pumped luminescent concentrators (LC) [4]. Alexandrite is generally used in laser oscillators but rarely in amplifiers because of its low emission cross section. Whereas a small signal gain of several units can be reached under flashlamp pumping, much lower values have been reported under semiconductor pumping [2], [4]. Multipass amplification is then necessary to reach a significant gain. A gain of 2 in a four passes configuration has been previously reported [2] and a gain of 4 for an eight-passes one [4]. In this work we report a significant gain enhancement by the increase of two parameters: the pump power which provides up to 2.5 kW, and the number of passes that can reach 28
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Dates et versions

hal-04247583 , version 1 (18-10-2023)

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Citer

Elio Thellier, Hussein Taleb, Catherine Leblanc, Pierre Pichon, Frédéric Druon, et al.. Compact multipass alexandrite amplifier pumped by 2850 LEDs, on the road to 100 Hz operation. 2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC), Jun 2023, Munich, Germany. ⟨10.1109/CLEO/Europe-EQEC57999.2023.10232843⟩. ⟨hal-04247583⟩
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