Mid-infrared self-Q-switched Er, Pr:CaF<sub>2</sub> diode-pumped laser

Jingjing Liu; Xiuwei Fan; Jie Liu; Weiwei Ma; Jingya Wang; Liangbi Su

doi:10.1364/OL.41.004660

Optics Letters
Vol. 41,
Issue 20,
pp. 4660-4663
(2016)
•https://doi.org/10.1364/OL.41.004660

Mid-infrared self-Q-switched Er, Pr:CaF₂ diode-pumped laser

Jingjing Liu, Xiuwei Fan, Jie Liu, Weiwei Ma, Jingya Wang, and Liangbi Su

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Jingjing Liu, Xiuwei Fan, Jie Liu, Weiwei Ma, Jingya Wang, and Liangbi Su, "Mid-infrared self-Q-switched Er, Pr:CaF₂ diode-pumped laser," Opt. Lett. 41, 4660-4663 (2016)

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Abstract

A diode-end-pumped self- $Q$ -switched mid-infrared laser was demonstrated with ${Er}^{3 +}$ , $\Pr^{3 +}$ co-doped ${CaF}_{2}$ crystal for, to the best of our knowledge, the first time. Maximum average output power of 262 mW was achieved and the corresponding slope efficiency was 14.9%. Stable self- $Q$ -switched laser pulses as short as 718 ns were obtained with a repetition rate of 52.63 kHz at the center wavelength of 2803.7 nm. This highly compact nanosecond laser using a 3 at. % ${Er}^{3 +}$ and 0.03 at. % $\Pr^{3 +}$ co-doped ${CaF}_{2}$ crystal is free from any active or passive modulators in cavity, potentially promising for a micro and integrated diode-pumped mid-infrared laser system.

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OC	Repetition Rate (kHz)	Pulse Duration(ns)	Single-Pulse Energy(μJ)	Peak Power(W)
$T = 1 %$	50.01	699.3	3.88	5.55
$T = 3 %$	52.63	718	4.98	6.93

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