Graphene Q-switched Er,Yb:GdAl3(BO3)4 laser at 1550&#x2009;&#x2009;nm

Konstantin Gorbachenya; Viktor Kisel; Anatoly Yasukevich; Pavel Loiko; Xavier Mateos; Viktor Maltsev; Nikolai Leonyuk; Magdalena Aguiló; Francesc Díaz; Uwe Griebner; Valentin Petrov; Nikolai Kuleshov

doi:10.1364/AO.56.004745

Graphene Q-switched Er,Yb:GdAl₃(BO₃)₄ laser at 1550 nm

Konstantin Gorbachenya, Viktor Kisel, Anatoly Yasukevich, Pavel Loiko, Xavier Mateos, Viktor Maltsev, Nikolai Leonyuk, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov, and Nikolai Kuleshov

Applied Optics
Vol. 56,
Issue 16,
pp. 4745-4749
(2017)
•https://doi.org/10.1364/AO.56.004745

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Konstantin Gorbachenya, Viktor Kisel, Anatoly Yasukevich, Pavel Loiko, Xavier Mateos, Viktor Maltsev, Nikolai Leonyuk, Magdalena Aguiló, Francesc Díaz, Uwe Griebner, Valentin Petrov, and Nikolai Kuleshov, "Graphene Q-switched Er,Yb:GdAl₃(BO₃)₄ laser at 1550 nm," Appl. Opt. 56, 4745-4749 (2017)

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Table of Contents Category
- Lasers and Laser Optics
Optics & Photonics Topics
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The topics in this list come from the OSA Optics and Photonics Topics applied to this article.
Previously assigned OCIS codes
- Infrared and far-infrared lasers (140.3070)
- Laser materials (140.3380)
- Lasers, Q-switched (140.3540)

About this Article
History
- Original Manuscript: March 31, 2017
- Manuscript Accepted: May 5, 2017
- Published: May 30, 2017

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Abstract

A single-layer graphene saturable absorber is employed for passive $Q$ -switching of an Er, $Yb : {GdAl}_{3} {({BO}_{3})}_{4}$ (Er,Yb:GdAB) compact laser, representing the first Er-doped oxoborate laser $Q$ -switched by graphene. This laser is based on a $c$ -cut 1.8 at. % ${Er}^{3 +}$ , 15 at. % ${Yb}^{3 +} : GdAB$ crystal diode-pumped at 0.976 μm. It generates a maximum average output power of 360 mW at 1.55 μm with a slope efficiency of 23% (with respect to the incident power). Stable $\sim 1 μJ / 130 ns$ pulses are achieved at a repetition rate of 400 kHz. This result represents, to the best of our knowledge, the shortest pulse duration ever achieved in bulk Er lasers $Q$ -switched by 2D materials. Graphene is a promising material for generating nanosecond pulses at high repetition rates (MHz range) in Er-doped oxoborate lasers emitting in the eye-safe range at 1.5–1.7 μm.

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Laser Material	$P_{out}$ , mW	$λ_{L}$ , nm	$E_{out}$ , μJ	$Δ τ$ , ns	PRF, kHz	Ref.
Er,Yb:GdAB	360	1550	0.9	130	400	This work
Er:YAG ceramic	528	1645	7.1	1490	75	[16]
Er:YAG	480	1645	13.5	7780	36	[17]
Er:YAG ceramic	662	1617	12.2	1900	54	[18]
Er:LuYAG	460	1648	5.8	2050	79	[25]

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