Six-watt diode-pumped Tm:GdVO<sub>4</sub> laser at 2.29&#x2005;&#x00B5;m

Xiaoxu Yu; Kirill Eremeev; Zhongben Pan; Pavel Loiko; Hongwei Chu; Han Pan; Shengzhi Zhao; Alain Braud; Patrice Camy; Dechun Li; Dechun Li

doi:10.1364/OL.505131

Optics Letters
Vol. 48,
Issue 24,
pp. 6404-6407
(2023)
•https://doi.org/10.1364/OL.505131

Six-watt diode-pumped Tm:GdVO₄ laser at 2.29 µm

Xiaoxu Yu, Kirill Eremeev, Zhongben Pan, Pavel Loiko, Hongwei Chu, Han Pan, Shengzhi Zhao, Alain Braud, Patrice Camy, and Dechun Li

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Xiaoxu Yu, Kirill Eremeev, Zhongben Pan, Pavel Loiko, Hongwei Chu, Han Pan, Shengzhi Zhao, Alain Braud, Patrice Camy, and Dechun Li, "Six-watt diode-pumped Tm:GdVO₄ laser at 2.29 µm," Opt. Lett. 48, 6404-6407 (2023)

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Abstract

A compact Tm:GdVO₄ laser pumped by a 794 nm laser diode generated 6.09 W at 2.29 µm (³H₄ → ³H₅ Tm³⁺ transition) with a high slope efficiency of 30.8% and linear laser polarization (π). The polarized spectroscopic properties of Tm³⁺ in GdVO₄ were also revised. The peak stimulated-emission cross section of Tm³⁺ is 2.97 × 10⁻²⁰ cm² at 2280 nm, corresponding to an emission bandwidth of 42 nm for π-polarized light.

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Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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Crystal	C_Tm at.%	P_th W	P_out W	Η %	λ_L µm	Ref.
Tm:LiYF₄	3.5	0.72	2.11	26.9	2.30	[13]
Tm:Y₃Al₅O₁₂	3.2	1.67	1.11	9.10	2.19, 2.32	[13]
Tm:Y₃Al₅O₁₂	3.5	2.72	1.49	10.1	2.33	[21]
Tm:YAlO₃	1.8	4.53	2.69	33.1	2.27	[13]
Tm:YAlO₃	2	∼5	0.74	8.30	2.45	[9]
Tm:YVO₄	1.5	2.99	1.89	13.6	2.29, 2.36	[19]
	1.5	6.25	1.15	7.90	2.29, 2.36	[22]
	1.5	7.78	5.41	22.3	2.29	^b
Tm:GdVO₄	1.5	4.80	6.09	30.8	2.29	^b

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Optics Letters