Highly efficient CW laser operation in 4 at. % Tm3+ and 4 at. % Y3+ codoped CaF2 crystals

Xinsheng Guo; Qinghui Wu; Linyang Guo; Fengkai Ma; Fei Tang; Cheng Zhang; Jie Liu; Bingchu Mei; Liangbi Su

doi:10.3788/COL201816.051401

Chinese Optics Letters, Volume. 16, Issue 5, 051401(2018)

Highly efficient CW laser operation in 4 at. % Tm³⁺ and 4 at. % Y³⁺ codoped CaF₂ crystals

Xinsheng Guo^1,2, Qinghui Wu², Linyang Guo³, Fengkai Ma², Fei Tang², Cheng Zhang⁴, Jie Liu⁴, Bingchu Mei^1、*, and Liangbi Su^2,5、**

Author Affiliations

¹State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430070, China

²Synthetic Single Crystal Research Center, Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China

³State Key Laboratory on High Power Semiconductor Lasers, Changchun University of Science and Technology, Changchun 130022, China

⁴Shandong Provincial Key Laboratory of Optics and Photonic Device, College of Physics and Electronics, Shandong Normal University, Jinan 250014, China

⁵State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China

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Figures & Tables(8)

Fig. 1. XRD patterns of the Tm:CaF2 and Tm,Y:CaF2 crystals.

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Fig. 2. Absorption spectra of Tm:CaF2 and Tm,Y:CaF2 crytals.

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Fig. 3. Emission spectra of the Tm:CaF2 and Tm,Y:CaF2 crystals.

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Fig. 4. Fluorescence decay curves at (a) 4 at. % Tm:CaF2 and (b) 4 at. % Tm,4 at. % Y:CaF2.

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Fig. 5. Gain cross-section at (a) 4 at. % Tm:CaF2 and (b) 4 at. % Tm,4 at. % Y:CaF2.

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Fig. 6. Schematic of the Tm,Y:CaF2 crystal laser.

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Fig. 7. Output powers versus absorbed pump power with output coupler transmissions of 2%, 5%, and 10%, respectively.

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Table 1. Emission Cross-section, Emission Lifetime, and Laser Parameters of Tm-doped Hosts

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Table 1. Emission Cross-section, Emission Lifetime, and Laser Parameters of Tm-doped Hosts

Hosts	Emission Cross-section ( ${cm}^{- 2}$ )	Emission Lifetime (ms)	$P_{out}$ (W)	$η$ (%)	References
Tm:YAG	$2.9 \times 10^{- 20}$	0.25	0.593	18.9	[27]
Tm:SSO	$6 \times 10^{- 21}$	1.1	0.934	25.9	[28,29]
$Tm : {CaYAlO}_{4}$	$2.5 \times 10^{- 21}$	2.68–2.9	0.24	28	[30,31]
Tm:YAP	$2.09 \times 10^{- 19}$	48.3	10.5	46	[32,33]
$Tm : {CaF}_{2}$	$3.2 \times 10^{- 21}$	2.99	–	–	This work
$Tm, Y : {CaF}_{2}$	$4.5 \times 10^{- 21}$	3.94	1.013	54.8	This work

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Xinsheng Guo, Qinghui Wu, Linyang Guo, Fengkai Ma, Fei Tang, Cheng Zhang, Jie Liu, Bingchu Mei, Liangbi Su. Highly efficient CW laser operation in 4 at. % Tm³⁺ and 4 at. % Y³⁺ codoped CaF₂ crystals[J]. Chinese Optics Letters, 2018, 16(5): 051401

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Paper Information

Category: Lasers and Laser Optics

Received: Feb. 9, 2018

Accepted: Mar. 1, 2018

Published Online: Dec. 6, 2018

The Author Email: Bingchu Mei (bcmei@whut.edu.cn), Liangbi Su (suliangbi@mail.sic.ac.cn)

DOI:10.3788/COL201816.051401

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology