Efficient multi-wavelength lasers made of Nd:GdLuAG crystal

Yongguang Zhao; Zhengping Wang; Haohai Yu; Xiaodong Xu; Jun Xu; Xinguang Xu

doi:10.3788/COL201513.021404

Journals >Chinese Optics Letters >Volume 13 >Issue 2 >Page 021404 > Article

Chinese Optics Letters
Vol. 13, Issue 2, 021404 (2015)

Efficient multi-wavelength lasers made of Nd:GdLuAG crystal

Yongguang Zhao¹, Zhengping Wang^2、*, Haohai Yu², Xiaodong Xu³, Jun Xu³, and Xinguang Xu²

Author Affiliations

¹Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronic Engineering, Jiangsu Normal University, Xuzhou 221116, China

²State Key Laboratory of Crystal Materials and Institute of Crystal Materials, Shandong University, Jinan 250100, China

³Key Laboratory of Transparent and Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China

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DOI: 10.3788/COL201513.021404 Cite this Article Set citation alerts

Yongguang Zhao, Zhengping Wang, Haohai Yu, Xiaodong Xu, Jun Xu, Xinguang Xu. Efficient multi-wavelength lasers made of Nd:GdLuAG crystal[J]. Chinese Optics Letters, 2015, 13(2): 021404 Copy Citation Text

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Abstract

Owing to the small differences between the cross-sections of the four emission peaks around 1.3 μm, an efficient four-wavelength synchronous launched laser is demonstrated using a Nd:GdLuAG crystal. The laser has no special resonator design. The maximum output power is 4.28 W, which corresponds to a conversion efficiency of 45.6%. For the

Q

-switching, the laser operated in dual-wavelength mode, and the single pulse energy is maintained at

～ 80 μJ

. By calculating the population inversion density, multi-wavelength emission characteristics in both continuous wave and

Q

-switching lasers are discussed.

σ_{e} (λ) = \frac{λ^{4} I (λ)}{8 π c n^{2} τ_{r} \int I (λ) d λ},

(1)

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P_{t h, i} = \frac{\ln (\frac{1}{R_{i}}) + L_{i}}{2 η_{i}} \frac{h ν_{p}}{σ_{i} τ_{i}} (ω_{l, i}^{2} + ω_{p}^{2}), i = 1,2, 3,4,

(2)

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n_{i i} = \frac{\ln (\frac{1}{1 - T_{i}}) + \ln (\frac{1}{T_{0}^{2}}) + L_{i}}{2 σ_{i} l} .

(3)

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n_{r i} = \frac{\ln (\frac{1}{1 - T_{i}}) + \ln (\frac{1}{T_{s}^{2}}) + L_{i}}{2 σ_{i} l},

(4)

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Yongguang Zhao, Zhengping Wang, Haohai Yu, Xiaodong Xu, Jun Xu, Xinguang Xu. Efficient multi-wavelength lasers made of Nd:GdLuAG crystal[J]. Chinese Optics Letters, 2015, 13(2): 021404

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