Cladded optical fiber laser made from a-axis Nd:MgO:LiNbO3 single-crystal fiber with Mg-ion indiffussion

Wenxiu Que; Yan Zhou; Yee Loy Lam; Yuen Chuen Chan; Chan Hin Kam; Yujing Huo; Liangying Zhang; Xi Yao

doi:10.1117/12.363944

20 September 1999 Cladded optical fiber laser made from a-axis Nd:MgO:LiNbO3 single-crystal fiber with Mg-ion indiffussion

Wenxiu Que, Yan Zhou, Yee Loy Lam, Yuen Chuen Chan, Chan Hin Kam, Yujing Huo, Liangying Zhang, Xi Yao

Author Affiliations +

Proceedings Volume 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V; (1999) https://doi.org/10.1117/12.363944
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

We report the implementation of a low loss core-cladding waveguide structure of an a-axis Nd:MgO:LiNbO₃ single crystal fiber and the demonstration of a frequency-doubled laser made from such a cladded crystal fiber. The laser-heated pedestal grown a-axis single crystal fiber, which has an elliptical cross sectional area of about 200 micrometer X 150 micrometer, was further treated with a Mg-ion indiffusion process. An electron probe microanalysis was used to measure the Mg-ion concentration distribution of the Mg diffused layer. After a number of trials, the diffusion parameters suitable for forming a core-cladding waveguide structure have been obtained. The optical and structural properties of the cladded crystal fibers were also characterized. A diode pumped external cavity frequency doubled laser has been made from the cladded crystal fiber. At room temperature, CW green laser output with a power of 10 (mu) W at the wavelength of 0.532 micrometer has been obtained. The origins of the relatively low frequency-doubled conversion efficiency will also be discussed.

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Wenxiu Que, Yan Zhou, Yee Loy Lam, Yuen Chuen Chan, Chan Hin Kam, Yujing Huo, Liangying Zhang, and Xi Yao "Cladded optical fiber laser made from a-axis Nd:MgO:LiNbO3 single-crystal fiber with Mg-ion indiffussion", Proc. SPIE 3801, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications V, (20 September 1999); https://doi.org/10.1117/12.363944

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KEYWORDS

Crystals

Laser crystals

Fiber lasers

Magnesium

Structured optical fibers

Diffusion

Photography

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