Second-harmonic generation using an a axis Nd:MgO:LiNbO3 single crystal fiber with Mg-ion indiffused cladding

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

doi:10.1117/1.1290684

1 October 2000 Second-harmonic generation using an a axis Nd:MgO:LiNbO3 single crystal fiber with Mg-ion indiffused cladding

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

Author Affiliations +

Optical Engineering, Vol. 39, Issue 10, (October 2000). https://doi.org/10.1117/1.1290684

We report the implementation of a low-loss core-cladding waveguide structure of an a axis Nd:MgO:LiNbO3 single-crystal fiber with a step refractive index profile 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, with an elliptical crosssectional area of 200x 150?m, is further shown with a Mg ion indiffusion process. Electron probe microanalysis is used to measure the Mg ion concentration distribution in the Mg-diffused layer. After several trials, diffusion parameters suitable for achieving a core-cladding waveguide structure with a step refractive index profile are obtained. The optical and structural properties of the cladded crystal fibers are also characterized. Room-temperature second-harmonic generation with such a cladded crystal fiber is demonstrated. At room temperature, cw green laser output with a power of 10 ?W at the wavelength of 0.532 ?m is achieved. The origin of the relatively low conversion efficiency is discussed.

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Wenxiu Que, Yan Zhou, Yee Loy Lam, Yuen Chuen Chan, Chan Hin Kam, Yujing Huo, and Xi Yao "Second-harmonic generation using an a axis Nd:MgO:LiNbO3 single crystal fiber with Mg-ion indiffused cladding," Optical Engineering 39(10), (1 October 2000). https://doi.org/10.1117/1.1290684

Published: 1 October 2000

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