Output power enhancement of a self-frequency-doubled laser by selective excitation of inequivalent active centers in La2CaB10O19 (Nd:LCB) crystal.
Output power enhancement of a self-frequency-doubled laser by selective excitation of inequivalent active centers in La2CaB10O19 (Nd:LCB) crystal.
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DOI：
10.1364/ol.42.004861
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发表时间：
2017-12
期刊：
影响因子：
3.6
通讯作者：
Qiannan Fang;Haohai Yu;Huaijin Zhang;Guochun Zhang;Ji-yang Wang;Yicheng Wu
中科院分区：
文献类型：
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作者：
Qiannan Fang;Haohai Yu;Huaijin Zhang;Guochun Zhang;Ji-yang Wang;Yicheng Wu
研究了Nd ~（3+）掺杂硼酸钙镧La_2CaB_（10）O_（19）（Nd：LCB）晶体的非等效活性中心的选择性激发对自倍频激光器输出功率的增强作用。当Nd：LCB晶体中处于Ca 2+位置的Nd 3+离子被激发时，成功地实现了1066 nm的基频激光，并使自倍频波长远离Nd 3+离子在523 nm附近的自吸收峰。通过对关键参数的优化，在533 nm波长处实现了801 mW的最大倍频输出，与在La 3+位激发Nd 3+离子相比，输出功率提高了约7.8倍。到目前为止，自倍频激光的输出功率是Nd：LCB晶体中最高的，在533 nm处的有效发射在可见光范围内有着广阔的应用前景，如激光显示、光存储、激光打印等。同时，选择性激发非等效活性离子和增强自倍频激光的作用可能为多功能材料的研究提供一些启示。
We demonstrated the output power enhancement of a self-frequency-doubled laser with Nd3+-doped lanthanum calcium borate La2CaB10O19 (Nd:LCB) crystals by selective excitation of its inequivalent active centers. When the Nd3+ ions located in the Ca2+ sites were excited in the Nd:LCB crystal, the fundamental laser at the wavelength of 1066 nm was successfully realized, which can keep the self-frequency-doubled wavelength away from the self-absorption peak of Nd3+ ions at about 523 nm. By optimizing the key parameters, the maximum output power of 801 mW was achieved with the frequency-doubling at the wavelength of 533 nm, and the enhancement of output power was about 7.8 times compared with the results by excitation of Nd3+ ions in the La3+ sites. Up to now, this output power of the self-frequency-doubled laser represents the highest one in the Nd:LCB crystal, and the efficient emission at 533 nm should have promising applications in the visible range, such as laser displays, optical data storage, laser printing, etc. Meanwhile, the selective excitation of inequivalent active ions and the enhancement of the self-frequency-doubled laser may provide some inspiration for the investigation of multi-functional materials.