被动锁模掺Er3+氟化物光纤激光器理论研究 |
| |
引用本文: | 王少奇,邓颖,李超,王方,张永亮,康民强,薛海涛,罗韵,粟敬钦,胡东霞,郑奎兴,朱启华.被动锁模掺Er3+氟化物光纤激光器理论研究[J].红外与激光工程,2016,45(11):1136004-1136004(6). |
| |
作者姓名: | 王少奇 邓颖 李超 王方 张永亮 康民强 薛海涛 罗韵 粟敬钦 胡东霞 郑奎兴 朱启华 |
| |
作者单位: | 1.中国工程物理研究院激光聚变研究中心,四川 绵阳 621900; |
| |
摘 要: | 根据非线性薛定谔方程建立了基于可饱和吸收体被动锁模掺Er3+氟化物光纤激光器的理论模型,研究了中红外超短脉冲在掺Er3+氟化物光纤激光器中形成的物理机制,数值模拟了被动锁模掺Er3+氟化物光纤激光器中中红外超短脉冲的演化过程,重点分析了掺Er3+增益光纤长度,可饱和吸收体不饱和损耗对被动锁模掺Er3+氟化物光纤激光器产生中红外超短脉冲的影响,并给出了参数设置范围。研究发现:当小信号增益系数、可饱和吸收体不饱和损耗、腔内净色散量为一定值,掺Er3+氟化物光纤长度在一定范围时,才会出现稳定的锁模脉冲,且随着掺Er3+氟化物光纤长度增加脉冲宽度变窄、光谱变宽、峰值功率增高;当掺Er3+氟化物光纤长度、腔内净色散量、小信号增益系数为一定值时,可饱和吸收体不饱和损耗在一定的范围时可以得到稳定的锁模脉冲,且随着可饱和吸收体不饱和损耗的增加脉冲宽度变窄,光谱先变宽后变窄变化范围不大,峰值功率增加。
|
关 键 词: | 光纤激光器 超短脉冲 中红外 氟化物光纤 |
收稿时间: | 2016-03-10 |
Theory study on passively mod-locked Er3+-doped fluorine fiber laser |
| |
Affiliation: | 1.Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,China;2.Science and Technology on Plasma Physics Laboratory,Mianyang 621900,China;3.Collaborative Innovation Center of IFSA(CICIFSA),Shanghai Jiao Tong University,Shanghai 200240,China;4.Graduate School of China Academy of Engineering Physics,Beijing 100088,China |
| |
Abstract: | Based on the Nonlinear Schdinger Equation(NLSE), the theoretical model of psssively mod-locked Er3+-doped fluorid fiber laser using a saturable absorber was set up, by which the mechanism of generating mi-infrared ultrashort pulse in the fiber laser was investigated. The numerical simulation focused on the evolution process of the mi-infrared ultrashort pulse in fluorine fiber laser. The impact of the Er3+:fluorine gain fiber length and the saturable absorber unsaturated loss on the generation of mod-locked pulse was analyzed in detail, and the reasonable parameter range was determined. It is found that for a given set of smal-signal gain, unsaturated loss, and net intracavity dispersion, the stable mod-locked pulses are achieved by tuning the Er3+:fluorine gain fiber length within a certain range. With increasing the Er3+:fluorine gain fiber length, the output pulse duration decreased gradually, while the increase of the spectrum width (FWHM) and the peak power are observed. Meanwhile, for a given set of Er3+:fluorine gain fiber length, net intracavity dispersion and smal-signal gain, the stable mod-locked pulses are also obtained by adjusting the saturable absorber unsaturated loss within a certain range. With the increase of the saturable absorber unsaturated loss, the output pulse duration decreases gradually, however spectral width broadens and then narrows, and peak power increases gradually. |
| |
Keywords: | |
|
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|