| 基于光子晶体光纤放大系统的皮秒方波产生 |
| |
| 引用本文： | 刘佳,王思佳,顾澄琳,刘博文,庞冬青,胡明列,王清月.基于光子晶体光纤放大系统的皮秒方波产生[J].红外与激光工程,2012,41(8):2023-2026. |
| |
| 作者姓名： | 刘佳 王思佳 顾澄琳 刘博文 庞冬青 胡明列 王清月 |
| |
| 作者单位： | 1.天津大学 精密仪器与光电子工程学院 光电信息技术教育部重点实验室,天津 300072 |
| |
| 基金项目： | 自然科学基金(61008015,60838004,60778010);教育部高等学校博士学科点专项科研基金(20100032120057) |
| |
| 摘 要： | 在光子晶体光纤飞秒激光放大系统中，利用液晶空间光调制器的调制特性，实现了对超短激光脉冲实时、可控的脉冲振幅整形，分析了大线性啁啾方波脉冲在放大过程中的频域和时域形状随泵浦功率的变化规律，在此基础上，通过液晶空间光调制器对主放大器前的脉冲频谱形状进行了预先调整，放大后获得了中心波长为1 031 nm，光谱宽度为13 nm，脉宽为15 ps的方波脉冲，证实了采用光谱优化后的飞秒脉冲作种子，可以较好地克服光子晶体光纤放大器增益不均引起的频谱形状的变化。
|
| 关 键 词： | 振幅调制 PCF放大 脉冲整形 方波脉冲 |
Generating square picosecond pulse with photonic crystal fiber amplification system |
| |
| Wang Jia
,
Wang Sijia
,
Gu Chenglin
,
Liu Bowen
,
Pang Dongqing
,
Hu Minglie
,
Wang Qingyue.Generating square picosecond pulse with photonic crystal fiber amplification system[J].Infrared and Laser Engineering,2012,41(8):2023-2026. |
| |
| Authors: | Wang Jia Wang Sijia Gu Chenglin Liu Bowen Pang Dongqing Hu Minglie Wang Qingyue |
| |
| Affiliation: | 1.The Key Laboratory of Optoelectronic Information Technological Science,College of Precision Instrument and Optoelectronics Engineering,Tianjin University,Tianjin 300072,China |
| |
| Abstract: | The modulation characteristics of the liquid space light modulator was discussed,and its application in the large mode area photonic crystal fiber ultrafast laser amplification system was studied.The results indicated the real time control on pulse shape was realized.The influence of pump power on the spectral and temporal shape of strongly linearly chirped square pulse after amplification was discussed.By using a spectral pulse pre-shaping of the seed pulse before the power amplifier,the square pulse with 15-ps pulse duration,13-nm bandwidth at 1 031-nm central wavelength was obtained.The results also demonstrate the significant role of liquid space light modulator in compensating pulse distortions induced by the asymmetric gain,by a pre-optimization of the seed pulse spectrum before amplification. |
| |
| Keywords: | amplitude modulation PCF amplification pulse shaping square pulses |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 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 |
|
