Picosecond time-resolved spectroscopy of ultrafast & high energy pulsed laser
-
摘要: 介绍了一种利用光电摄谱法和条纹管相结合测量ps级时间分辨超快高能脉冲激光光谱的方法。论述了条纹相机工作原理和平面衍射光栅的分光原理，分析指出利用介绍的装置，可以实现波长300 nm ～1 600 nm、脉宽＞2 ps超快高能脉冲激光的光谱测量。采用1 054 nm超快高能脉冲激光器，实验得到了条纹像，对条纹像进行数据处理后得到测量光谱曲线，通过能量标定后，得到了超快高能脉冲激光器实际光谱曲线，验证了ps级时间分辨超快高能脉冲激光光谱方法。讨论了系统中耦合透镜组对光谱测量和光纤色散角对条纹图像的影响，论述了ps级时间分辨超快高能脉冲激光光谱的作用。随着条纹管制造技术的飞速发展，该方法可用于fs级激光光谱的测量。Abstract: The method for measuring the spectrum of ultrafast high energy pulsed laser in picosecond pulse width was presented with combination of photoelectrical spectrography and streak camera. The operating principle of streak camera and spectrophometric principle of plane diffraction grating were described respectively. Through thorough analysis, we pointed out that the spectral measurement of ultrafast high energy pulsed laser with wavelength in 300nm~1600nm and pulse width above 2 ps could be achieved by using our described facility. The streak image was obtained by utilizing ultrafast high energy pulsed laser in 1054nm wavelength, and the measured spectral curve was derived by processing the data of streak camera, then the actual spectral curve was also given by calibrating the related energy parameters, the method for measuring the spectrum of ultrafast high energy pulsed laser in picosecond pulse width was proved. The influence of coupling lens on measuring spectrum and grating fiber-s dispersion angle on streak image were analyzed finally, furthermore the role of spectrum for ultrafast high energy pulsed laser with picosecond pulse width was discussed. With the rapid development of the technology for manufacturing streak camera, the method will be used for measuring the spectral curve of laser with femtosecond pulse width.
-
Keywords:
- picosecond pulse /
- laser spectrum /
- streak tube /
- ultrafast pulse
-
-
［1］ZHAVORONKOV N , KORN G. Generation of intense supershort optical pulses using ultrafast molecular phase modulation ［C］.USA:Opt. Soc. America,2001.
［2］酆达, 李铮, 唐丹. 高速光脉冲的测量方法［J］.强激光与粒子束, 2003,15(9):863-868.
FENG Da, LI Zheng, TANG Dan. Measurnment metheds for high speed optic pulses［J］.High Power Laser and Particle Beams,2003 15(9):863-868.(in Chinese with an English abstract)
［3］曹东茂，魏志义，腾浩，等.整形种子脉冲克服放大过程中增益窄化效应的研究［J］. 物理学报，2000，49(06）：1202-1205.
CAO Dong-mao,WEI Zhi-yi,TENG Hao,et al. Control the gain-narrowing in femtosecond Ti∶sapphire amplifier by shaping oscillator pulse［J］.Acta Physica Sinica, 2000, 49(06):1202-1205. (in Chinese with an English abstract)
［4］谢旭东,王逍,朱启华,等. 光谱分辨条纹相机测量高能啁啾脉冲特性［J］. 物理学报,2007, 56(11): 6463-6467.
XIE Xu-dong,WANG Xiao,ZHU Qi-hua,et al. High energy chirped pulse characteristics obersved by spectral-resolved streak camera［J］. Acta Physica Sinica, 2007, 56(11): 6463-6467.(in Chinese with an English abstract)
［5］Hamamatsu Photonics.Femtosecond streak camera c6138［R］.Japan:Hamamatsu Photonics,2010.
［6］李全臣，蒋月娟.光谱仪器原理［M］.北京：北京理工大学出版社，1999.
LI Quan-cheng,JIANG Yue-juan. Spectrometers principle［M］.Beijing:Publishing Company of Beijing of Science and Technology,1999.(in Chinese)
［7］吴宝宁,刘建平,宋一兵,等.瞬态光谱量子分析及其测量［J］. 光学学报,2001,21(7):825-828.
WU Bao-ning,LIU Jian-ping,SONG Yi-Bing,et al. Quantum analysis and measurement for transient spectrum［J］. Acta Optica Sinica, 2001,21(7):825-828.(in Chinese with an English abstract)
［8］吴宝宁,刘建平,候西旗,等.200 nm～1100 nm瞬态光谱测定仪的研究［J］. 应用光学,1998,19(6):20-23.
WU Bao-ning,LIU Jian-ping, HOU Xi-qi,et al. Research of trancient spectral measuring instrument. Journal of Applied Optics, 1998 ,19(6):20-23. (in Chinese with an English abstract)
计量
- 文章访问数: 3191
- HTML全文浏览量: 144
- PDF下载量: 716
下载:
陕公网安备 61011302001501号 