Self-phase modulation enabled, wavelength-tunable ultrafast fiber laser   sources: an energy scalable approach

doi:10.1364/OE.24.015328

CORC > 北京大学 > 信息科学技术学院

	Self-phase modulation enabled, wavelength-tunable ultrafast fiber laser sources: an energy scalable approach
	Liu, Wei ; Li, Chen ; Zhang, Zhigang ; Kaertner, Franz X. ; Chang, Guoqing
刊名	OPTICS EXPRESS
	2016
关键词	PHOTONIC CRYSTAL FIBERS SUPERCONTINUUM GENERATION CONTINUUM GENERATION FEMTOSECOND PULSES 3 GHZ DISPERSION COHERENT MICROSCOPY NM EXCITATION
DOI	10.1364/OE.24.015328
英文摘要	We propose and demonstrate a new approach to implement a wavelength-tunable ultrafast fiber laser source suitable for multiphoton microscopy. We employ fiber-optic nonlinearities to broaden a narrowband optical spectrum generated by an Yb-fiber laser system and then use optical bandpass filters to select the leftmost or rightmost spectral lobes from the broadened spectrum. Detailed numerical modeling shows that self-phase modulation dominates the spectral broadening, self-steepening tends to blue shift the broadened spectrum, and stimulated Raman scattering is minimal. We also find that optical wave breaking caused by fiber dispersion slows down the shift of the leftmost/rightmost spectral lobes and therefore limits the wavelength tuning range of the filtered spectra. We show both numerically and experimentally that shortening the fiber used for spectral broadening while increasing the input pulse energy can overcome this dispersion-induced limitation; as a result, the filtered spectral lobes have higher power, constituting a powerful and practical approach for energy scaling the resulting femtosecond sources. We use two commercially available photonic crystal fibers to verify the simulation results. More specific, use of 20-mm fiber NL-1050-ZERO-2 enables us to implement an Yb-fiber laser based ultrafast source, delivering femtosecond (70-120 fs) pulses tunable from 825 nm to 1210 nm with > 1 nJ pulse energy. (C) 2016 Optical Society of America; Helmholtz Association through the Helmholtz Young Investigator Group grant [VH-NG-804]; Helmholtz-CAS Joint Research Group grant [HCJRG 201]; SCI(E); EI; ARTICLE; guoqing.chang@desy.de; 14; 15328-15340; 24
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/491907]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Liu, Wei,Li, Chen,Zhang, Zhigang,et al. Self-phase modulation enabled, wavelength-tunable ultrafast fiber laser sources: an energy scalable approach[J]. OPTICS EXPRESS,2016.
APA	Liu, Wei,Li, Chen,Zhang, Zhigang,Kaertner, Franz X.,&Chang, Guoqing.(2016).Self-phase modulation enabled, wavelength-tunable ultrafast fiber laser sources: an energy scalable approach.OPTICS EXPRESS.
MLA	Liu, Wei,et al."Self-phase modulation enabled, wavelength-tunable ultrafast fiber laser sources: an energy scalable approach".OPTICS EXPRESS (2016).