Fiber Supercontinuum Source for Broadband-CARS Microspectroscopy Based on a Dissipative Soliton Laser

IEEE Photonics Journal

Lingjie Kong¹  Xiaosheng Xiao¹  Changxi Yang¹  Yan Li¹ 

[1] State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing, China;

关键词: Fiber lasers;    non-linear microscopy;    supercontinuum generation;    Raman spectroscopy;   

DOI  :  10.1109/JPHOT.2017.2712648

来源: DOAJ

【 摘 要 】

We propose and demonstrate a supercontinuum fiber laser source for broadband coherent anti-Stokes Raman scattering (BCARS) microspectroscopy, seeded by a Yb-doped dissipative soliton fiber laser. Smooth continuum Stokes pulses ranging from 1050 to 1312 nm at -20 dB bandwidth are generated in a highly nonlinear fiber from the compact fiber seed, and the corresponding pump pulses are obtained after a narrowband filter centered at 1036 nm. With this fiber laser source, we are able to obtain BCARS spectra in 700-1900 cm^-1 spectral range simultaneously with resolution less than 10 cm^-1, and show its application in analyzing complex mixture. We also demonstrate the capability of our system in chemical imaging by simultaneously obtaining two two-dimensional CARS images of retinoic acid crystal at Raman shifts of ~1574 and ~1162 cm^-1, respectively.

【 授权许可】

Unknown