Fiber Supercontinuum Source for Broadband-CARS Microspectroscopy Based on a Dissipative Soliton Laser
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 ar...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2017-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/7944638/ |
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| Summary: | 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<sup>–1</sup> spectral range simultaneously with resolution less than 10 cm<sup>–1</sup>, 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<sup>–1</sup>, respectively. |
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| ISSN: | 1943-0655 |