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Tunable excitation source for coherent Raman spectroscopy based on a single fiber laser
Adany, Peter Arnett, David C. Johnson, Carey K. Hui, Rongqing
Adany, Peter
Arnett, David C.
Johnson, Carey K.
Hui, Rongqing
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Abstract
We demonstrate a wavelength tunable optical excitation source for coherent Raman scattering (CRS) spectroscopy based on a single femtosecondfiber laser. Electrically controlled wavelength tuning of Stokes optical pulses was achieved with soliton self frequency shift in an optical fiber, and linear frequency chirping was applied to both the pump and the Stokes waves to significantly improve the spectral resolution. The coherent anti-Stokes Raman scattering (CARS)spectrum of cyclohexane was measured and vibrational resonant Raman peaks separated by 70 cm−1 were clearly resolved. Single laser-based tunable excitation may greatly simplify CRS measurements and extend the practicality of CRS microscopy.
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This is the publisher's version, also available electronically from http://scitation.aip.org/content/aip/journal/apl/99/18/10.1063/1.3657529.
Date
2011-10-01
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American Institute of Physics
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Adany, Peter; Arnett, David C.; Johnson, Carey K.; Hui, Rongqing. (2011). "Tunable excitation source for coherent Raman spectroscopy based on a single fiber laser." Applied Physics Letters, 99:181112. http://dx.doi.org/10.1063/1.3657529