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Optimally shaped narrowband pulses for femtosecond stimulated Raman spectroscopy in the range 330-750 nm
Pontecorvo, E. Ferrante, C. Elles, Christopher G.
Pontecorvo, E.
Ferrante, C.
Elles, Christopher G.
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Abstract
Spectral compression of femtosecond pulses by second harmonic generation in the presence of substantial group velocity dispersion provides a convenient source of narrowband Raman pump pulses for femtosecond stimulated Raman spectroscopy (FSRS). We discuss here a simple and efficient modification that dramatically increases the versatility of the second harmonic spectral compression technique. Adding a spectral filter following second harmonic generation produces narrowband pulses with a superior temporal profile. This simple modification i) increases the Raman gain for a given pulse energy, ii) improves the spectral resolution, iii) suppresses coherent oscillations associated with slowly dephasing vibrations, and iv) extends the useful tunable range to at least 330-750 nm.
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This is the publisher's version, also available electronically from http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-6-6866.
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2013-03-25
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Optical Society of America
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Elles, Christopher G et al. (2013). Optimally shaped narrowband pulses for femtosecond stimulated Raman spectroscopy in the range 330-750 nm. Optics Express 21:6866. http://dx.doi.org/10.1364/OE.21.006866