Abstract
Using a broadband femtosecond laser and a simple optical setup, we demonstrate narrow-bandwidth-tunable excitation of vibrational modes in and liquids. The resolution obtained is 80 times higher than the laser bandwidth. A pair of time-shifted, linearly chirped pulses is created by use of a high-order dispersion-compensated prism–interferometer setup. We use this pulse pair to selectively excite Raman-active transitions. Our setup represents a significant simplification with improved resolution, of previous approaches to the use of ultrashort pulses for chemically selective spectroscopy.
© 2003 Optical Society of America
Full Article | PDF ArticleMore Like This
Hideaki Kano and Hiro-o Hamaguchi
Opt. Lett. 28(23) 2360-2362 (2003)
V. P. Kalosha and J. Herrmann
Opt. Lett. 28(11) 950-952 (2003)
Michael Spanner and Misha Yu. Ivanov
Opt. Lett. 28(7) 576-578 (2003)