Sub-100 fs two-color pump-probe spectroscopy of Single Wall Carbon Nanotubes with a 100 MHz Er-fiber laser system

An extremely compact and versatile near-infrared two-color femtosecond pump-probe spectroscopy apparatus based on an amplified Erfiber laser system is presented and applied to the characterization of the relaxation dynamics of single-wall carbon nanotubes with fundamental absorption in the 2 μm spectral region. By implementing a fast-scan technique, dynamics as long as 3 ps are acquired in 5 s with a relative sensitivity of 10 and a temporal resolution below 100 fs at 2 μm. ©2008 Optical Society of America OCIS codes: (300.6340) Spectroscopy; (120.6200) Instrumentation, measurement, and metrology; (320.7150) Ultrafast optics; (140.4050) Laser and laser optics. References and links 1. S. Adachi, V. M. Kobryanskii, and T. Kobayashi, “Excitation of a Breather Mode of Bound Soliton Pairs in Trans-Polyacetylene by Sub-Five-Femtosecond Optical Pulses,” Phys. Rev. Lett. 89, 027401 (2002). 2. A. Weichert, C. Riehn, V. V. Matylitsky, W. Jarzęba, and B. 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