Nonlinear transmission of single-wall carbon nanotubes in heavy water at a wavelength of 1.54 μm and self-mode locking in a Er³⁺: glass laser obtained using a passive nanotube switch

The nonlinear transmission of light by single-wall carbon nanotube suspensions in D2O at a wavelength of 1.54 μm is studied. For the 250-ns probe pulse and the 40-MW cm-2 maximum intensity of radiation incident on a cell, the decrease in the absorption coefficient was 3.6 cm-1 while the absorption coefficient in a weak field was 17 cm-1. Q-switching and self-mode locking were obtained in a pulsed Er3+ : glass laser by using a cell with the nanotube suspension as a passive filter.

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