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Library Item

Enhanced Properties in Single-Walled Carbon Nanotubes Based Saturable Absorber for All Optical Signal Regeneration

Link:
Author(s):
Hanond Nong, Maud Gicquel-Guézo, Laurent Bramerie, Mathieu Perrin, Frédéric Grillot, Romain Fleurier, Baolai Liang, Diana L. Huffaker, Christophe Levallois, Julie Le Pouliquen, Alain Le Corre, Olivier Dehaese, and Slimane Loualiche
Projects:
Clean Energy for Green Industry at UCLA
Category:
Student/Faculty Work
Tags:
nanotubes, Optoelectronics, quantum wells
Type:
faculty research, journal article, interdisciplinary research
Published:
Japanese Journal of Applied Physics 2011
Availability:
Freely Available
Privacy:
Public

Description:

Ultrafast relaxation dynamics of photogenerated carriers in nanostructure based saturable absorber (SA) are investigated using a degenerate cross-polarized pump–probe experiment at 1.55 µm operating wavelength. Single-walled carbon nanotubes (SWNT) encased in micelles are studied and compared to bundled ones as well as to iron doped InGaAs/InP multiple quantum wells (MQW). SA parameters for all optical signal regeneration (AOSR) are extracted from the normalized differential transmission. Although all samples show the same order of recombination time, SWNT in micelles present a much higher contrast ratio associated to a lower level of saturation fluence as compared to their bundled and MQW counterparts.

Posted By:
Mariko Walton
Posted:
May 10, 2012