AgInSe2 Nanorods: A semiconducting material for saturable absorber

Autor:	Elim, Hendry I., Ji, W., Ng, M. T., Vittal, J. J.
Rok vydání:	2007
Předmět:	Nonlinear Sciences - Exactly Solvable and Integrable Systems Condensed Matter - Materials Science Condensed Matter - Soft Condensed Matter Physics - Chemical Physics Physics - Optics
Zdroj:	Appl. Phys. Lett. 90, 033106 (2007)
Druh dokumentu:	Working Paper
DOI:	10.1063/1.2429030
Popis:	AgInSe2 nanorods (NRs) with diameter of 15 nm have been investigated for their nonlinear optical responses by using Z-scan and transient absorption techniques with femtosecond laser pulses of photon energy greater than the bandgap. At excitation irradiance of 20 GW/cm2, AgInSe2 NRs reveal saturation in the nonlinear absorption and optical Kerr nonlinearity with a recovery time determined to be a few ten picoseconds. Such large saturable absorption and Kerr nonlinearity exhibit a third-order susceptibility of 1.2 x 10-8 esu and a figure of merit of 0.04 esu.cm.s-1, making AgInSe2 NRs a promising candidate for saturable absorption devices. Comment: 16 pages, 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0710.5573 Zobrazit plný text záznamu View this record from Arxiv