Two- and one-dimensional light propagations and gain in layer-by-layer-deposited colloidal nanocrystal waveguides
Roither, J., Pichler, S., Kovalenko, M. V., Heiss, W., Feychuk, P., Panchuk, O., Allam, J. and Murdin, B. N. (2006) Two- and one-dimensional light propagations and gain in layer-by-layer-deposited colloidal nanocrystal waveguides Applied Physics Letters, 111120 (2006).
Optical waveguides containing high percentages of colloidal nanocrystals have been fabricated by layer-by-layer deposition on planar and patterned glass substrates. The two- and one-dimensional waveguidings in these structures are demonstrated by propagation loss experiments. The experimental results obtained for various film thicknesses and widths of the waveguide stripes together with simulations of the light propagation indicate that the losses are dominated by surface roughness. The variable stripe length method is used to determine the optical gain of 230 cm–1 from the amplified spontaneous emission. This high value makes the authors' waveguide structures very promising for applications in amplifiers and lasers with reduced threshold powers.
|Divisions :||Faculty of Engineering and Physical Sciences > Electronic Engineering > Advanced Technology Institute > Photonics
Faculty of Engineering and Physical Sciences > Physics
|Date :||11 September 2006|
|Identification Number :||10.1063/1.2354433|
|Additional Information :||J. Roither et al., Appl. Phys. Lett. 89, 111120 (2006). Copyright (2006) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.|
|Depositing User :||Mr Adam Field|
|Date Deposited :||27 May 2010 14:44|
|Last Modified :||23 Sep 2013 18:35|
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