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Cathodoluminescence study of orientation patterned GaAs films for non linear optics

Published online by Cambridge University Press:  01 February 2011

Manuel Avella ,
Juan Jiménez ,
David Bliss ,
Candance Lynch  and
David Weyburne
Manuel Avella
Affiliation:
[email protected], Universidad de Valladolid, Física Materia Condensada, Spain
Juan Jiménez
Affiliation:
[email protected], Universidad de Valladolid, Física Materia Condensada, ETSII, Paseo del cauce s/n, Valladolid, N/A, 47011, Spain, 34983423191, 34983423192
David Bliss
Affiliation:
[email protected], AFRL Hanscom, United States
Candance Lynch
Affiliation:
[email protected], AFRL Hanscom, United States
David Weyburne
Affiliation:
[email protected], AFRL Hanscom, United States
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Abstract

Zincblende semiconductor materials such as GaAs and ZnSe are very promising for the generation of tunable IR signals by quasi phase-matched nonlinear optical frequency conversion. Orientation patterned GaAs crystals (OP-GaAs) were grown by low-pressure hydride vapor phase epitaxy (HVPE) on lithographically prepared templates.. Cathodoluminescence (CL) imaging was used to study these epitaxial films, which consist of periodic domains of inverted crystallographic orientation. The challenge is to achieve thick, vertical domains and to minimize sources of optical loss. Both the domain walls and crystal defects may contribute to transmission losses, therefore, a characterization of both is necessary to improve the OP-GaAs crystal performance. The stress and non radiative recombination activity of the domain walls were investigated. The presence of dislocation glide was revealed and CL spectral imaging was used to observe the stress distribution around both the domain walls and the dislocations.

Keywords

III-Vluminescenceoptical properties
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 891: Symposium EE – Progress in Semiconductor Materials V – Novel Materials and Electronics and Optoelectronic Applications , 2005 , 0891-EE03-20
Copyright
Copyright © Materials Research Society 2006

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References

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