Document Detail


AlxGa1-xAs nested waveguide heterostructures for continuously phase-matched terahertz difference frequency generation.
MedLine Citation:
PMID:  20174063     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
We previously demonstrated a nested pair of single mode (pump/THz) waveguides which produced guided far-infrared (1.3 THz) light with a record power-normalized conversion efficiency of 1.3x10(-7) W(-1) by way of continuous phase matched difference frequency generation (DFG) [Opt. Express 16, 13296 (2008)]. Using the same numerical simulation tools we used to design and model this LiNbO(3)-based device, we show that a lattice-matched AlGaAs heterostructure, with its significantly lower absorption losses, can produce guided far-infrared light (3.5 THz) with a power-normalized conversion efficiency of 1.3 x 10(-5) W(-1) - some 100 times larger than achieved with the LiNbO(3) structure.
Authors:
C M Staus; T F Kuech; L McCaughan
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Optics express     Volume:  18     ISSN:  1094-4087     ISO Abbreviation:  Opt Express     Publication Date:  2010 Feb 
Date Detail:
Created Date:  2010-02-22     Completed Date:  2010-06-08     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137103     Medline TA:  Opt Express     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2332-8     Citation Subset:  -    
Affiliation:
Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, WI 53706, USA.
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