Title :
Very sensitive two-photon absorption GaAs/AlGaAs waveguide detector for an autocorrelator
Author :
Laughton, F.R. ; Marsh, John H. ; Kean, A.H.
Author_Institution :
Glasgow Univ., UK
Abstract :
Two-photon-induced conductivity (TPC) in a reverse-biased p-i-n GaAs/AlGaAs optical waveguide is observed, and the intensity-dependence of the photocurrent characterised. When this waveguide was used as the nonlinear detection element of an autocorrelator, an autocorrelation trace of a CW mode-locked Nd3+:YAG laser at 1.06 mu m was successfully obtained.
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; laser variables measurement; nonlinear optics; optical correlation; optical waveguide components; photodetectors; sensitivity; two-photon processes; GaAs-AlGaAs optical waveguide; autocorrelator; mode-locked laser pulses; nonlinear detection element; photocurrent; reverse-biased p-i-n waveguide; two-photon-induced conductivity; waveguide detector;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921058
