Optical fiber spatial filtering technique for investigating carrier dynamics

Tai, K.; McCall, S. L.; Tsang, W. T.
August 1988
Applied Physics Letters;8/29/1988, Vol. 53 Issue 9, p737
Academic Journal
A new technique using single-mode fibers as spatial filters for probing carrier dynamics such as diffusion and recombination is introduced. Diffusion coefficients of 5.5 and 5 cm2/s are obtained for optically excited electron-hole plasmas in a 1.9-μm-thick In0.6Ga0.4As0.85P0.15 bulk layer and in an In0.53Ga0.47As/InP quantum well sample with well thickness of 100 Å, respectively.


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