1.
Appl Opt
; 33(6): 1059-62, 1994 Feb 20.
Artigo
em Inglês
| MEDLINE
| ID: mdl-20862116
RESUMO
A novel technique to measure changes in optical transmission of better than 10(-3) with time resolution of better than 10 ns is discussed. The photocurrent from two photodiodes is subtracted with a balanced detection circuit to eliminate the common signal; carrier-induced change in absorption for a semiconductor single quantum well produces a large differential signal.