BALANCED DETECTION TECHNIQUE TO MEASURE SMALL CHANGES IN TRANSMISSION

Authors
HOUSER GD GARMIRE E
Citation
Gd. Houser et E. Garmire, BALANCED DETECTION TECHNIQUE TO MEASURE SMALL CHANGES IN TRANSMISSION, Applied optics, 33(6), 1994, pp. 1059-1062
Citations number
5
Categorie Soggetti
Optics
Journal title
Applied optics → ACNP
ISSN journal
00036935
Volume
33
Issue
6
Year of publication
1994
Pages
1059 - 1062
Database
ISI
SICI code
0003-6935(1994)33:6<1059:BDTTMS>2.0.ZU;2-7
Abstract
A novel technique to measure changes in optical transmission of better than 10(-3) with time resolution of better than 10 ns is discussed. T he photocurrent from two photodiodes is subtracted with a balanced det ection circuit to eliminate the common signal; carrier-induced change in absorption for a semiconductor single quantum well produces a large differential signal.