DocumentCode
1361894
Title
Optoelectronic feedback control for intensity noise suppression in a codoped erbium-ytterbium glass laser
Author
De Geronimo, G. ; Taccheo, S. ; Laporta, P.
Author_Institution
Dipt. di Elettronica e Inf., Politecnico di Milano, Italy
Volume
33
Issue
15
fYear
1997
fDate
7/17/1997 12:00:00 AM
Firstpage
1336
Lastpage
1337
Abstract
An effective optoelectronic feedback circuit for the suppression of relaxation oscillations in a codoped erbium-ytterbium laser is designed and demonstrated. The presence of an additional dominant pole in the forward transfer function, due to the energy transfer process inside the active material requires a feedback control which introduces a suitable phase shift and provides high gain at the relaxation oscillation frequency. A 30 dB reduction in the relaxation oscillation noise peak has been achieved
Keywords
erbium; fibre lasers; laser feedback; laser noise; optical variables control; ytterbium; dominant pole; energy transfer process; fibre lasers; forward transfer function; intensity noise suppression; optoelectronic feedback control; phase shift; relaxation oscillations;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19970896
Filename
606091
Link To Document