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Proceedings Paper

Laser diode in a coherent resolved interferometer
Author(s): Dongsong Sun; Shigang Liu; Yuan Zhao; Lijie Qiao
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Paper Abstract

A short coherence length of a laser diode (LD) is required in coherent resolved interferometers. The coherence length of a LD can be reduced by modulating the source with a high frequency signal, which is superposed on the driving current for the LD. A 980nm laser diode in this paper is modulated with a frequency 40MHz and modulation depth 0.5, where its coherence length is compressed 20 times. The first side-band peak in the coherence function is reduced by 10dB, but it is hard to suppress them completely.

Paper Details

Date Published: 24 September 1996
PDF: 6 pages
Proc. SPIE 2886, Semiconductor Lasers II, (24 September 1996); doi: 10.1117/12.251911
Show Author Affiliations
Dongsong Sun, Harbin Institute of Technology (China)
Shigang Liu, Harbin Institute of Technology (China)
Yuan Zhao, Harbin Institute of Technology (China)
Lijie Qiao, Harbin Institute of Technology (China)

Published in SPIE Proceedings Vol. 2886:
Semiconductor Lasers II
Siamak Forouhar; Qiming Wang, Editor(s)

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