Generation of subpicosecond coherent optical pulses by passive mode locking of an AlGaAs diode laser

Hiroyuki Yokoyama, Hiromasa Ito, Humio Inaba

Research output: Contribution to journalArticle

61 Citations (Scopus)

Abstract

Subpicosecond coherent optical pulses as short as 0.58 ps were generated for the first time by passive mode locking of an AlGaAs double heterostructure diode laser. It was realized by a simple configuration made of a conventional AlGaAs diode laser without antireflection coatings on both facets, which was aged and exhibiting self-pulsation, placed in an external cavity. When the external cavity length was shorter than about 60 mm, almost complete mode locking was observed over the oscillation spectrum of 3.5 nm in width. Based on the second-harmonic generation autocorrelation measurement, ultrashort coherent optical pulses from 0.58 to 1.2 ps in duration were demonstrated by increasing the external cavity length together with the proper control of the optical feedback effect and the pumping dc current.

Original languageEnglish
Pages (from-to)105-107
Number of pages3
JournalApplied Physics Letters
Volume40
Issue number2
DOIs
Publication statusPublished - 1982 Dec 1

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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