Passive mode-locking in semiconductor lasers with saturable absorbers bandgap shifted through quantum well intermixing

Vincenzo Pusino, Michael J. Strain, Marc Sorel

Research output: Contribution to journalArticle

3 Citations (Scopus)
49 Downloads (Pure)

Abstract

Passive mode-locking in semiconductor lasers in a Fabry-Perot configuration with a bandgap blueshift applied to the saturable absorber (SA) section has been experimentally characterized. For the first time a fully post-growth technique, quantum well intermixing, was adopted to modify the material bandgap in the SA section. The measurements showed not only an expected narrowing of the pulse width but also a significant expansion of the range of bias conditions generating a stable train of optical pulses. Moreover, the pulses from lasers with bandgap shifted absorbers presented reduced chirp and increased peak power with respect to the nonshifted case.

Original languageEnglish
Pages (from-to)186-189
Number of pages4
JournalPhotonics Research
Volume2
Issue number6
DOIs
Publication statusPublished - 1 Dec 2014

Fingerprint

Passive mode locking
Saturable absorbers
Semiconductor quantum wells
locking
Semiconductor lasers
absorbers
Energy gap
semiconductor lasers
quantum wells
Laser pulses
chirp
pulses
pulse duration
expansion
Lasers
configurations
lasers

Keywords

  • integrated optics devices
  • mode-locked lasers
  • semiconductor lasers

Cite this

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Passive mode-locking in semiconductor lasers with saturable absorbers bandgap shifted through quantum well intermixing. / Pusino, Vincenzo; Strain, Michael J.; Sorel, Marc.

In: Photonics Research, Vol. 2, No. 6, 01.12.2014, p. 186-189.

Research output: Contribution to journalArticle

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