Abstract

Monolithically integrated flared amplifier master oscillator power amplifier (MFA-MOPA) lasers are studied using a high-resolution computational model that resolves time as well as longitudinal and transverse space dependences and includes Lorentzian gain and dispersion dynamics. By altering the linear flare of the power amplifier into a nonlinear, trumpet-shaped flare to overlap the gain region to the expanding field, the instability threshold of the MOPA is increased by ∼2 for single-longitudinal, single-transverse mode operation and ∼3 for single-transverse mode operation. This enables the MOPA to maintain a stable, near-diffraction limited output beam for higher currents before the onset of transverse instabilities. Thus the trumpet-flared MOPA emits an output beam of significantly higher power and brightness. This increased stability is due to a large reduction in feedback from the output facet of the trumpet shaped MFA-MOPA.

Original languageEnglish (US)
Pages (from-to)1220-1222
Number of pages3
JournalIEEE Photonics Technology Letters
Volume9
Issue number9
DOIs
StatePublished - Sep 1997

Fingerprint

power amplifiers
Power amplifiers
flares
Semiconductor lasers
amplifiers
semiconductor lasers
oscillators
output
high current
flat surfaces
Luminance
brightness
Diffraction
Feedback
thresholds
Lasers
high resolution
diffraction
lasers
lysophosphatidic acid

Keywords

  • Distributed Bragg reflector lasers
  • Nonlinear wave propagation
  • Optical propagation in nonlinear media
  • Semiconductor lasers
  • Semiconductor optical amplifiers

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

Cite this

Enhanced stability of MFA-MOPA semiconductor lasers using a nonlinear, trumpet-shaped flare. / Skovgaard, P. M W; McInerney, J. G.; Moloney, J. V.; Indik, R. A.; Ning, Cun-Zheng.

In: IEEE Photonics Technology Letters, Vol. 9, No. 9, 09.1997, p. 1220-1222.

Research output: Contribution to journalArticle

Skovgaard, P. M W ; McInerney, J. G. ; Moloney, J. V. ; Indik, R. A. ; Ning, Cun-Zheng. / Enhanced stability of MFA-MOPA semiconductor lasers using a nonlinear, trumpet-shaped flare. In: IEEE Photonics Technology Letters. 1997 ; Vol. 9, No. 9. pp. 1220-1222.
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