Quasi-stadium laser diodes with an unstable resonator condition

Takehiro Fukushima*, Takahisa Harayama, Peter Davis, Pablo O. Vaccaro, Takehiro Nishimura, Tahito Aida

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We have observed lasing in a complicated eigenmode of a quasi-stadium laser diode with an unstable resonator consisting of two curved end mirrors obeying an unstable resonator condition and two straight side-wall mirrors. The laser was fabricated by application of a reactive-ion-etching technique to a molecular beam epitaxy - grown graded-index separate-confinement heterostructure single-quantum-well GaAs/AlGaAs structure. The far-field pattern shows that the lasing mode corresponds to the complicated lowest-loss mode obtained numerically by an extended Fox - Li method.

Original languageEnglish
Pages (from-to)408-410
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 2003 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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