Quasi-stadium laser diodes with an unstable resonator condition.
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 sidewall 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.
Fukushima
Takehiro
T
Department of Communication Engineering, Faculty of Computer Science and System Engineering, Okayama Prefectural University, 111 Kuboki, Soja, Okayama 719-1197, Japan. fuku@c.oka-pu.ac.jp
Harayama
Takahisa
T
Davis
Peter
P
Vaccaro
Pablo O
PO
Nishimura
Takehiro
T
Aida
Tahito
T