Abstract

We obtained high-quality lowest-loss-mode lasing in quasi-stadium laser diodes having unstable resonators that consisted of two curved end mirrors and two straight sidewall mirrors. The laser diodes were fabricated by applying a reactive ion etching technique to a metal-organic chemical-vapor deposition–grown graded-index separate-confinement heterostructure single-quantum-well $\mathrm{Ga}\mathrm{As}∕\mathrm{Al}\mathrm{Ga}\mathrm{As}$ structure. The electrode contact area of the laser diodes was formed along unstable periodic orbits, along which the optical beams are localized. Highly directional fan-out beams corresponding to the numerically obtained lowest loss mode were emitted from the end mirrors under CW operation at room temperature.

© 2007 Optical Society of America

Quasi-stadium laser diodes with an unstable resonator condition

Takehiro Fukushima, Takahisa Harayama, Peter Davis, Pablo O. Vaccaro, Takehiro Nishimura, and Tahito Aida
Opt. Lett. 28(6) 408-410 (2003)

Lowest-order axial and ring mode lasing in confocal quasi-stadium laser diodes

Takehiro Fukushima, Satoshi Sunada, Takahisa Harayama, Koichiro Sakaguchi, and Yasunori Tokuda
Appl. Opt. 51(14) 2515-2520 (2012)

Ring and axis mode lasing in quasi-stadium laser diodes with concentric end mirrors

Takehiro Fukushima, Takahisa Harayama, Peter Davis, Pablo O. Vaccaro, Takehiro Nishimura, and Tahito Aida
Opt. Lett. 27(16) 1430-1432 (2002)

Selective excitation of lowest-order transverse ring modes in a quasi-stadium laser diode

Takehiro Fukushima, Susumu Shinohara, Satoshi Sunada, Takahisa Harayama, Kenichi Arai, Koichiro Sakaguchi, and Yasunori Tokuda
Opt. Lett. 38(20) 4158-4161 (2013)

Morphological dependence of lasing modes in two-dimensional quasi-stadium laser diodes

Takehiro Fukushima, Takahisa Harayama, Tomohiro Miyasaka, and Pablo O. Vaccaro
J. Opt. Soc. Am. B 21(5) 935-943 (2004)