Directional emission InP/GaInAsP square-resonator microlasers

InP/GaInAsP square-resonator microlasers with an output waveguide connected to the midpoint of one side of the square are fabricated by standard photolithography and inductively-coupled-plasma etching technique. For a 20-mum-side square microlaser with a 2-mum-wide output waveguide, cw threshold cur...

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Veröffentlicht in:	Optics letters 2008-10, Vol.33 (19), p.2170-2172
Hauptverfasser:	HUANG, Yong-Zhen, CHE, Kai-Jun, YANG, Yue-De, WANG, Shi-Jiang, YUN DU, FAN, Zhong-Chao
Format:	Artikel
Sprache:	eng
Schlagworte:	Exact sciences and technology Fundamental areas of phenomenology (including applications) Laser optical systems: design and operation Lasers Microcavity and microdisk lasers Optics Physics Resonators, cavities, amplifiers, arrays, and rings Semiconductor lasers laser diodes
Online-Zugang:	Volltext
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Beschreibung
Zusammenfassung:	InP/GaInAsP square-resonator microlasers with an output waveguide connected to the midpoint of one side of the square are fabricated by standard photolithography and inductively-coupled-plasma etching technique. For a 20-mum-side square microlaser with a 2-mum-wide output waveguide, cw threshold current is 11 mA at room temperature, and the highest mode Q factor is 1.0x10(4) measured from the mode linewidth at the injection current of 10 mA. Multimode oscillation is observed with the lasing mode wavelength 1546 nm and the side-mode suppression ratio of 20 dB at the injection current of 15 mA.
ISSN:	0146-9592 1539-4794
DOI:	10.1364/OL.33.002170