Abstract
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 -side square microlaser with a -wide output waveguide, cw threshold current is at room temperature, and the highest mode Q factor is measured from the mode linewidth at the injection current of . Multimode oscillation is observed with the lasing mode wavelength and the side-mode suppression ratio of at the injection current of .
© 2008 Optical Society of America
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