In the originally published version of this letter, the “Wavelength” axis on the right side of Fig. 4(b) was rescaled inconsistently with respect to the “Wavenumber” axis on the left side.

The corrected Fig. 4 is shown below. 

FIG. 4.

(a) Spectra of a folded FP cavity QC laser with 50 μm half-ring diameter and 1.14 mm straight ridge length operated in pulsed mode close to threshold and at varying heat sink temperatures. (b) Plot of the emission wavelength (single-mode or double-mode) vs. operating temperature from 80 K to 237 K. The single-mode tuning is continuous over parts of the temperature range. The inset shows the pulsed LIV characteristics at various temperatures.

FIG. 4.

(a) Spectra of a folded FP cavity QC laser with 50 μm half-ring diameter and 1.14 mm straight ridge length operated in pulsed mode close to threshold and at varying heat sink temperatures. (b) Plot of the emission wavelength (single-mode or double-mode) vs. operating temperature from 80 K to 237 K. The single-mode tuning is continuous over parts of the temperature range. The inset shows the pulsed LIV characteristics at various temperatures.

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