Abstract
We report the development of widely tunable lasers monolithically integrated with aninternal photodiode separated from the active laser segments by one-dimensional photoniccrystals (PhCs). The devices cover a large total wavelength span of 42 nm in single modeemission and are tunable in wavelength steps below 1 nm whereby the outputpower can simultaneously be controlled via the internal photodiode. Discretewavelength tuning is obtained by small changes of the injection current using atwo-coupled Fabry–Perot resonators configuration. The devices with single modewavelength tunability and simultaneous power control on one single chip appearto be key enablers for future lab-on-a-chip applications in tunable diode laserspectroscopy.
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