This dataset contains simulation and experimental data presented in the paper titled 'Continuous frequency tuning with near constant output power in coupled Y-branched terahertz quantum cascade lasers with photonic lattice'

Fig_3a.xlsx contains data from simulation of normalised transmission from individual QCLs with an integrated photonic lattice, and from the coupled Y-branched device. This data corresponds to Fig. 3(a) of the paper.

Fig_3b.xlsx contains data from simulation of a change in refractive index in the coupled Y-branched device due to Stark shift of gain and cavity pulling effect. This data corresponds to Fig. 3(b) of the paper.



Fig_3c.xlsx contains data from simulation of frequency tuning in the coupled Y-branched device  due to change in refractive index arising from Stark shift in gain and cavity pulling effect. This data corresponds to Fig. 3(c) of the paper.


Fig_5.xlsx contains experimentally measured light-current-voltage characterics obtained from the coupled Y-branched device. This data corresponds to Fig. 5 of the paper.


Fig_6a.xlsx contains experimentally recorded and processed spectra at a drive current of 1A and the peak emission frequency at a heat sink temperatures of 10K and 50K, obtained from QCL1 only (QCL2 is unbiased). This data corresponds to Fig. 6(a) of the paper.



Fig_6b.xlsx contains experimentally recorded and processed spectra at different drive currents and at a heat sink temperature of 10K, obtained from QCL2 only (QCL1 is unbiased). Water transmission data accessed from HITRAN online database is also included in a separate worksheet. This data corresponds to Fig. 6(b) of the paper.



Fig_7a.xlsx contains experimentally recorded peak emission frequency from the coupled Y-branched device as a function of drive current amplitudes in QCL1 and QCL2 at a heat sink temperature of 10K. This data corresponds to Fig. 7(a) of the paper.



Fig_7b.xlsx contains experimentally recorded peak output power from the coupled Y-branched device as a function of drive current amplitudes in QCL1 and QCL2 at a heat sink temperature of 10K. This data corresponds to Fig. 7(b) of the paper.



Fig_7c.xlsx contains experimentally recorded peak emission frequency from the coupled Y-branched device as a function of drive current amplitudes in QCL1 and QCL2 at a heat sink temperature of 50K. This data corresponds to Fig. 7(c) of the paper.



Fig_7d.xlsx contains experimentally recorded peak output power from the coupled Y-branched device as a function of drive current amplitudes in QCL1 and QCL2 at a heat sink temperature of 50K. This data corresponds to Fig. 7(d) of the paper.


Fig_8a.xlsx contains experimentally recorded and processed spectra from the coupled Y-branched device. This data corresponds to Fig. 8(a) of the paper.

Fig_8b.xlsx contains SMSR (processed from experimentally recorded spectra) at different emission frequencies. This data corresponds to Fig. 8(b) of the paper.