Figure 5
From: Monolithic beam steering in a mid-infrared, surface-emitting, photonic integrated circuit
Tuning and steering behaviour for SGDFB lasers with tapered grating outcouplers. (a) Steering angle and relative current density in the SGDFB sections as a function of emission wavelength. (b) A collection of far-field scans along the theta axis (ϕ = 0) for different input wavelengths. (c) A two dimensional far-field scan of the tapered grating output beam at λ = 4.83 μm. (d) Comparison of experimental and calculated grating output angles for different input wavelengths and grating periods. Experimental data (symbols) and fit with solid lines following the formula given. Closed symbols = linear gratings. Open symbols = tapered gratings.
