Integrated wavelength stabilization of in-plane semiconductor lasers by use of a dual-grating reflector

Abstract

We summarize a novel integrated wavelength-stabilization scheme for broad stripe surface-emitting lasers. The method is based on two gratings fabricated on opposite sides of a device in which the first grating disperses light through the substrate to the opposite side, where the second surface has a feedback grating that operates under total internal reflection and in the Littrow condition to provide feedback into the gain medium. Experimental results have been obtained for both high power and a narrow linewidth, showing a CW slope of 0.85 W/A.

Compact High Peak Power MOPA Assembly based on Grating Coupled Laser Diodes

“…For the MO, we used a laser diode with single wavelength emission provided by an integrated dual grating reflector (DGR). The DGR consists of a grating coupler on the p-side combined with an n-side feedback grating operating in the Total Internal Reflection Littrow condition [6]. Coupling between the MO and the PA, is provided by identical grating couplers integrated on both the devices which are stacked in the vertical direction.…”

Master oscillator power amplifier 3D assemblies based on grating coupled laser diodes

“…Such low reflectivity minimizes the feedback from the amplifier facets that is critical for MOPA application. For the MO, we used a laser diode with single wavelength emission provided by an integrated dual grating reflector (DGR) 7 . The DGR consists of a grating coupler on the p-side combined with a n-side feedback grating operating in the Littrow condition.…”

All-dielectric unidirectional dual-grating output coupler

“…In recent years, the concept of dual-side wafer processing for semiconductor waveguides has been introduced. By integrating a superstrate-side diffraction grating with either a substrate side refractive or diffractive element, numerous applications in spatial and spectral beam control have been introduced [5,7,8]. In this work, we present a novel all-dielectric unidirectional grating coupler that avoids the need for any additional material deposition.…”