Анализ внутренних оптических потерь вертикально-излучающего лазера спектрального диапазона 1.55 μm, сформированного методом спекания пластин

Оптика и спектроскопия. 2019. Т. 127. № 7. С. 145–149.

Бобров М. А., Блохин А. А., Кузьменков А. Г., Малеев Н. А., Устинов В. М., Колодезный Е. С., Рочас С. С., Бабичев А. В., Blokhin S., Новиков И. И., Гладышев А. Г., Караченский Л. Я., Денисов Д. В., Воропаев К. О., Ионов А. С., Егоров А. Ю.

The results of a study of internal optical losses and current injection efficiency in vertical-emitting lasers of a spectral range of 1.55 µm obtained by sintering plates of high-q Bragg reflectors and the active region on the basis of thin strained InGaAs/InAlGaAs quantum wells have been presented. It has been shown that the proposed design of the laser provides a record low level of internal optical losses (less than 6.5 cm^–1) and high efficiency of current injection (more than 90%) at room temperature, which allows the realization of submilliampere threshold currents. As the temperature rises to 85°C, the current injection efficiency drops to 70% due to the thermal emission of charge carriers from the active region, accompanied by an increase in internal optical losses to 9.1 cm^–1 because of an increase in absorption on free carriers and/or intersubband absorption in the valence band.

Keywords: квантовая яма, вертикально-излучающий лазер, эпитаксиальная гетероструктура

Publication based on the results of: Optoelectronic devices for optical interconnects and optical on-chip systems based on semiconductor nanomaterials (2020)