Separation of inhomogeneous and homogeneous broadening manifestations in InGaAs/GaAs quantum wells by time-resolved four-wave mixing

Четырехволновое взаимодействие на фазово-амплитудных голографических решетках в фоторефрактивном пьезокристалле класса симметрии 43m

“…Полученные результаты демонстрируют, что кристаллы Ga/AlGaAs могут являться эффективным источником нелинейного оптического взаимодействия в лазерах. В настоящее время четырехволновое взаимодействие применяется для изучения и совершенствования полупроводниковых лазеров на квантовых точках (см., напр., [10][11][12]).…”

Long-living dark coherence brought to light by magnetic-field controlled photon echo

“…The optical coherence could be addressed and stored in ensembles of resonant systems by the photon echo (PE) protocol, in the simplest cases realized by two (spontaneous PE) or three (stimulated PE) successive laser pulses exciting the ensemble [5][6][7][8]. An important step towards applications utilizing such coherence manipulation in the ultrafast way was the observation of PE from ensembles of excitons and their complexes in epitaxial heterostructures based on GaAs [9][10][11], CdTe [12][13][14][15], and wide-band gap ZnO [16,17] and GaN [18] semiconductors. PE is also actively studied in novel excitonic materials: transition metal dichalcogenide (TMDC) monolayers [19,20], and halide perovskites [21][22][23][24].…”

“…Full width at half maximum of the laser pulse spectra was around 1 meV, which makes possible to resonantly excite the excitonic transition without involving other exciton complexes. More details on the experimental technique could be found in [9,25].…”