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Hybrid plasmonic lasers in nanowires of small size have been intensively studied in the past few years. However, there is a condition, which is that the size of the nanowire should be small enough (diameter ∼ 100 nm) to suppress the lasing of the photonic modes. Because the photonic modes suffer less loss, leading to lower threshold. Thus for large-size nanowires, it is hard to achieve the lasing...
Stimulated by the non-Hermitian nature of micro- and nanophotonic systems, modal interaction has been proposed to play a more essential role in controlling lasing actions. Here we demonstrate its impact on mode management in microcavity lasers. Single-mode laser emission with extinction ratio above 10 dB has been obtained in twin-microdisks with a radius about 40 µm. Unlike conventional single-mode...
The feasibility for generating bandwidth-limited, single-longitudinal-mode, ultrashort optical pulses has been demonstrated for the first time using a DBR diode laser at 1.3 μm by the method of strong RF modulation superimposed on the DC bias current. The time-bandwidth product of generated picosecond pulses at 400 MHz modulation frequency was measured to be 0.45 for the Lorentzian pulse shape with...
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