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We report on recent progress in the generation of non-diffracting (Bessel) beams from semiconductor light sources including both edge-emitting and surface-emitting semiconductor lasers as well as light-emitting diodes (LEDs). Bessel beams at the power level of Watts with central lobe diameters of a few to tens of micrometers were achieved from compact and highly efficient lasers. The practicality...
Semiconductor quantum dot lasers are attractive for multiple technological applications in biophotonics. Simultaneous two-state lasing of ground state (GS) and excited state (ES) electrons and holes in QD lasers is possible under a certain parameter range. It has already been investigated in steady-state operations and in dynamical regimes and is currently a subject of the intesive research.
In this paper, we demonstrate, for the first time to the best of our knowledge, utilization of Bessel beams generated from a semiconductor laser for optical trapping and manipulation of microscopic particles including living cells.
Recent progress in the technology of vertical-cavity surface-emitting lasers (VCSELs) has made possible wide use of these lasers in fiber-optical communication systems, optical input/output devices, transducers and sensors. However, further optimization of VCSEL parameters including increase of lasing efficiency and improvement of dynamic characteristics is demanded by most of the applications mentioned...
In this report, we present experimental study of spectrally-resolved dynamics of InGaAs/GaAs/AlGaAs QW laser diodes emitting through multiple electron and hole quantum levels. 4 mm-long lasers with 7 mum stripes were pumped with short 150 ns electrical pulses with low 16 kHz repetition rate in order to avoid overheating. This has allowed to apply pumping current amplitudes up to 10 A, to the level...
This paper reports self-sustained pulsation and electrical-to-optical signal peaking in vertical-cavity surface-emitting lasers (VCSEL) having a sub-monolayer (SML) InGaAs quantum-dot (QD) active region and tapered oxide aperture.
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