Vertical cavity surface emitting lasers
Dynamics importance sampling for the collection of switching events in vertical cavity surface emitting lasers
... A numerical approach based on dynamic importance sampling (DIMS) is applied to in- vestigate polarization switches in vertical-cavity surface-emitting lasers. A polarization switch is ...
7
Controllable spiking patterns in long-wavelength vertical cavity surface emitting lasers for neuromorphic photonics systems
... Amongst SLs, Vertical Cavity Surface Emitting Lasers (VCSELs) offer important advantages compared to in-plane devices, i.e. low costs, ease to integrate in 2D arrays, high coupling ...
15
Spontaneous formation of vector vortex beams in vertical-cavity surface-emitting lasers with feedback
... Hence, considerable effort was spent on creating these unusual polarization states [1], relying on a substantial engineering effort based on specialized equipment as tai- lored laser resonators [18, 19], meta-surfaces ...
6
Polarization dynamics in vertical-cavity surface emitting lasers
... Experiments and their interpretation on polarization dynamics and polarization switching in vertical-cavity surface-emitting lasers operated in the fundamental trans- verse mode regime ...
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Polarization switches in vertical cavity surface emitting lasers
... Vertical Cavity Surface Emitting Lasers (VCSEL) are a novel class of semiconductor lasers which are having great success in many applications requiring high speed, precision and ...
9
Electrically-controlled neuron-like spiking regimes in vertical-cavity surface-emitting lasers at ultrafast rates
... fibre lasers [10,11], semiconductor optical amplifiers (SOAs) [12,13], optical modulators [14,15] and semiconductor lasers (SLs) ...micro-disk lasers [16], micro-pillar lasers [17-19] and ...
7
Controlled propagation of spiking dynamics in vertical-cavity surface-emitting lasers : towards neuromorphic photonic networks
... Abstract—We report experimentally and in theory on the controllable propagation of spiking regimes between two interlinked Vertical-Cavity Surface-Emitting Lasers (VCSELs). We show that ...
8
Analysis of spatial emission structures in vertical-cavity surface-emitting lasers with feedback from a volume Bragg grating
... for vertical-cavity surface-emitting lasers (VCSELs), both for medium-sized devices emitting Gaussian modes [4,5] and for broad-area devices emitting Fourier modes ...
8
High frequency continuous birefringence-induced oscillations in spin-polarized vertical-cavity surface-emitting lasers
... of vertical-cavity surface-emitting lasers (VCSELs) contain two dominant frequencies, namely (1) the relaxation os- cillation frequency which is related to the geometric mean of the ...
5
Temperature dependence of spontaneous switch-on and switch-off of laser cavity solitons in vertical-cavity surface-emitting lasers with frequency-selective feedback
... laser cavity solitons in broad-area vertical-cavity surface-emitting lasers with frequency-selective feedback by a volume Bragg grating is ...the cavity length causes a ...
19
Polarization properties in the transition from below to above lasing threshold in broad-area vertical-cavity surface-emitting lasers
... the polarization direction for off-axis light is different below and above threshold but there is no detailed investigation. In this work, we characterize the polarization properties of off- axis below-threshold emission ...
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Bistability conditions between lasing and non-lasing states for vertical-cavity surface-emitting lasers with frequency-selective optical feedback
... feedback strength, the LI-curves show a small pedestal before the abrupt turn-on (Figure 6a). The pedestal is the remnant of high-amplitude oscillations after time averaging. The pump current corresponding to the abrupt ...
13
Vertical-Cavity Surface-Emitting Lasers for Ultra-High Speed Photonics
... a vertical‐cavity surface‐emitting laser (VCSEL) with a transverse‐coupled‐ cavity (TCC) for a larger enhancement of the modulation bandwidth used in ultra‐high‐ speed ...feedback ...
10
Vertical cavity surface emitting lasers: Design, characterisation and integration
... The abive figure (4.2a) clearly shows the effect of the increased confinement factor in the PGS case (cavity c), demonstrated by an approximately three fold decrease in threshold gain (per QW) in going from a IQW ...
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Vector cavity solitons in broad area Vertical-Cavity Surface-Emitting lasers
... vector cavity solitons in a Vertical-Cavity Surface-Emitting Laser (VCSEL) under linearly polarized optical injection when varying optical injection linear polarization ...the ...
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Characterization of Vertical Cavity Surface Emitting Lasers With Electrical and Optical Derivative Spectroscopy
... laser cavity was formed by cleaved or polished semiconductor surfaces providing the optical feedback, and the p-n junction was forward biased for external ...edge emitting stripe geometry laser 16 become ...
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Polarization fluctuations in vertical-cavity semiconductor lasers
... Polarization fluctuations are present in all lasers, but are exceptionally strong in semiconductor vertical-cavity surface-emitting lasers ~ VCSELs ! . The reason for this is ...
15
Structural Analysis of InGaAs Based Vertical Cavity Surface-Emitting Quantum Well Laser
... long-wavelength vertical- cavity surface-emitting lasers (LW-VCSELs) in order to realize reduced optical loss, as well as increasing current and optical ...
6
Spin induced gigahertz polarization oscillations in vertical-cavity surface-emitting laser devices
... Spin-controlled vertical-cavity surface-emitting lasers (VCSELs) have been intensively studied in recent years because of the low threshold feasibility and the nonlinearity above ...
8
Supermode Si/III–V lasers and circular Bragg lasers
... Surface-emitting lasers have been attracting people’s interest over the past two decades because of their salient features such as low threshold current, single-mode operation, and wafer-scale ...
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