bottom emitting vertical cavity lasers
Polarization dynamics in vertical-cavity surface emitting lasers
... longitudinal cavity resonance, the HF-mode will be favored, otherwise the ...the cavity resonance shift with quite different rates with temperature (about ...and cavity resonance are ...
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Temperature dependence of spontaneous switch-on and switch-off of laser cavity solitons in vertical-cavity surface-emitting lasers with frequency-selective feedback
... homogeneous system one expects that a self-localized state like a soliton could exist at any location. In the experiment, it is observed that the LCS are appear preferentially at certain locations. These locations depend ...
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Analysis of spatial emission structures in vertical-cavity surface-emitting lasers with feedback from a volume Bragg grating
... external cavity from the self-imaging ...a cavity length in the 100-mm ...external cavity is larger than the perfect telescope length (an imperfect D 2 in ...
8
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 two- fold. ...
15
Controllable spiking patterns in long-wavelength vertical cavity surface emitting lasers for neuromorphic photonics systems
... of freedom in comparison to traditional edge-emitting semiconductor lasers. Furthermore, our approach uses inexpensive devices operating at the important telecom wavelength of 1300 nm and therefore totally ...
15
Controlled propagation of spiking dynamics in vertical-cavity surface-emitting lasers : towards neuromorphic photonic networks
... semiconductor lasers (SLs) have clearly dominated [12,16] given the potentials of these devices for application in information processing [15-22], optical interconnects [23] and communication networks ...
8
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 ...
11
Electrically-controlled neuron-like spiking regimes in vertical-cavity surface-emitting lasers at ultrafast rates
... Abstract—We report experimentally on the electrically- controlled, tunable and repeatable neuron-like spiking regimes generated in an optically-injected vertical-cavity surface-emitting laser (VCSEL) ...
7
Femtosecond synchronously in-well pumped vertical-external-cavity surface-emitting laser
... laser cavity was shortened from +4 µm to 0 µm, the FWHM of the autocorrelation first narrowed from 12 ps to ...Further cavity shortening only resulted in a drop of gain seen by the laser pulse and ...
6
Investigating Scaling Effects on The Static Characteristics of Long-Wavelength Vertical Cavity Lasers (VCSELs)
... The vertical-cavity surface-emitting lasers (VCSELs) was proposed and fabricated in the late ...edge-emitting lasers (EEM), such as low threshold currents and small power ...
5
Research on Photoelectric Characteristics of VCSEL
... many lasers, the Vertical Cavity Surface Emitting Laser (VCSEL) has attracted more attention for its characteristics of easy operation and low power ...
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 threshold, ...
8
Femtosecond synchronously mode-locked vertical-external cavity surface-emitting laser
... center lasers [11, ...increasing cavity length (shown in ...center lasers, where the separation between pulses increases for increasing cavity mismatch [14, ...dye lasers cannot be ...
12
Physical insight into the polarization dynamics of semiconductor vertical-cavity lasers
... semiconductor vertical-cavity surface- emitting lasers ~ VCSELs ! is an interesting subject to ...these lasers to be indifferent to the polarization ...
11
Bistability conditions between lasing and non-lasing states for vertical-cavity surface-emitting lasers with frequency-selective optical feedback
... For the strongest achievable feedback (nominally 7%) and a suitable detuning condition, there is an abrupt switch-on, after some shoulder. The appearance of the shoulder can be interpreted in two ways: First, the ...
13
Characterization of Vertical Cavity Surface Emitting Lasers With Electrical and Optical Derivative Spectroscopy
... Light derivatives show some of the same characteristics as the current derivatives. The dL/dV curve is a measure of how efficient the light output is to the amount of drive voltage. The extreme rise in the red curve ...
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Vertical-Cavity Surface-Emitting Lasers for Ultra-High Speed Photonics
... material refractive index, and f is the slowdown factor of light inside TCC. After each round trip, the laser light is injected into the VCSEL cavity with a coupling ratio η . OFB is treated as the time delay of ...
10
High frequency continuous birefringence-induced oscillations in spin-polarized vertical-cavity surface-emitting lasers
... In summary, we report theoretically and experimentally on birefringence-induced continuous oscillations in a spin-VCSEL. Stability analysis reveals Hopf bifurcations which bound regions of limit cycles yielding ...
5
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
Vertical cavity surface emitting lasers: Design, characterisation and integration
... Specifically the use of optimised DBRs coupled to a graded index separate confinement heterostructure (GRINSCH) cavity is shown to improve the high power characteris[r] ...
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